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Masashi IMANO, Motoyasu KAMATA
Article type: Article
Session ID: E-32
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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With using an open source CFD toolbox OpenFOAM, we perform several benchmark tests about numerical simulation of flow , such as a backward-facing step flow and a flow around square prism exposed with a turbulent boundary layer. In addition to that we examine parallel efficiency of OpenFOAM for a domain de-composition analysis using two or four processors. As a result, the following conclusions are revealed: 1) The results of OpenFOAM are in good agreement with past reliable calculation results. 2) The parallel efficiency of OpenFOAM is generally high enough for practical use.
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Yoshihiro AIZAWA, Yasushi KONDO, Takanori OSHIMA, Yukiko ABE, Takeshi ...
Article type: Article
Session ID: E-33
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Indoor environment in house kitchens, such as temperature, humidity and air quality, is influenced by capture efficiency of an exhaust hood. When thermal plume over a cooking range is captured well by a hood, indoor environment can be kept in comfortable condition. However, in real house kitchens, there exists air disturbance due to air supply from ventilation system or air-conditioning system, and a part of thermal plume flows into a living room. Therefore ventilation system should be designed appropriately to keep capture efficiency of an exhaust hood high. In this paper, the relationship between position of air supply and indoor environment is studied by experiments. Four typical air supplies at different position are supposed in the experiment and indoor environment is examined by the flow visualization and measurement of distributions of temperature and humidity.
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Takanori OSHIMA, Yasushi KONDO, Yoshisiro AIZAWA, Yukiko ABE, Takeshi ...
Article type: Article
Session ID: E-34
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper presents the CFD simulation on the airflow and temperature distributions in the house kitchen and adjoining living room. Four types of air supply position are supposed in the simulations same as in the experiments shown in the previous paper. The simulated results show that the position of air supply influences the capture efficiency of heat from gas range by the exhaust hood, and then influences the indoor air temperature. The Direct Capture Efficiency of the exhaust hood is evaluated based on the contaminant distribution calculated by the CFD simulations and an appropriate air supply position is examined in this paper. The airflow patterns given by the CFD simulations are also compared to the flow visualization observed in the experiments.
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Shin-ichi AKABAYASHI, Yasushi KONDO, Ko HASEGAWA
Article type: Article
Session ID: E-35
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper measured the fundamental data for clarifying required ventilation rate in the house kitchen with the IH cooking heater. We investigate about the characteristic of the ascending air flow above the IH cooking heater. As results, the required ventilation rate in the two range of IH cooking heater is about 150m^3/h.
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Yukiko Abe, Yasushi KONDO, Shin-ichi AKABAYASHI, Ko HASEGAWA
Article type: Article
Session ID: E-36
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this paper, indoor environment of kitchens is simulated by using CFD and the required ventilation for IH cooking heater is studied based on the results of experiment and CFD. In the CFD, the distributions of the airflow, temperature and humidity in the typical kitchen are analyzed, and then Direct Capture Efficiency of exhaust hood is evaluated. In the study of the required ventilation rate for IH cooking heater, it is supposed that indoor humidity in kitchens with IH heater should be same as in kitchens with gas range.
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Shunsuke OGITA, Yasushi KONDO, Hajime YOSHINO, Satoko ADACHI
Article type: Article
Session ID: E-37
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In working spaces, such as commercial kitchens, it is very important to remove the contaminants and heat are generated from cooking, to keep air quality healthy in occupied zones. Displacement Ventilation System is applied to one of efective method in such condition, therefore it has been widely used in Europe recently. However it is difficult to apply this system, due to area of floor and wall is small in Japanese commercial kitchens. In this paper, three types of commercial kitchens were modeled and simulated by CFD simulation, i.e. kitchens for European, Japanese and Chinese restaurants were modeled in case 1, 2 and 3 respectively. In addition, the results of CFD simulation were evaluated index of ventilation efficiency e.g. DCE and EMV.
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Koichi NISHIKAWA, Toshiaki OMORI, Masamutsu AZUMA, Kaori KOYA
Article type: Article
Session ID: E-38
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Airflow in commercial kitchens is very complex. Not only such factors as air conditioning, ventilation, effluent produced by the cooking process but also interaction with a neighboring room strongly influence the airflow and indoor environments. In this paper, the airflow behavior is analyzed in detail by coupled simulation of convection and radiation for a model kitchen. Airflow rate analysis which relates each inlet with each outlet helps greatly to design the kitchen ventilation system.
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Hidenari HIASA, Yasuyuki SHIRAISHI, Saburo MURAKAWA, Nobuyoshi KIYOTA, ...
Article type: Article
Session ID: E-39
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this paper, the indoor thermal environment of the kitchen with the ceiling ventilation system in all electrical center of providing school lunch was examined by the CFD analysis. The accuracy of the simulations was verified by the comparison of the air temperature results of measurements and simulations, and the distributions of airflow, temperature and relative humidity were examined under the supply air treated with the outside air treatment unit.
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Kazuhiro KAMIYA, SHUNITI Ishizuka, Hiromi KOMINE, Kazuya ITO, Kazuhiro ...
Article type: Article
Session ID: E-40
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The ventilation performance such as contaminant collection efficiency or intake air-conditioned air volume of the kitchen ventilation systems of spot exhaust range hood or the exhaust range hood with make up air for restaurants suited to electromagnetic cooking ranges were confirmed in full-scale experiment. These range hoods were trial manufactures based on CFD result. It was clarified that the hood collected contaminant efficiently under less exhaust air volume compared with ordinary canopy hoods and the exhaust range hood with make up air reduced intake air-conditioned air volume under the same condition.
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Yoshiyuki UEMURA, Saburo MURAKAWA, Daisaku NISHINA, Nobuyoshi KIYOTA, ...
Article type: Article
Session ID: E-41
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This research focused on an all electrical center of providing school lunch. The purpose is to grasp the relation between the use and energy consumption of kitchen equipments, and to examine the difference in characteristics of energy consumption of kitchen equipments among centers of providing school lunch. By investigating energy consumption at four centers that are different in the number of meals provided and main kitchen equipments.
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Kunihiko KINTSU, Saburo MURAKAWA, Daisaku NISHINA, Nobuyoshi KIYOTA, N ...
Article type: Article
Session ID: E-42
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This report shows the results of analyses on the use of kitchen equipments, from the viewpoint of time series. It is found that the use of kitchen equipments, such as starting and stopping time of equipments, time length of operating and so on, depends on the configuration of equipments in each center. Based on cumulative frequency distribution, some kinds of kitchen equipments have characteristics that they are almost never used with high output power at the same time.
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Hideyuki TSUJI, Koichi NISHIKAWA
Article type: Article
Session ID: E-43
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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It is important that ventilation system for commercial and residential kitchen is designed to remove vapor, smoke and grease produced by the cooking process. Ventilation efficiency of ventilation system is one of the indexes for evaluating the conditions of kitchen. In this paper, ventilation efficiency is measured for making the comfortable commercial kitchen using simple kitchen composed the gas range and range hood. The position and kind of gas range and range hood are very important fact for increasing the ventilation efficiency.
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Ryuya MATSUOKA, Takaharu KAWASE, Wataru YAMAGISHI
Article type: Article
Session ID: F-20
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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This study aims at the development of cheap and simple way to measure energy consumption of office appliances by using button-shaped thermosensor. As appliances give off heat at the time of energizing, we pasted a button-shaped thermosensor on an appliance to record the rise in temperature. Button-shaped thermosensors were installed on various appliances, and it confirmed that operating conditions could be distinguished with most appliances as a result of analyzing the records.
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Takaharu KAWASE, Yugo YAGITA
Article type: Article
Session ID: F-21
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Recent office buildings adopt 40-50W/m^2 as a design capacity of the outlet electric power, and the capacity of the air-conditioning equipment is often decided as 50-100% of this outlet capacity. Though this numerical value is growing big in accordance with the progress of office automation, there is an opinion of whether this value may be made small, because saving energy of the office automation equipments has proceeded recently. There are few materials to judge the validity of this numerical value. It is very important to know the actual condition of the amount of energy consumption of the office automation equipments which becomes equally to or exceeds lighting electric power.So we investigated the electric power consumption of the outlets of a multi-tenant tall building.
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Kazuhiko SAITO, Yukiko OYAMA, Tomoaki TSUCHIYA
Article type: Article
Session ID: F-22
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Though many school buildings have been completely air-conditioned in recent years, there are few data on the energy usage in school. In this research, to recognize the actual energy consumption in high school, the volume of gas and water consumption is measured in two similar high schools. This paper reports the quantity of actual energy consumption and how the energy is used in these schools.
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Koichi TAKEDA, Saburo MURAKAWA, Daisaku NISHINA, Masato MIYOSHI
Article type: Article
Session ID: F-23
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The purpose of this study is to clarify the usage of commercial kitchen equipments and its energy consumption in the electrical kitchen. This paper describes the result of analysis on the energy consumption of the cooking equipments in the electrical kitchen of welfare facility for aged. As the results, the energy consumption by the varied equipments in the cooking purpose and its frequency was found. Moreover, especially for the breakfast menu ,the amount of work for the preparation was well considered to shorten the work time and to reduce the number of workers.
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SHINICHI YOSHIDA
Article type: Article
Session ID: F-24
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This Paper is the Introduction of the attestation system of Certified Commissioning Professional (CCP) in U.S., and proposal to the attestation system of the Commissioning Authority in Japan. There are about 5 parties who are doing the attestation as competent person Certified Commissioning Professional (CCP) in U.S., I do these the proposal to the attestation of Commissioning Authority that inserted the construction system of Japan in the consideration as the reference,
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Tetsuya ICHIKAWA, Hiroo IZUMIYAMA, Akira Oosakaya, Hajime ONOJIMA, Min ...
Article type: Article
Session ID: F-25
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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We report on the result of the investigation about the current state of the commissioning (Cx) process in Britain and United States, and compare the two countries, describe consideration. In Britain, the performance verification of a fragmentary equipment system when completing it is called Cx, and called Cx Management to manage. in total. The point to have to make a special mention of the Cx process in Britain is a point that the execution of Cx when building it is obligated. We should not forget the purpose of the Cx process is achievement of the purchaser demand by not fragmentary performance verification but the total management of the project.
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Hideki TAJIMA, Toshiharu BABA
Article type: Article
Session ID: F-26
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This Paper Reports One of Commissioning Information Communicate Tool Utilizing HACCP Method for many Food Factories. We Seem Commissioning Authority Would Necessary some Information Communicate Tool Possible as soon as. We Thinking That Tool at Construction Sight.
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Noriaki KATO, Masahiko IGARI, Toshihumi KOBAYASHI, Taichi MURATA, Genz ...
Article type: Article
Session ID: F-27
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The operation of HASP/ACLD/ACSS program has been improved remarkably by smart interface software that we have developed. Therefore, it is easier to evaluate of energy consumption amounts of air conditioning system. To make it use as a commissioning tool, we have simulated and estimated each cases for saving energy of real building.
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Akihiko YOSHIZAWA, Ryuuji YANAGIHARA, Yasue FURUTA, Katashi MATSUNAWA, ...
Article type: Article
Session ID: F-28
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In this study, initial commissioning (operational phase) has been continuously applied on trial following the commissioning process that we proposed last year. Based on the acquired knowledge through this experience, this paper reports the requisite work when commissioning process is applied to conventional construction process and the benefits of executing this work.
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Hideki YUZAWA, Katashi MATSUNAWA, Kouzo KOBAYASHI, Ryuuji YANAGIHARA, ...
Article type: Article
Session ID: F-29
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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FPT is an effective test that confirms Owner's Project Requirement. However, there is danger of causing the Project member confusion if the frame of FPT is not clarified. Moreover, if efficient operation is not done, it becomes a problem on cost-effectiveness. The frame of FPT and efficient operation are proposed in this paper.
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Akihiro SHIMIZU, Hirofumi OCHIAI, Ryuuji YANAGIHARA, Yasue FURUTA, Aki ...
Article type: Article
Session ID: F-30
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The previous paper (the 4^<th> report) proposes the frame of FPT and the technique to improve the efficiency. We conformed to the previous paper, and we tried FPT for the heat source system of T building that is an actual-construction project. We report it about a trial summary and an enforcement result of the FPT.
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Kenichi TAGAMI, Makoto OTA, Ryuuji YANAGIHARA, Yasue FURUTA, Akihiko Y ...
Article type: Article
Session ID: F-31
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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As being discussed by our fourth report (previous report), FPT is an important task during the Cx. In this report, we report on the finding regarding the FPT of air conditioning system which applied to the operation phase during post acceptance step, obtained by T building that is an actual construction project.
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Hirokazu TASHIRO, Isamu SUZUKI, Masahumi TERAWAKI, Ichirou OOMORI, Min ...
Article type: Article
Session ID: F-32
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The BA system of the Roppongi Hills Mori Tower is the large-scale multi-vendor open network system. As the benefits of using open network system, the example of BEMS which evaluates energy-saving, and commissioning (performance verification) of automatic control is introduced. This paper describes analysis energy-saving effect based on the actual operation data for one year.
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Kuniharu SASAKI, Tomoaki SATO, Kenji FUJINO, Hiroki SATO, Takeshi WAKI ...
Article type: Article
Session ID: F-33
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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N building is a skyscraper in the center of a city. N building has the Building Energy Management System(BEMS) which was designed based on the concept of "Free Format" and "Reduction of Engineering Work". This paper reports the performance of the Co-generation, free cooling, and large temperature-different system, which evaluated by using the BEMS.
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Naoki AIZAWA, Takeshi WAKINO, Kuniharu SASAKI, Kenji FUJINO, Masashi T ...
Article type: Article
Session ID: F-34
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The building management system of the N building has operating data acquisition and analysis function so that the building system could be operated effectively. The simplified calorie calculation system is included in the management system. It consumed calorie that is calculated simply from the temperature difference between supply and return water at air-handling equipments and open-ratio of the valves. It is confirmed that the simplified calculation is sufficient to understand change of the cooling/heating calorific value and energy consumption for air-conditioning in building.
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Hiroki SATO, Makoto TACHINOOKA, Kuniharu SASAKI, Kenji FUJINO, Masashi ...
Article type: Article
Session ID: F-35
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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N building has some studios.The following one was introduced as an energy conservation technique of the air-conditioning system of the studio.It was control by inverter,cooling with outdoor air,control of introduction to outdoor air by CO_2 sensors.The data of the BEMS system was used, and the energy conservation of the air-conditioning system was evaluated.
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Katsuki MAEHARA, Noriyasu SAGARA, Song-ki SONG, Yuji ASADA
Article type: Article
Session ID: F-36
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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To verify if energy performance estimated in a design phase could be actually realized for HVAC systems in a complex building with offices completed a year ago, we investigated thermal characteristics of heat source equipment for a heating season. Then we carried out some simulations with regression equations for thermal efficiency of heat source equipment obtained through the analyses and examined how the difference of each thermal capability of source equipment divided into two sets and the control strategy of those affected the energy consumption for heat source systems with the primary pumps for a heating season.
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Kitarou MIZUIDE, Hisaya ISHINO, Kimiko KOHRI, Akihiro NAGATA, Tatsuo N ...
Article type: Article
Session ID: F-37
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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With regard to "Sakai Gas Building" located in the central part of Sakai city, we are at the stage of verifying whether its air conditioning system functions properly and achieves the energy saving and reduction of loads on environment as intended. The air conditioning system is featured by the system composed of under-floor air conditioning and natural ventilation in combination and equipped with ceiling fans. After the completion of the building, field measurements were carried out to confirm the actual effect the system achieved during the operation of the building. We will report the field measurements results and actual results confirmed so far.
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Yutaka SATO, Hisaya ISHINO, Kimiko KOHRI, Akihiro NAGATA, Tatsuo Nagai ...
Article type: Article
Session ID: F-38
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper discussed on the indoor thermal environment controlled by selecting the best of five operation modes of hybrid air-conditioning with natural ventilation and ceiling fan operation. The natural ventilation rate and cooling rate due to natural ventilation were estimated through the analysis of the measured values.
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Yumiko KODA, Hisaya ISHINO, Kimiko KOHRI, Akihiro NAGATA, Tatsuo NAGAI ...
Article type: Article
Session ID: F-39
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In Japan, with a terribly hot and humid climate in summer, the dehumidification is one of the important factors in maintaining thermally comfortable environment. Therefore, a desiccant air conditioner may be a very effective means for thermal comfort. "Sakai Gas Building" has a desiccant air conditioner utilizing the waste heat and we've taken measurement about the fresh air preconditioning system including the desiccant air conditioner. In this paper, we report the measurement results, and also evaluate the energy saving effects of several fresh air preconditioning systems quantitatively.
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Ryoko OKUMA, Hisaya ISHINO, Kimiko KOHRI, Akihiro NAGATA, Tatsuo NAGAI ...
Article type: Article
Session ID: F-40
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Thermal sensation of occupants are research in energy conservation Building with Hybrid Airconditioning by ceiling fan and natural ventilation. The results of questionnaire survey are obtained for the majority of occupants are satisfied with thermal environmental conditions. In summer, nine Subjects were exposed in a part of office to airflow of ceiling fan. it shows to get a feeling of the cooling effect by ceiling fan.
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Norio SHODA, Makoto KOGANEI
Article type: Article
Session ID: G-23
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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The results of measurements on the performance of a desiccant dehumidifier unit with solar air collectors are described. Room exhaust air is used to cool the 17% of the desiccant rotor area in this unit. Experimental results show that the amount of dehumidification was increased by 6% and the amount of energy to cool the air was decreased by 8% by using this rotor cooling process. Results also show that the outlet temperature of the solar air collectors in summer was more than 80℃ which is effective in regenerating the desiccant in this system and more than 50% of the thermal energy to regenerate the desiccant was supplied by the solar air collectors in a sunny summer day.
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Makoto KOGANEI, Shinsuke KATO, Ryozo OOKA, Norio SHODA, Yaw-Shyan TSAY ...
Article type: Article
Session ID: G-24
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Desiccant cooling system has been suggested to be a suitable system to improve IAQ (Indoor Air Quality) by its superior performance of humidity control, and decrease the health risk generated by mold growth. However, this system has a defect of its lower energy efficiency, so combining with power generation system, such as co-generation system, is commonly used to improve its energy efficiency. The purpose of this research is to realize a non-condensing environment by developing a non-condensing air-conditioning system (a HVAC system without condensation both in the indoor environment and inside the cooling system with high energy efficiency). In this paper, the authors studied the possibility and methods of combining desiccant cooling system with CO_2 heat pump that can improve its energy efficiency and provide steady heat source.
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Koichi KAWAMOTO, Shinsuke KATO, Ryozo OOKA, Aaw-Shyan TSAY, Kousaku NI ...
Article type: Article
Session ID: G-25
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The purpose of this research is to develop a non-condensing air-conditioning system (a HVAC system without condensation both in the indoor environment and inside the cooling system) by using desiccant cooling system. In the previous study, this system was studied by experiments carried out in early summer days. In this paper, the authors study the adaptability of the system under mid-summer climate, and evaluate the performance of thermal comfort, IAQ (Indoor Air Quality) and energy efficiency by experimental data and performance data of CO_2 heat-pump.
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Yaw-Shyan TSAY, Ryozo OOKA, Shinsuke KATO, Makoto KOGANEI, Norio SHODA ...
Article type: Article
Session ID: G-26
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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The purpose of this research is to realize a non-condensing environment by developing a new air-conditioning system with high performance of humidity control. And the development of simulation tool with heat and humidity prediction is considered to be important for this research. A simulation model that assumes indoor temperature and humidity to be uniform was wildly used in the past. However, it's difficult to simulate the contribution of temperature and humidity inside the room space by using this model. In this paper, the authors studied a new developed CFD simulation model applied in a room space of hotel.
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Toshihiko ISHIZAWA, Takashi SHIMURA, Yasuo IGUCHI, Kunio MIURA
Article type: Article
Session ID: G-27
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper will report the outline of "Development of energy conservation system by separating dehumidification in air-conditioning". This system is the air-conditioning technique by separating dehumidification which is applied to an office building, and the equipment which unitized the whole of the system is developed. And Energy can be saved maintaining the high-quality thermal environment.
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Takashi SHIMURA, Yasuo IGUCHI, Toshihiko ISHIZAWA, Kunio MIURA
Article type: Article
Session ID: G-28
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper will report the operation flow of "Development of energy conservation system by separating dehumidification in air-conditioning". Six operating patterns are programed by using PLC (Plogramabl Logic Controler). The experimental facility which unitized the whole of the system is instoled in part of own company office, and enrgy consumption will be compared with the existing facilitiy.
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Masaaki SHINOHARA, Toshihisa SHIMIZU, Jun OOSHIMA
Article type: Article
Session ID: G-29
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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For the heat recovery from the exhaust that includes smell and poisonous substance, we developed the highly effective total heat exchanger using air washer that the exhaust air doesn1t contaminate supply air. In the process of development, it was clarified that the heat exchange performance of the air washer improved by installing the heat exchange media. Moreover,it was confinned that the circulation volume of water can be decreased to L/G=0.8. This total heat exchanger can be operated on the average by the system efficiency of about 50%.
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Koji HAMA, Kazutoshi KUSAKARI, Kazuyuki KOBAYASHI
Article type: Article
Session ID: G-30
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper reports the heating environment and its evaluation in operation of various types of heating system in the living room with a "hukinuke kukan (well hole)" (area 60m2, height 5.7) of the house of which insulation efficiency meets the next generation energy-conservation standard.
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Koki KIKUTA, Masamichi ENAI, Hirofumi HAYAMA, Taro MORI
Article type: Article
Session ID: G-31
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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In this research, we suggest the thermal storage heating and cooling systems consisting of piping laid under the ground as a rational technique of heating and cooling systems for external insulated RC office buildings. The aims are to evaluate the indoor thermal environment and to clarify the optimum control techniques at the time of introducing the thermal storage systems that consider the effects of high insulation and thermal storage in buildings. As the control of this system, we suggest not fixed control based on correspondence with every hour but simplified predictive control based on correspondence with every season, and verify the usefulness of this system.
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Yasunobu TANAKA, Yoriyuki TORIGOE, Shiro TSUKAMI, Yasuhisa MIYAZAKI
Article type: Article
Session ID: G-32
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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We used the external thermal insulation walls at the hospital in the cold district, and we measured the temperature of the building frame and the thermal environment of the hospital room. We described the observation results in winter in the second report. This time, we will describe the thermal environment of the sickroom in summer, and the all-year temperature change of the walls.
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Masato MIYOSHI, Saburo MURAKAWA, Daisaku NISHINA, Hiroshi TAKATA
Article type: Article
Session ID: G-33
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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It is necessary to save energy for environment. The purpose of this study is to clarify the accurate energy consumption in the welfare facility for aged. The measurements of energy consumption were carried out in two welfare facilities, T facility used the electricity and S facility used the gas as a heat source. The primary energy consumption units were shown to compare the energy consumptions of two facilities.
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Kenzo SUZUKI
Article type: Article
Session ID: G-34
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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We investigated how air conditioners were used in thermal insulated housings in Kyoto city, Aidu-Wakamatsu city and Kitami city. In Aidu-Wakamatsu, the proportion of their continuous cooling was high, and they often repeated operation and stop over the range of their inverter due to the low performance operation. We found that COP might fall below 2 on the low performance condition by our study of the relationship between the load factor and COP using our simple experimental device.
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Kazunori MATSUMAE, Shin-ichi KAGIYA, Takashi AKIMOTO, Yasuo KUWASAWA
Article type: Article
Session ID: G-35
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Measurement of indoor thermal environmental condition in houses where residents are living has been performed. Vertical air temperature difference in a living space was measured with EHP and floor-heating system respectively in the same house. As the result of the comparison of the energy consumption, it has been found that the EHP is slightly less energy consumed than the floor-heating system. However, the vertical air temperature difference is very small with the floor-heating system. The uniformed vertical temperature distributions with floor-heating system have been also observed in various types of houses from a timbered house to high air-tight and high insulated houses included apartments.
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Hiroyasu SUZUKI, Shin-ichiro NAGANO
Article type: Article
Session ID: G-36
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper is reported about the measurement data of two food stores by use of kerosene heat pump (KHP) to air-conditioning systems in Hokuriku District (Ishikawa prefecture). The fluctuation of air-conditioning supply inlet temperature has a few difference between two stores in summer and is resemblance between two stores in winter. The power consumption data shows a great difference between two stores.
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Shin-ichiro NAGANO, Hiroyasu SUZUKI
Article type: Article
Session ID: G-37
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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This paper is reported about the measurement result of a food store equipped circulation fan on the ceiling. The perpendicular temperature distribution of the food store has a great difference between floor and ceiling. The difference show 9.1 ℃ in summer and 11.1 ℃ in winter at measurement point 2. The circulation fan becomes small the difference of perpendicular temperature.
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Hiroaki MIYAKE, Manabu KISHITA, Tsuneo UEKUSA
Article type: Article
Session ID: G-38
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
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Different types of airflow systems for a data center are compared in a real scale experimental room. As a result, underfloor air supply overhead return system could make maximum inlet air temperature of the equipments lowest and therefore remove the heat exhaust from the room most effectively. We also found that in the horizontal return system, the height of the ceiling considerably affects thermal environments of the servers.
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Manabu KISHITA, Hiroaki MIYAKE, Tsuneo UEKUSA
Article type: Article
Session ID: G-39
Published: July 25, 2005
Released on J-STAGE: August 31, 2017
CONFERENCE PROCEEDINGS
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In regards to a data center, since the effects of service stoppages on society are severe, it is important to maintain the thermal environment around devices mounted in server racks. This paper describes about airflow and thermal environment around a rack at a data center. We measured temperature, airflow rate, and flow direction under laboratory conditions. We evaluated the degree of influence of these factors on the intake temperature of devices mounted in a rack.
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