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Article type: Cover
Pages
Cover1-
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Article type: Index
Pages
A1-A50
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Hirokazu SATO
Article type: Article
Session ID: A-1
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In order to get accurate information of the present circumstances in water supply in large-scale buildings, we examined the amount used for drinking water, the storage capacity of water tank, the amount of miscellaneous water used, etc., investigating the correlations of these data. It becomes evident that the amount of drinking water and miscellaneous water actually used in buildings was different from the assumption when the water supply equipments were designed.
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Kaori KANAI, Yoshiaki MATSUMURA, Hitoshi AKAI, Susumu TAKACHI, Mitsuya ...
Article type: Article
Session ID: A-2
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This report is the water consumption investigation at municipal elementary schools and junior high schools in B city in Kanto area. B city has 46 elementary schools and 21 junior high schools which all are provided outside lunch. The quantities of water are divided into those including the consumption of swimming pool and not. This report calculated average of and maximum and minimum of monthly water consumption.
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Yoshiaki MATSUMURA, Kaori KANAI, Hitoshi AKAI, Susumu TAKACHI, Mitsuya ...
Article type: Article
Session ID: A-3
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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It is the water consumption investigation at elementary schools and junior high schools in a cities, towns, and villages of 100,000 people or less. Mr. Matsumura report the interrelation between total floor space and water consumption based on the researched quantities of water per person and per unit of area The quantities of water are divided into those including the consumption of swimming pool and not, including the consumption of school lunch and not.
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Shinji Kosaka, Satoru Yanagimura
Article type: Article
Session ID: A-4
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In water supply and a hot-water supply system, tanks and pumps are selected with the hourly maximum water load. The hourly water load factors will be changed in the scale of a building. The water load may be calculated too little or too large, if the scale of a building is not considered. The hourly load pattern in consideration of a building scale for the hourly maximum water load calculation was examined
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Takahiro OMOTO, Toshihisa MATSUSHIMA, Masashi YASUOKA
Article type: Article
Session ID: A-5
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In late years a construction rush of a super high-rise building continues around Tokyo urban region. As a technology of building was improved, numbers of floors increased steadily. Now it is the time when a super high-rise building which are more than 100th floor appeared abroad. A use of buildings spreads like multifamily housing, office, commercial institution and compound building. The types of human being living in that, and jobs are various, and a super high-rise building has in total various characteristics in it. Supply of stable life water for such a super high-rise building is the indispensable problem that it is necessary. Therefore I report the middle progress here because I am aimed for confirmation of grasp of "quantity of reasonable water supply" and flattery characteristics of water supply pressure and measure actual survey of use quantity of water in a few super high-rise building of a report example and the driving situation of a feed pump particularly and examined a result.
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Takatoshi MIZUTANI, Noriyoshi ICHIKAWA, Fumitoshi KIYA
Article type: Article
Session ID: A-6
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper reports on investigation of the current state on Direct Booster Water Supply(DBWS) System. The DBWS system is a method to connect a booster pump to the water service pipe diverged from water distibution pipe. This system was introduced for middle scale building in Japan about 10 years ago. However, there are a lot of problems after introduction. Then, the current state and the problems were understood, and the questionnaire survey of the breakdown of the device of increasing pressure etc. was done for the pump manufacturers.
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Ken MAEJIMA, Fumitoshi KIYA, Satoru YANAGIMURA, Xinagwu WANG, Takeshi ...
Article type: Article
Session ID: A-7
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Air gaps in open tanks with horizontal overflow pipes shall be measured from the bottom of overflow pipe by SHASE-S 206-2000, and from the highest possible water level by ASME A112.1.2-1991. When ASME standard is applied, it is necessary to determine the height of the highest possible water level. The determination of this height is not published. This paper is to publish the heights obtained by the experimentation using flush tanks for water closets and a small transparent plastic tank. The heights of water rise are expressed in exponential functions of incoming flow rates and overflow pipe internal diameters. The highest possible water levels are obtained only when siphonage occurred.
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Xinagwu WANG, Satoru YANAGIMURA, Chisao YONEDA, Ken MAEJIMA, Fumitoshi ...
Article type: Article
Session ID: A-8
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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When examine the standard of the air-gap in open tanks with horizontal overflow pipes, it is necessary to determine the height of the highest water level in the tanks. Because the determination of this height has never been published, the experiment study was carried out for the purpose to obtain it. This paper reports the experiment results concerning the medium size FRP water tank with the overflow pipes of inside diameters 50mm and 100mm. As a result, proposes the empirical formulae of the heights by incoming flow rates and inside diameters, and the maximum flow rates of the overflow pipes also are shown.
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Hiroyuki KOSE
Article type: Article
Session ID: A-9
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The necessity of utilizing the rainwater effectively as water source of one own expense heightens, when they worry about fresh water materials shortages of the world. In the rainwater utilization, it is necessary to also examine the water quality with the demand and supply balance of rainwater. Then, the result of simulation on quantity of water balance and residence time of rain water at rain water filtration and reservation system in use of single-family house, while the outline of "Center for Regional Industrial Symbiosis Research, Toyo University (CRIS)" which the practical research project realizes the circulation society and society system, is reported in this study. In assumed house, the calculation was carried out by two cases in supplying the rainwater in case only the toilet and toilet and washing application. And, the evaluation index for 1 year variously was obtained in the case in which the rainwater filtration rate is made to change at 0.0-1.0 and the rainwater storage tank is made to change in 1.0-10.0 cubic meter. As the result, the effectiveness of attempting the rainwater utilization, while it makes the rainwater filtration a basis, could be confirmed. In the future, it is necessary that it carries out the simulation in each utilization condition and each place, while measured data are collected by the field experiment, and evaluates the effectiveness of rainwater utilization system many-sided.
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Yasuo KOSHIKAWA, Saburo MURAKAWA, Yasuo TAKATSU, Yuri NAKAGAWA, Toshiy ...
Article type: Article
Session ID: A-10
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The purpose of this study is to establish the calculation method of the waiting time in railway station toilet with using the latest measurement data. As the first stage, users' behavior research in the toilets including the dressing table was carried out in the 5 JR stations. Comparing with the setup values of the existing method, the rise in the usage rate of the male washbowl was shown. And, fixture usage pattern in the toilets was cleared.
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Hiroyuki OHMORI, Goro SEKI, Kazumasa OHASHI, Syuichi NIHIRA, Kenji HOR ...
Article type: Article
Session ID: A-11
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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We did investigation and analysis of the use situation in renewal front and back of "A" and "B" building and compared findings in effectiveness of a renewal, inspection of the saving water effect, renewal front and back till now. We suggest lavatory evaluation technique to evaluate a lavatory to the basis to think in a way of the environmental efficiency used in CASBEE from conventional actual survey investigation and analysis result by this report. Furthermore, We do an application to true building "A" and "B" building and examine lavatory evaluation technique.
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Satoshi ASANO, Yoshiharu ASANO, Hideki TAKAMURA
Article type: Article
Session ID: A-12
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The authors investigated usage in the washrooms and the sanitary fixtures in a junior high school. In this paper, the fundamental data for computation method of proper quantities on sanitary fixtures and tendency of usage in the washrooms were made clear. Frequency of usage and occupied time were measured at 6 washrooms. These data were recorded by the computers. The results of investigation were as follows; 1) Frequency of urinal usage in the boy washroom was 2.0 time a day, and frequency of toilet usage in the woman washroom was 1.4 time a day. 2) The average time of occupation of urinal in the boy washroom was 27.9 secs, and the average time of occupation of the woman toilet was 60.9 secs.
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Mitsuya MATSUO, Yuri NAKAGAWA, Shoko ARAKAWA, Hitoshi AKAI, Kaori KANA ...
Article type: Article
Session ID: A-13
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The education of elementary and junior high schools in recent years has been changing. Moreover it is attached importance to the use as social education to a local resident. It is assumed that it has affected the sanitary plan. Then, 2 times of questionnaires were carried out from the board of education about the toilet of elementary and junior high schools. It investigated the problem, countermeasure, evaluation, and required information when perfomiing new building and repair .
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Shoko ARAKAWA, Yuri NAKAGAWA, Mitsuya MATSUO, Hitoshi AKAI, Susumu TAK ...
Article type: Article
Session ID: A-14
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The education of elementary and junior high schools in recent years has been changing. Moreover it is attached importance to the use as social education to a local resident. It is assumed that it has affected the sanitary plan. Then, 2 times of questionnaires were carried out from boards of education about the toilet of elementary and junior high schools. After that, a questionnaire was carried out from teachers. It investigated the problem, countermeasure, evaluation, and required information when performing new building and repair.
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Yuri NAKAGAWA, Shoko ARAKAWA, Mitsuya MATSUO, Hitoshi AKAI, Susumu TAK ...
Article type: Article
Session ID: A-15
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The education of elementary and junior high schools in resent years has been changing. Moreover it is attached importance to the use as social education to a local resident. It is assumed that it has affected the sanitary plan. Then, 2 times of questionnaires were carried out from boards of education about the toilet of elementary and junior high schools. After that, a questionnaire was carried out from teachers. It investigated the problem, countermeasure, evaluation, and required information when performing new building and repair.
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Naoto TAKAOKA, Goro SEKI, Kazumasa OHASHI, Emi ISOBE, Hiroyuki OHMORI, ...
Article type: Article
Session ID: A-16
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In order to create the basic data in the case of a design to be used, in a real building, Transition of the annual amount of garbage discharge and the survey results of bulk space gravity are reported according to garbage kind and according to building use.
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Takashi MAMIYA
Article type: Article
Session ID: A-17
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Each sector gropes for recycling potentials according to the following laws: Basic Law for Establishing the Recycling-based Society and each Recycling Law. Recycling of recoverable materials and disposal of the residues have a reciprocal influence, however, the both procedures are independently implemented by different sectors without common protection goals. There are assumed to be problems concerning the definition, responsibility and cast of waste management. This report focuses on the waste management problems of Japan, to which were socially and ecologically paid attention, in comparison with that of Germany.
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Kyouichi FUJITA, Shigehisa KAWAGUTI, Hitoshi WATANABE, Kenichi KIMURA
Article type: Article
Session ID: A-18
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The results of investigation on the system design of the reuse center in the construction yard in order to make an effective reuse of building apparatuses and materials consisting of five phases and ten steps are described. Some problems with the roles of inspectors, application of RFID, diagnostics on degradation, performance guarantee and related matters are discussed. Major check points for designers of reuse system are raised.
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Minoru OKABE, Haruki OSAWA, Yasuo KUWASAWA
Article type: Article
Session ID: B-1
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Wood is natural material therefore, small emission of chemical substance have confirmed. When wood is used for interior finish, it is required to measure the indoor air quality in the full size house. The wood of two kinds of needle-leaf trees and one kind of broadleaf tree was constructed for interior finish of the house, and indoor chemical substance concentration was measured. Although emission of acetaldehyde was measured from the needle-leaf tree, indoor concentration showed reduction by the examination for two months. The percentage of terpenes was about 50% among TVOC concentration.
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Go IWASHITA
Article type: Article
Session ID: B-2
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Headspace experiments were conducted to identify terpene VOCs emitted from the specimens of cedar wood, pine wood and cypress wood. For these headspace experiments, a cylindrical small chamber was prepared in the clean room. The chamber was made of stainless steel with the volume of 0.28 m^3. After pure air was filled up to the chamber directly from a gas cylinder, the chamber was closed and not ventilated. Many sesqui-terpene VOCs were emitted from cedar wood. The emission of pinene<alpha-> was dominant for cypress wood.
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Deisy DIAZ, Yasuhisa KOBAYASHI, Toshihiro NAKAI, Tatsuaki TANAKA, Kiku ...
Article type: Article
Session ID: B-3
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Emissions of VOCs from the painted sample are influenced by the base board material. By the use of small chamber, the emission rates of VOCs from the painted samples on the aluminum board, the MDF board and the ceramic board were measured, and the effects of these base board materials on the emissions were investigated. Results are as follows VOCs are produced by the oxidations of oils and waxes, and base board material controls the oxidation process, consequently base board material controls VOCs emissions. The MDF board suppresses the VOCs emissions and the ceramic board, on the contrary, accelerates the emissions.
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Masahiro HORI, Jue HAN
Article type: Article
Session ID: B-4
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Selected four kinds of sources of acetaldehyde in indoor air and its formation mechanism were studied. Adhesive of vinyl acetate polymer emits acetaldehyde contained in the material in the drying process. Acetaldehyde is formed from the vinyl acetate polymer by hydrolysis reaction after drying and the formation rate is proportion to humidity in exposed air. Acetaldehyde is formed by oxidization of ethanol in an air cleaner with photo-catalysis when ethanol exists in inlet air. Acetaldehyde is also emitted more from core of wooden boards (a larch tree) then from side, and the emission rate decreases gradually till a tenth among one month after logging. Acetaldehyde also emitted from mold grown on non-dried wooden boards when it exposed to room air of 70 to 90 % in humidity for two months.
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Keiji MAEHARA, Megumi UMEZAWA, Hiroshi KIMURA, Tetuyuki TANIAI, Hiromi ...
Article type: Article
Session ID: B-5
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this study, an equation for predicting VOCs emission rate using the test chamber method is proposed to establish a simple prediction method of VOCs concentration in indoor environment. We have tried to make clear the influence of temperature and relative humidity for toluene emission rate from the paint origin. Since the estimated values fit well with measured values, we confirmed that the temperature influenced for toluene emission rate.
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Megumi UMEZAWA, Keiji MAEHARA, Hiroshi KIMURA, Tetsuyuki TANIAI, Hirom ...
Article type: Article
Session ID: B-6
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this study, the simple prediction equation for VOCs indoor concentration based on VOCs emission rate measured by the test chamber method is proposed. The emission rate decay of TVOC with passage of time is modeled as the double exponential formula and the simplified estimation method based on the emission behavior of TVOC from toluene free paints is presented. Thus, it is thought that it is effective to VOCs measures to apply the double exponential formula of TVOC of toluene free paints, and to evaluate the VOCs density attenuation period.
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Hiroshi KIMURA, Megumi UMEZAWA, Hiromi KOMINE
Article type: Article
Session ID: B-7
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this study, an equation for predicting formaldehyde emission rate in consideration of the background formaldehyde concentration using the test chamber method is proposed to establish a simple prediction method of formaldehyde concentration in indoor environment. Although the steady state concentration from the formaldehyde-emitting material can be expressed by using HBF (Hoetjer-Berge-Fujii) equation, the equation does not consider the background formaldehyde concentration. Thus we derived prediction equation of formaldehyde from HBF equation in consideration of the background formaldehyde concentration and verify the expressiono
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Atsuo NOZAKI, Yasuhiro HASHIMOTO
Article type: Article
Session ID: B-8
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Recently, building materials and furnitures are pointed out as the emission source of formaldehyde and volatile organic compounds or VOCs. Especially the furnitures may be a strong emission source. Some of the students complained the bad physical condition in school, and this phenomenon is a big social problems. So this study was carried out to determine on the VOCs and formaldehyde emission rates of school furnitures and its constituent materials. From our result, it turned out that the VOCs emission rates were 1158(μg/h) for equipment shelf, 29.3(μg/h) for locker, 86,7(μg/h) for testing bench and the one's of formaldehyde were 357(μg/h) for equipment shelf, 246(μg/h) for locker, 186(μg/h) for testing bench. It also turned out that the VOCs emission rates of its constituent materias were ranged from 13.3 to 32.3(μg/h) and the one's of formaldehyde were ranged from 1.4 to 7.8(μg/h).
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Atsuo NOZAKI, Tomoki HAYASAKA, Yasunori NARITA
Article type: Article
Session ID: B-9
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Recently, the sickness symptom related to school environment or so-called "sick school syndrome" is a social problem. Sick school syndrome is caused by chemical substances emitted from building materials and educational products.Some of the studies on sick school syndrome from a point of indoor air environment have been reported, however, we can't find the useful information on the emission of chemical substances from educational products. In addition, its size and form are various and different, and the standardized testing method has not been established.In this study, we determined the emission rates of chemical substances from some educational products and predicted pollutant concentrations in a classroom where the educational materials were placed. It turned out that the predicted value was not so serious to threaten health in an assumption of the steady-state under complete mixing, however, in an actual classroom where distribution of concentration consequently appears, concentration at the place near the emission source might be expected to be more higher values than our predicted ones.
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Sin-ichi TANABE, Nobutami HIROSE, Masafumi MORIMOTO, Yuichi HAMAGUCHI
Article type: Article
Session ID: B-10
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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To develop precise chamber for measurement livingware and electric appliances, related standards are investigated in the world. Blue Angel, BAM method requires special conditions for measurement photo copy machine and printers, since moisture from papers have an impact of condensation. Air temperature in chamber during the tests is different among Europe, US, and Japan. However, most of them are quite similar. Based on this review study on the requirements of emission test chamber, we develop new chamber. Mandatory requirements are confirmed by the experiments.
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Shin-ichi TANABE, Nobutami Hirose, Masafumi MORIMOTO, Yuichi HAMAGUCHI
Article type: Article
Session ID: B-11
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The standardization of the measurement of emission rate of chemical materials from electric appliance is requested in Japan now. Then, overseas standards were compared, and the point that the examination was necessary was confirmed again. Moreover, the emission rate of VOCs and carbonyls from electric appliance was measured by using 1m^3 and 24m^3 chamber. And, the difference with the volume of the chamber, the sample loading factor, and the electric appliance was examined. In addition, the emission rate of SVOC was measured at the same time in four samples.
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Nobuo NAKAHARA
Article type: Article
Session ID: OS-1
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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HVAC system simulation programs in Japan looks having ceased its development due to unhappy bubble economy boost followed by its collapse during the late 1980s to 1990s. In this period international environment in this area was far different from Japan. The TRNSYS, HVACSIM+, DOE2, BLAST and then EnergyPlus have been constantly upgraded to meet the world needs for HVAC application and high-technological developments, in contrast to the Japanese state as represented by popular application of distributed packaged unit system. The present paper overviews the state of the art in HVAC simulation technology in Japan compared with international activity and gives alarms to Japanese HVAC engineers as well as those people who are responsible for policy making on energy, environment, science and technology and engineering philosophy.
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Tetsuji YASUTOMO, Mingjie ZHENG
Article type: Article
Session ID: OS-2
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In Japan, a designer, an architect or a developer hasn't been practically using the energy simulation program yet, while now they begin to use it practically in USA because the energy simulation program has been developed continually and the user-friendly interface has already developed.The present paper shows the state of the energy simulation program in USA and aims to encourage the Japanese engineer to use the energy simulation program.
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Song PAN, Masaya OKUMIYA, Nobuo NAKAHARA, Da YAN, Yi JIANG
Article type: Article
Session ID: OS-3
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In recent years, the importance of commissioning is going to be recognized. In China, Using simulation tool to optimize the design process and to estimate the energy consumption of HVAC system is getting more and more important. In this paper, authors introduced the only one program , DeST, developed in China and the trends of simulation program use.
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Tatsuo INOOKA, Ryuji YANAGIHARA
Article type: Article
Session ID: OS-4
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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A role of ACLD and ACSS as the energy simulation program is described. And their basic mathematics models, such as a time average model and relation of a load calculation and simulation are described. A way of thinking of a method to integrate similar programs derived in various ways in one core solver, and some problems when integrated for future extensions, an interval for 15 minutes, air flow window systems , thermal storage using a structure body, a problem of weather data and a diversity factor of inside heat generation are described.
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Takeshi WATANABE, Hideharu NIWA, Mika YOSHINAGA, Mingjie ZHENG
Article type: Article
Session ID: OS-5
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The environment to utilize Dynamic System Simulation have been improved very much by development of IT and the spread of a broadband. This report introduces a representative Dynamic System Simulation program and the practical use examples. It is thought that a program to have a module form becomes the mainstream in future because the degree of freedom is high. In particular it is thought that TRNSYS and HVACSIM+ are improved to be easy to use it more.
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Yasuo UTSUMI, Hisaya ISHINO
Article type: Article
Session ID: OS-6
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Simulation takes very important role in the filed of architecture and the magnificent efforts for the research and development have been made in many countries. Here some examples for the related activities are introduced, such as, IBPSA, International Building Performance Simulation Association, its Japan branch activities and the issues of the mailing list, and the attempt to establish a information center of thermal simulation in the framework of international researchers and its questionnaire. Also the status of the simulation tools is discussed and the necessity of the team that covers wide spread simulation related areas is pointed out.
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Motoi YAMAHA, Yasunori AKASHI, Harunori YOSHIDA
Article type: Article
Session ID: OS-7
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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An international study on `Commissioning of building HVAC systems for improved energy performance' has been conducted in the IEA/ECBCS/Annex40 from 2001 through 2004. The objective of this study is to develop, validate and document tools for commissioning of building HVAC systems. The tools are mainly divided into standard models of commissioning plans, manual commissioning procedures, BEMS-assisted commissioning tools and use of computer simulation models. This paper introduces the study on the use of computer simulation models and shows how the tool should be developed in the future.
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Hideharu NIWA, Shigeru TOKITA, Katashi MATSUNAWA, Yoshibumi SUGIHARA, ...
Article type: Article
Session ID: OS-8
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The Importance of LCEM (Life Cycle Energy Management) has been recognized from the view of life cycle energy saving of sustainable buildings. The purposes of this research are proposal of flame work of LCEM and development of prototype of HVAC system simulation tools for LCEM. In this report outline of flame work of LCEM and necessity of energy simulation tool for LCEM are discussed. And the algorithm and structure of the tool are described. In addition, one concrete example of application of simulation tool for regulation of a water supply system is shown.
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Qi TIAN, Yukihiro KAWAZU, Noriyoshi YOKOO, Tatsuo OKA
Article type: Article
Session ID: C-1
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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It has a big influence on energy conservation and a comfortable indoor environment by effective use of a natural lighting in buildings. It is important that forecasting the daylight environment and examining it from an initial design stage. In this research, the result of daylight factor obtained by ECOTECT software (daylight environment simulation software), the experiment with a model, the simple calculation method, and the actual measurement in a building, were compared. The case study building is the JIYU GAKUEN MYONICHIKAN of F.L Wright designed, and measurement and simulation conducted in the dining room conference room and large hall.
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Minoru INANUMA, Hitoshi TAKEDA, Nozomu YOSIZAWA
Article type: Article
Session ID: C-2
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper shows a production method of typical annual weather data (TWD9302). TWD9302 is consist of two datasets. One contains ambient air temperature, absolute humidity, wind direction, wind velocity, nocturnal radiation, illuminance and irradiance at intervals of one minute.The other contains modified data at intervals of 30 minutes by sky luminance distribution and sky radiance distribution. Long-term observation data had been gained in Chofu-city, Tokyo, Japan from 1993 to 2002. TWD9302 makes it possible to improve the precision of illumination simulation and cooling/heating load calculation with taking sky luminance distribution, illuminance, sky radiance distribution, irradiance and night radiation into consideration.
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Junichi KONDO, Minoru INANUMA
Article type: Article
Session ID: C-3
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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As for the sun-shading performance, an external blind with the outside slat is superior to the double skin and the air flow window. The authors previously performed a research on the thermal performance evaluation method for an external blind by comparing the calculated and experimented results and the accuracy of the calculation algorithm was proved. A principal objective of this paper is to propose the time interval of the suitable solar radiation data from a result of simulation for the external blinds where the horizontal slat having a rectangle section is installed on the whole surface.
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Satoshi NAKAYAMA, Hisaya ISHINO
Article type: Article
Session ID: C-4
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The solar irradiance is more fiuctuant factor than the other weather elements. The popularized weather data for architectural environmental engineer are almost made up for each one hour, and those are turned out to the averaged data without fluctuation specificity. In this paper, we examined the characteristics of short-time fluctuation of solar irradiance and the effects on rounding errors of peak values in several cases the integration time.
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Kimiko KOHRI, Hisaya ISHINO, Takuji OGATA
Article type: Article
Session ID: C-5
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The peak load of HVAC equipment depends on characteristics of the weather and thermal performance of buildings. The authors examine characteristics of the weather and proposed two types of heating design weather data, on the t-xbasis and on the t-Jh basis.
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Kimiko KOHRI, Hisaya ISHINO, Atsushi MOROOKA
Article type: Article
Session ID: C-6
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper discussed on a production method of cooling weather data, especially the number of extreme weather days required to produce the proper design weather conditions, and examined the frequencies of cumulative occurrence of the daily value of produced design weather. Three types of cooling weather data sets were presented for 20 cities.
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Kimiko KOHRI, Hisaya ISHINO, Takashi SUZUKI
Article type: Article
Session ID: C-7
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Design heating and cooling peak loads were calculated by using the proposed design wether data for 12 cities. The probabilities of occurrence of the load exceeding the design peak value were also obtained from the ranking of hourly loads over 20 years. The adequacy of design peak loads on three types of equipment were confirmed.
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Manabu OKURA, Kiyoaki ONO
Article type: Article
Session ID: C-8
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In order to keep environment in the air-conditioned room comfortable, it is important to anticipate air velocity and temperature fields precisely. The code solving simultaneously the Navier-Stokes equations governing flow field inside and outside the room and the heat conduction equation applying to walls, instead of assuming the heat transfer coefficient between the fluid and the surface of solids, are developed. The experimental and the computational results showed good agreement. It is put to use to the problem of the internal and the external insulation of the cubic shell during the cooling process.
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Takashi SUGIMOTO, Tadahiko IBAMOTO, kazumi NAKAYAMA, Kiyoshi TOKITSU, ...
Article type: Article
Session ID: C-9
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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It experimented in order to grasp about the rate of convection heat transfer of the fundamental heat characteristic of fluctuating breeze. improving Error margin under non-isothermal situation was assumed to be a problem by the former report. Therefore, improving the experiment device and grasp of the rate of convection heat transfer of non-isothermal stationary airflow and it's fluctuating breeze was tried. And improving Error margin of airflow interplay of 'fluctuating breeze and relative speed airflow'
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Takeshi OGASAWARA, Yasushi KONDO
Article type: Article
Session ID: C-10
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In the heat load calculation used in design of air conditioning system, radiative heat transfer phenomena is treated in very simple way. Radiative heat transferred from a wall to other walls is simplified as the heat between walls and room air, in which the radiative heat flux is estimated as the product of the radiative heat transfer coefficient and the temperature difference between room air and a wall. However the shape of room, obstacles in the room etc. could influence the radiative heat flux, the simplified expression of the radiation neglects such influence. In this paper, the method to evaluate the radiative heat transfer coefficient based on the CFD simulation is presented, in which the radiative heat transfer between obstacles and walls etc. and the convective heat transfer from walls to air are analyzed precisely. The radiative heat transfer coefficient is estimated in several case studies applied to office room models.
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Tatsuhiro KATSUKI, Hideo YAMAMOTO
Article type: Article
Session ID: C-11
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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Calculation method of exit temperature of circulating water, based upon enthalpy-based overall unit conductance is proposed and its validity confirmed by on-site measurement. On-site measurement was performed and numerical calculation was done in order to reproduce the real operating conditions. Computational results and measured data agreed within 4% and the validity of proposed calculation method for exit temperature of circulating water in cooling tower is confirmed.
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