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Shisei WARAGAI, Yousuke MINO, Ari YOSHII, Tsuneo UEKUSA
Article type: Article
Session ID: G-40
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In a data center, an abundance of server hardware is set up for handling large volumes of data, and in order for these hardware devices to operate normally, a reasonable temperature environment must be maintained. While getting to grips with mounting methods to accommodate the racks and specifications of these information-processing devices, air-conditioning designers need to work out designs suitable for air flow in raised floors. It cannot, however, be said that the fundamental information needed for such design tasks is sufficient under present circumstances. As regards the design of the air flow around a rack mounted with information-communication devices such as blade servers, this paper presents the results of a study using actual large-scale test devices.
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Norikazu TSUNODA, Manabu KISHITA, Hiroaki MIYAKE, Tsuneo UEKUSA
Article type: Article
Session ID: G-41
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Each device is used under certain ambient conditions. In the case of deviation from this temperature range due to inadequate cooling, troubles such as drops in CPU performance can occur. Given this background, in the current study, experimental measurements-in this case, simulated heating elements (1.5kW×3)-mounted in a hardware-containing rack were performed in order to verify the optimum thermal environment for the devices.
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Keiichi ISHIZUKA, Atsushi TAKAHASHI, Tatsuki OHGAMI, Minoru SUEYOSHI, ...
Article type: Article
Session ID: G-42
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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We have developed a new HVAC system for laboratory animal rooms, which is named Takasago Laboratory Animal Air Conditioning System (TLACS). We have installed TLACS as a renovation of facilities in the laboratory animal room and performed the commissioning as compared with the actual conventional HVAC system. As results, it was reconfirmed that TLACS was better HVAC system for laboratory animal rooms, based on data of the energy consumption, the room temperature distribution and concentration of airborne dust particles and ammonia.
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Naonori KURODA
Article type: Article
Session ID: H-21
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The inverter control of the fan and the pump is raised as a method that can be most easily introduced as an energy conservation technique. Then, data in the effect of the power consumption reduction by the inverter control of the pump was measured. As a result, if the reactor for the power factor improvement was not used, it was clarified that the effect of conservation of energy was small.
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Yasuo IGUCHI, Mikinori ONDA
Article type: Article
Session ID: H-22
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The effects of energy conservation by using Darg Reducing Additive depends on the design and operation of the water transfer system, and it is a lot of troubule to evaluate that. But, it is required to evaluate the economic effects of energy conservation speedily in the first stage of the business such as ESCO. This paper reports that a convenient chart on the basis of some results was prepared for making sure of such an evaluation easily.
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Masahito MIKE, Masaki NAKAO, Masatoshi NISHIOKA, Minako NABESHIMA
Article type: Article
Session ID: H-22
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this research, it paid attention to the pump selection technique and the dynamometer calculation when equipment was designed. And, it proposes the model for investigation of actual conditions and the pump electric motor output trial calculation of the pump efficiency. It has been understood that the maximum efficiency of a pump on the market is a value that is larger than A efficiency. Moreover, the model type that was able to calculate efficiency, total head, and the brake shaft power was made by using two variables the ratio speed and flowing quantity.
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Hiroko MASUDA, Masaharu NAKAMURA, Dai MIZUOCHI, Kenichi FUJITA
Article type: Article
Session ID: H-24
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In design phase, capacities of HVAC Systems shall conform to the maximum requirements within the range of assumptions. On the other hand, operations of HVAC Systems in existing buildings are usually performed in a matured manner under the long-term experiments. In these cases, it is expected that the proper energy reduction would be obtained along with the proper sizing of HVAC Systems by the quantitative analysis of the experimental operating conditions. This paper describes the concept and the experimental results carried out by accurate measurements of the pressure profile of heating and cooling water distribution system in an existing building.
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Hiroshi NOGUCHI, Norio KOMURO, Kiyohiro YAMAMOTO, Fumio NOHARA, Sanae ...
Article type: Article
Session ID: H-25
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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It is important to define the procedure of diagnosis in case of energy analysis. In addition to this, energy management tool, which can be used by everyone, is needed. Therefore, we defined energy management cycle and developed energy management tool for energy solution service. In this report, outline of energy management tool newly developed is described.
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Satoshi HAYAKAWA, Fumio YAMADA, Hiromi KOMINE, Tatsuo INOOKA, Ken-ichi ...
Article type: Article
Session ID: H-26
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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This paper describes the configuration, the input stream, the computation, the actual energy consumption comparison, and the method of practical application of the simulation tool for energy consumption rate developed so that Energy Conservation Center, Japan may support the management of the energy consumption rate in the office buildings. This tool can simply calculate the annual energy consumption and that for each building services in the office building by inputting the data such as the variation of the building services and the end-use condition.
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Masaharu Nakamura
Article type: Article
Session ID: H-27
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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PI or PID controllers have been applied in HVAC systems, and huge number of tuning methods are known but not widely accepted by field engineers. This paper described the new PID tuning method developed with HVAC systems considerations.
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Ryouichi KUWAHARA, Norio KITO, Masaki SHIOYA, Masao NODA
Article type: Article
Session ID: H-28
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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We measured the effect of thermal mass storage system using packaged Air-Conditioner in summer and winter. The amount of thermal storage was different according to the kind and airtight in the ceiling of the material. The effect of the thermal mass storage becoming large by using the material with high thermal capacity. Moreover, it was able to be confirmed that the effect of thermal mass storage grew if airtight was raised.
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Takumi SUGIURA, Noboru OOSHIMA, Yasuhiro KASHIRAJIMA, Teruo MIKAMI, Na ...
Article type: Article
Session ID: H-29
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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We applied floor thermal storage system using packaged air-conditioner to the office building and evaluated the basic performance and energy consumption. As a result, we confirmed that air-conditioner keeps on operating stably during thermal storage time in case of using simply improved packaged air-conditioner. When the air-conditioner is operating, return air was cooled during coming through ceiling chamber by using thermal storage in slab and the load of air-conditioner was reduced. And, energy consumption of thermal storage system was also reduced compared with standard system.
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Daisuke NAGANUMA, Yoshihiro TAKAHASHI
Article type: Article
Session ID: H-30
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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As for the Thermal Mass Storage system, a merit such as a load leveling and reduction of machinery is expected. However, there are a few study reports of a Thermal Mass Storage system in a northeastern area. Therefore we measured a Thermal Mass Storage system in the building, which we adopted. An investigation item is energy consumption (quantity of cold water radiation of heat or an amount of used electricity of a refrigerator), Thermal Storage Quantity to a skeleton , quantity of radiation of heat and indoor warm temperature environment.
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Katsuhiro MIURA, Toyohide OIKAWA, Tooru KONNO, Minoru BABA, Toshimi AK ...
Article type: Article
Session ID: H-31
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Thermal storage in building mass for heating was planed and applied in Sapporo, Hokkaido. The basic idea and the design of the HVAC system were explained in the paper. The annual electricity consumption was measured and analyzed, especially for defrost in winter and of indoor fan for the thermal storage. Indoor environment was evaluated in cooling period and heating period. The air temperature close to the floor level ascended at the beginning of office hour. It was expected to improve thermal comfort of occupants.
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Koji SAKAI, Masaki MANABE, Hitoshi YAMAZAKI, Syoichi KOJIMA
Article type: Article
Session ID: H-32
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The primary aim of the present study is to evaluate thermal storage performance of the thermal storage medium embedded with metal fins and to prepare and accumulate design data. Thus, basic study was performed on concrete structure embedded with metal fins by means of model experiment and numerical analysis, and it was confirmed that thermal storage time was reduced and thermal storage efficiency was improved due to the embedding of metal fins. In this paper, for the purpose of the prediction accuracy improvement, we confirmed convective heat transfer distribution of fm surface using CFD.
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Satoshi MIYAGI, Yoshiyuki KAMIYA
Article type: Article
Session ID: H-33
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In the previous report, the authors confirmed the effectiveness of the installation of jellied water thermal storage body between deck plate and guide plate experimentally. However, notwithstanding the rapid charging and discharging characteristics of jellied water thermal storage body, the stored heat capacity of that is not enough. In this study, installation of air path and jellied water thermal storage body above the deck plate is proposed to increase stored heat capacity. Experiments were conducted by changing conditions with and without the air path and the jellied water thermal storage body, and the effectiveness of that was confirmed. In addition, the temperatures of slab and jellied water thermal storage body calculated by simulation programs were consistent with the results of the experiments.
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Takashi AKIMOTO, Atsushi HIRATA, Makoto KOGANEI, Junta NAKANO, Masafum ...
Article type: Article
Session ID: H-34
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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This research was carried out to evaluate the heating system using warm air through void slab structure. Numerical simulation was conducted to see if the system could warm up the floor and room when the solarwall, which could collect solar heat energy, was applied for heat source. To find out the most suitable situation, input data relating to the design of void pattern, air volume rate, air flow direction, and so on were changed for the numerical simulation. It will be needed to investigate the combination of the other indoor heating system with the proposed system.
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Toshiyuki MIURA, Shigeru KURIKI, Hiroshi NUMATA, Jyoichi KOIKE
Article type: Article
Session ID: H-35
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This study shows the effects of a heat storage floor employed in an outside insulated building with southern attached greenhouse. As the air in the greenhouse was heated by winter solar radiation, it1s circulation was caused by it1s buoyancy. The heat from the circulation air obtained from solar radiation was stored in the second floor slab when the air passed through the first floor ceiling plenum. The thermal performance of the heat storage floor is described in this report ; we compared the effects of the warm air circulating from the greenhouse with one that had no warm circulation.
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Yoshimi IWATA, Shigehiro ICHINOSE, Toshihumi KOBAYASHI, Kazuo NAKAI, H ...
Article type: Article
Session ID: H-36
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The thermal storage tanks which are installed in buildings are useful air-conditioning system in terms of shifting electric demands from daytime to nighttime. Especially, connected complete mixing tanks have already popularized. Aiming to further improvement of its thermal storage performance, we remodel connected complete mixing type to stratified type and carried out a field test. In this report, improvements of thermal storage balance using perforated diffusers are presented.
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Takeshi IWATA, Hiroaki KITANO, Kazunobu SAGARA, Yukio ISHIKAWA
Article type: Article
Session ID: H-37
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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A mixing model of temperature-stratified thermal storage tank is presented, and a series of experiments was conducted in order to examine the effect of inlet geometry such as the shape and size on parameter of mixing model such as initial depth of complete mixing region. Two kinds of inlet type were examined; pipe and multi-holes inlet types. Inlet performance calculated with the mixing model was studied for various input conditions, and it was found that the inlet types of multi-holes have possibility of making performance imbalance.
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Hiroaki KITANO, Takeshi IWATA, Kazunobu SAGARA, Yukio ISHIKAWA
Article type: Article
Session ID: H-38
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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Two types of outflow model for temperature stratified thermal storage tank are presented. Experiments were conducted with two types of cylindrical tube outlet to grasp outflow behavior and the temperature profile in tank calculated by using these models is compared with experimental result. It was found that the temperature profile calculated by using the models agreed well with the experimental results.
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Issei MATSUMURA, Kazunobu SAGARA, Toshio YAMANAKA, Hisashi KOTANI, Shi ...
Article type: Article
Session ID: H-39
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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Because almost all air-conditioning systems having thermal energy storage do not have flowmeter, it is difficult to know the behavior of the system. This research aims to estimate the flow rate of such air-conditioning system, using tempreture in tanks which is easy to measured. In this paper two methods of flow rate estimation will be reported. One is based on heat balance of each tank and the other is based on control characteristic of heat source.
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Taichi MURATA, Seiji NAKAMURA, Seiji SHIMAOKA, Yukihiko OKA, Ryuji YAN ...
Article type: Article
Session ID: H-40
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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"TSC/prog" has a feature called "TSC/solution" which helps existing thermal storage controller with its sophisticated control algorithm such as time series load prediction. However, we have been reported that thethermal storage system adopted TSC/solution still could not achieve its prescribed performance. We found that the cause was not the advanced algorithm, but the simple control functions. Based on this result, we have summarized the specification of new type thermal storage controller called "TSC/ctrl" which solve problems of ongoing controllers, and offer stable and high-level control functions.
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Yoshinobu Toda, Minoru Kawashima
Article type: Article
Session ID: H-41
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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This paper shows a brief method and one-year operation result of near optimal control with thermal load prediction by artificial neural network system introduced into a laboratory building with several energy conservation systems such as gas-electricity compound heat source, high-efficiency stratified thermal storage system, and free-cooling system.
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Hideki TAKAMURA, Yoshiharu ASANO
Article type: Article
Session ID: H-42
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The floor heating system that constructed of latentlsensible heat storage material with using off-peak electricity needs prediction control system of the next days heating load. The authors constructed the neural network including possibility presumption models of heating period including early spring. Next, the authors predicted maximum heating set temperature of storage materials by range of the possibility about heating load that was predicted by the neural network. The following results are clarified. (1)The authors could predict same range of possibility about heating load that predicted already reported. (2)The authors could predict maximum heating set temperature of storage materials that made the room temperature comfortable.
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Hideharu NIWA, Hideki YUZAWA, Katashi MATSUNAWA, Akira OKAGAKI, Tomohi ...
Article type: Article
Session ID: I-19
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In this paper "Urban Productivity / Energy Co-efficiency" defined based on a general idea of "factor" is discussed. And some examinations of index for assessment of "Urban Productivity / Energy Co-efficiency" are performed for whole cities and core areas of several cities. In this paper floor areas of buildings and population are adapted as the index of urban productivity. From the results of examinations it is shown that indexes for assessment are different between whole cities and core areas.
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Makoto HISHIDA, Hideki YUZAWA, Katashi MATSUNAWA, Hideharu NIWA, Akira ...
Article type: Article
Session ID: I-20
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this paper, the results of examinations of "Urban Productivity / Energy Co-efficiency" at the town squares are reported. Three town squares in Tokyo, Osaka, and Nagoya have been selected as the model for this examination. From the results of examinations it is shown that indexes based on primary energy consumption, amount of CO_2 emission and waste heat exhausted to the atmosphere are different among three town squares, because of the building use and the energy supply system.
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Akira OKAGAKI, Hideharu NIWA, Hideki YUZAWA, Katashi MATSUNAWA, Tomohi ...
Article type: Article
Session ID: I-21
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this paper a simple type of tool which is developed to analyze "Urban Productivity / Energy Co-efficiency" for various energy supply systems are introduced. Using this tool, it is shown that "Urban Productivity / Energy Co-efficiency" will improve by introduction of the high efficient heat-source machines, by utilizing unused energy, and by improvement of efficiency of generators.
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Takashi ASAI, Yohei YAMAGUCHI, Yoshiyuki SHIMODA, Minoru MIZUNO
Article type: Article
Session ID: I-22
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In order to reduce carbon dioxide emission sufficiently at the city scale, a saving energy strategy should be appropriately implemented into the commercial sector. To support designing such a strategy, this paper suggests a methodology to model the end-use energy for the commercial sector at the city scale. This methodology can be characterized by the bottom-up structure that enables to evaluate energy saving measures with different scopes from improvement of energy consuming appliances to insulation of buildings and advancement of energy generation and distributed systems. This paper evaluates the effectiveness of various energy saving measures for the commercial sector of the Osaka City.
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Hidemitsu KOYANAGI, Masahumi SAITO
Article type: Article
Session ID: I-23
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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On this study we suggested "Regional Microgrid" and "Building Microgrid" for the energy infrastructure utilizing renewable "New Energy". And for the purpose of estimating the energy conservation of "Building Microgrid", we simulated the annual energy comsumption utilizing "Building Microgrid" . As a result , we estimated 15.5% reduction of the annual energy comsumption and 29.7% reduction of carbon dioxide discharge.
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Hiroshi YAMANE, Tomoya SOGO, Yoshifumi MURAKAMI, Tomohiro NAKAMURO, Mu ...
Article type: Article
Session ID: I-24
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The energy saving system by the absence is effective. However, there are some problems easing the temperature setting value of an absent zone give the influence to the adjacent zone, though the reduction in the lighting energy of an absent zone is connected directly with the energy saving. Then, we tried to experiment of these systems and confirm of the effect.
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Mitsuhisa FUKUDA, Hiroshi YAMAMOTO, Takashi OHNO
Article type: Article
Session ID: I-25
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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We are performed adjustment or operation improvement of the many buildings air-conditioning system for the purpose of energy reduction in 2003 fiscal year. This thesis relates to energy saving of an office building. It is known that quantity of consumption energy of a refrigerator is reduced when I put up indoor dry-bulb temperature. Setting in an air-conditioner of a certain office building to 28 degrees Celsius from 2b degrees Celsius and inspected how consumption energy of a refrigerator decreased . Refrigerator consumption energy was discussed by an inspection result conventionally.
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Natsumi NARITA, Shuzo MURAKAMI, Toshiharu IKAGA, Kou SAKABE, Norihiro ...
Article type: Article
Session ID: I-26
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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Sick building syndrome caused by indoor air pollution has become very serious nowadays. Increase of the amount of ventilation is recommended for improving indoor air pollution. But it has negative effects on energy saving and global warming mitigation. In this study, the effects of the ventilation on direct health damages by indoor air pollution, and on indirect damages with cooling and heating energy consumption are evaluated using LIME; Life-Cycle Impact Assessment Method of Endpoint modeling. The result of assessment proves that ventilation is effective in human health damages and 0.5 times/h of air change rate is most effective in total expenses.
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Kazuhiko TOMITA, Masumi MIZUTANI
Article type: Article
Session ID: I-27
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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As a substitution of ethylene glycol, the antifreeze solution for road heating which made of potassium acetate to be main component was developed. In this report, corrosion test for various piping materials, operation test using actual road heating systems and biodegradable test were carried out, in order to clarify the applicability of this solution to road heating systems.
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Hideki ASAMA, Shin-ichi AKABAYASHI, Jun SAKAGUCHI, Akihiro YAMAGISHI
Article type: Article
Session ID: I-28
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This study described the energy consumption of Air-conditioners and Refrigerators on the houses in Hokuriku district. The result of the measurement is as follows: (1) The electric power consumption and COP of the air-conditioner in summer season is more than winter. (2) The electric power consumption of a refrigerator increases in a summer. The electric power consumption of the actually measured refrigerator is more than the electric power consumption indicated by the catalog.
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Masamichi ENAI, Hiroki TAKAHASHI, Hirofumi HAYAMA, Hiroki KIKUTA
Article type: Article
Session ID: I-29
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The energy consumptions in thirteen houses were measured throughout the year in Hokkaido District. In this report, the energy consumption for heating is discussed. Generally, more than 60 % of the total energy consumption was used for heating in winter. The heating energy was related to the specific heat loss coefficient and the indoor-outdoor temperature difference. Its correlation ratio was worse than a forecast
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Hirofumi HAYAMA, Hiroki TAKAHASHI, Masamichi ENAI, Koki KIKITTA
Article type: Article
Session ID: I-30
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this research, the energy consumption and room air temperature of houses were measured in Hokkaido. As results, (1) Change of room temperature is influenced of the difference of temperature outside the interior of a room, and daylight hours. (2) The standard deviation of the room temperature for one year was the value of 2-3 [℃]. (3) The room temperature for one year was totally kept between 16℃ and 30[℃]. (4) Heat insulation of a building and cover of the sunrays from a window bring about equalization of room temperature.
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Kazusa KOIKE, Toshiharu IKAGA, Shuichi MIURA, Yutaka TONOOKA, Yoshiyuk ...
Article type: Article
Session ID: I-31
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The household energy consumption simulation tool according to administrative divisions described by the previous papers was applied, and the energy consumption simulation tool for each home was developed. Actual energy consumptions in 80 houses located from Hokkaido to Okinawa Prefecture were compared with the simulation values. Simulation results were almost same as actual energy consumption values.
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Toshiharu IKAGA, Shuichi MIURA, Yutaka TONOOKA, Yoshiyuki SHIMODA, Kaz ...
Article type: Article
Session ID: I-32
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The household energy consumption simulation tool according to administrative divisions described by the previous papers was applied, and this paper describes the outline and its case studies of the macro simulation method on household energy consumption and CO_2 emission by each administrative division up to 2020
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Kyoko SHUKU
Article type: Article
Session ID: I-33
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This research is to understand the realities of energy use for the houses in semi-cold district, and to contribute to the development of highly effective equipments. The measurement investigation was done for ten houses around Matsumoto city in Nagano Prefecture. The report has shown the actual results of the running cost according to the usages and according to the energy sources.
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Tatsuaki TANAKA, Mikiko HAYASHI
Article type: Article
Session ID: I-34
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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There are 26 housing exhibition scenes in Germany. The exhibited houses can be classified into some. A lot of devices are done in house equipment. There are a lot of use of solar energy such as solar batteries and solar collectors because nuclear power generation is not done in Germany. They become measures for controlling global warming. Security installations have been very enhanced, too. There are a lot of points that should be learned.
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Daisuke MATSUOKA, Takao TSUCHIYA, Hiroaki SAITOU
Article type: Article
Session ID: I-35
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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It is difficult for practitioners to perform the sophisticated moisture transfer calculations. Knowledge of internal condensation is not enough for practitioner. Based on these background, We developed simplified calculation method based on steady state calculation method involving absorption and desorption. According to concluding remarks of comparison with precise calculation method and experiment, simplified method quite agree well with precise method and experiment with glass fiber insulation.
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Kazuhiko MIZUTA, Shuzo MURAKAMI, Toshiharu IKAGA, Hideharu SEGUCHI
Article type: Article
Session ID: I-36
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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This study analyses how much greenhouse gas could be reduced by renovating the thermal insulation for complex houses with IBEC model, focusing on the period for renovating and the differences of insulation level. Non-freon type of polyurethane spray foam was applied for the renovation. As a result, the LC-GHG value for 100 years can approximately be reduced by 10 to 65%, those differences mainly caused by the difference of initial insulation level.
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Tadashi MIZUISHI, Shuzo MURAKAMI, Toshiharu IKAGA, Natsumi NARITA
Article type: Article
Session ID: I-37
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The purpose of this study is to simulate the effect of reductions in greenhouse gas emissions by upgrading insulation levels of existing houses. If 50% of existing houses that were built over 30 years ago (in 2005) are renovated to comply with the latest energy-saving standards (established in 1999) by 2010, and 50% of the residual fluorocarbons are recovered and disposed of during demolition, in addition to the measures for new houses (i.e. improving insulation standards and replacing foaming agents with non-fluorocarbon types), GHG emissions during the period 2008-2012 can be reduced by 2.0% over 1990. Moreover, if 50% of existing houses which were built over 20 years ago (in 2005) are widely targeted, GHG emissions during the period 2008-2012 can be reduced by 2.9% over 1990.
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Takao TSUCHIYA
Article type: Article
Session ID: I-38
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The cellulose fiber insulation is recognized as one of materials required no vapor barrier because of its potential force, adsorption and desorption mechanism. However, the criteria of its application has not yet been developed. In the course of evaluation, how to get the maximum moisture content of cellulose fiber is necessary. In this report, the relationship between maximum moisture content and the regional climatic condition, especially outdoor temperature and relative humidity, is discussed and also presented is the simple function for the maximum moisture content of cellulose fiber (W_<max>) expressed in terms of average temperature (T) and relative humidity (RH) in January as follow, Wmax=0.277{T-4.5-0. 15(RH-60)}^2+16
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Yujiro HIRANO, Yukihiro KIKEGAWA, Hiroaki KONDO
Article type: Article
Session ID: I-39
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper presents results from an intercomparison of methods for estimating the sensitivity of energy consumption for air-conditioning and hot-water in residences and office buildings to the ambient temperature. Methods based on seasonal and diurnal variations of unit energy consumption, air-conditioning load simulations, seasonal variation of energy supply, heating and cooling degree-days and predicting feed-water temperature were compared and characterized.
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Takao SAWACHI, Takashi AKIMOTO, Yuji HORI, Yasuo KUWASAWA, Akinori HOS ...
Article type: Article
Session ID: I-40
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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For developing an autonomous housing system, it is essential to evaluate the performance of energy consuming appliances and resource recycling systems in a status where they are actually operated in the house. By using two mock-up units in a multi-family residential building, one with a conventional system and the other installed the systems with a higher energy saving capability, the authors conducted comparative study to verify the effectiveness of those energy saving techniques and systems. This paper presents outline of the experimental method for the validation and the experimental result for reduction of CO_2 emission.
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Yuji HORI, Takao SAWACHI, Akinori HOSOI, Yasuo KUWASAWA, Takashi AKIMO ...
Article type: Article
Session ID: I-41
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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For developing an autonomous housing system, it is essential to evaluate the performance of energy consuming appliances and resource recycling systems in a status where they are actually operated in the house. By using two mock-up rooms of multiple-family residence, one with a conventional system and the other with a higher energy saving capability, the authors conducted comparative study to verify the effectiveness of energy saving techniques and systems. This paper shows experiment result of energy consumption for hot water supplying.
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Yoshimi UEDA, Hirofumi HAYAMA, Masamichi ENAI, Taro MORI, Kaai TAMURA
Article type: Article
Session ID: I-42
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The purpose of this research are to survey the disease at the bathroom in the area where climates' differ using ambulance data analyzed statistically by SPSS, and to perform local comparison. The results were as follows. 1) Disease at a bathroom has more high danger to the house. Moreover, the influence of outside temperature and the illness grade is as large as a warm area. 2) Sendai was most greatly influenced of outside temperature with the disease which resulted in death. 3) Not only in a cold area but also in a warm area, it is important to propose plans for maintaining these temperatures at an appropriate level.
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Hirofumi IDA, Motoyasu KAMATA
Article type: Article
Session ID: I-43
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The new bathtub for a prefabricated bathroom having the extra-good heat insulation capacity is recently released. In order to evaluate the performance of this new bathtub, the measurements of the heat insulation capacity between the new bathtub and a standard bathtub is compared. The data of them are experimentally measured both under laboratory conditions and under real use conditions. The thermal insulation performance of the bathroom in a general house is also reported on the basis of the measurements of the thermal loss coefficients about the two bathrooms which have the former two bathtub in each of them.
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