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Masato KATO, Hitomi TSUTSUMI, Yuhua CHEN, Yusuke TANAKA, Daisuke KATAH ...
Article type: Article
Session ID: H-8
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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In order to clarify the effects of relative humidity on human comfort and productivity under transient conditions in summer, subjective experiments were conducted. In Chamberl, subjects were exposed to the condition of 30℃/70%RH for 15 minutes. In Chamber2, subjects were exposed to 4 different humidity conditions for 180 minutes, performing simulated office work. For all conditions, SET^* was kept constant at 25.2℃. Subjects reported more pleasant at 30%RH and 40%RH than at 50%RH and 70%RH. Skin wettedness on left chest declined more at low relative humidity. Under transient conditions, the change of skin moisture at 30%RH and 40%RH showed the same tendency throughout the exposure time. Though significant differences in the task performance among conditions were not found, total rate of complaints at 70%RH was higher than any other conditions.
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Shizuka HORI, Shuzo MURAKAMI, Yoshihisa HIRAYAMA, Takeo TAKAHASHII, Ts ...
Article type: Article
Session ID: H-9
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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The purpose of the study is to find out the effect of the radiation panel on the comfort and the load reduction for the open type house in hot and humid region as Tokyo. Indoor environment of the open type house, which was built at Tokyo, is clarified by measurement and using numerical analysis through the year. This paper focuses on thermal environment using radiation panels at the open type house. It was sensitive to outdoor air temperature, and PMV was -0.7〜-0.1 by using radiation panels.
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Mine SUDO, Shuzo MURAKAMI, Shinsuke KATO, Doosam SONG
Article type: Article
Session ID: H-10
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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In this study, a personal air-conditioning system considering the human thermal adaptation is analyzed. In an office, the thermal environment doesn't change strikingly. Therefore changing of activity affects well the thermal comfort. Here we define response time as the time to ease thermal stimulus due to change of activity by the personal AC. In this paper, we examine response time by subjective experiment. As the result, thermal discomfort with walking exercise is eased within 5 to 10 minutes under the personal AC. But, after further 2-3 minutes, subjects feel discomfort because of dry eyes or cold.
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Shengwei Zhu, Doosam Song, Shinsuke Kato, Jeong-Hoon Yang
Article type: Article
Session ID: H-11
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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In this paper, the thermal alleviation effect of the spot personal air-conditioning system was examined by subject experiment. Changes of the subjects' skin temperature, thermal sensation, and thermal comfort were recorded during the experiments. The results indicate that the personal air-conditioning with an outflow of 4m/s has a great effect on thermal alleviation, and it is little influence on improving its thermal alleviation effect by decreasing the temperature of outflow. Moreover, compared with the previous experimental results, it indicates to be efficient to improve the thermal alleviation effect of the personal air-conditioning by increasing the velocity of its outflow.
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Noriaki YAMAMOTO, Shintaro YOKOYAMA, Kazumi SHIMAKURA
Article type: Article
Session ID: H-12
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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We are planning to develop the work evaluation system using our thermal physiological and psychological prediction model. This paper describes the results of measurement of physiological and psychological data that were measured in experiments simulated landing in winter surface water and standing position work on the coast, and a comparison of experimental and calculated result of body temperature about in surface water. The calculated results agree well with the experimental results. In addition, the calculated results supposing the accident of landing in actual winter surface water are described.
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Asako TANAKA, Naoe NISHIHARA, Masaoki HANEDA, Hajime ONOJIMA, Shin-ich ...
Article type: Article
Session ID: H-13
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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As an application of network technology, the indoor environmental control system using the open-network has been developed and has began to put into practice. Collecting occupants' requests via networks to reflect on the control of building equipment can be proposed for an effective use of such system. A survey has taken place to investigate on the productivity in a meeting room at two types of ventilation condition: average carbon dioxide (CO2) concentration of 1239ppm condition and 677ppm condition. The method of collecting a large quantity of requests through network system is efficient for further improvement of office environment.
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Daisuke KATAHIRA, Takashi AKIMOTO, Yasuo KUWASAWA, Yutaka TOCHIHARA, K ...
Article type: Article
Session ID: H-14
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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The subjective experiment was conducted in highly airtight and insulated rooms, where floor heaters and air-conditioners were installed. Rooms were designed to follow 'the next-generation energy conservation standards' and 'the new energy conservation standards' in Japan. For each of floor heating and air-conditioner tests, three air temperature conditions were applied. It was found that vertical temperature gradient was smaller for floor heating conditions. There were more subjects who wanted to have floor surface temperature been higher in floor heating conditions compared to in air-conditioning conditions.
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Yoshiko OGAMI, Kazuo EMURA, Tadahiro TSUCHIKAWA, Teruyuki SAITO, Yutak ...
Article type: Article
Session ID: H-15
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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According to the previous paper, experiments covered female subjects for two hours under three different levels of air temperature for each of floor heating and air-conditioning system. Under the un-uniform distribution of air temperature in the room, the subjects felt unpleasantness because of decrease in the feet and the lower limbs skin temperature.
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Chitake KARAKI, Hideaki MATSUHASHI, Yutaka TOCHIHARA, Yujin SUNWOO
Article type: Article
Session ID: H-16
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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We are studying the influence of low relative humidity in humans. In last paper, we studied the influence of low humidity on physiological response of humans during prolonged sitting. In this paper, we investigated the effect of low relative humidity on physiological and psychological responses in heated environments. We measured Saccharin Clearance Time (SCT), Blinking Times, Heart Rate Variability (HRV), blood pressure, and skin temperature as physiological responses. And we asked thermal sensation, dryness and comfort sensation as psychological responses using questionnaire. SCT and Blinking Times showed no significant difference among three conditions of the relative humidity. But there were significant differences among the conditions of different humidity in dryness and thermal sensation.
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Yukie TSUNAKAWA, Tadahiko IBAMOTO, Hirokazu NAKAMURA, Kazutaka KURASHI ...
Article type: Article
Session ID: H-17
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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It is indispensable to perform improvement of air-conditioning technology and utilization as dealing with increase of the air conditioning load accompanying automation of the office expanded quickly in the construction equipment field of our country. This study aims at utilization of a higher temperature and cold air distribution system with variable airflow. It is thought that the person of the short time stay who came from outside and the non sweat peaple who remained in the room for long time can live together , and the energy can be saving by this system.
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Satoshi HASHIMOTO, Masaaki TERANO, Toshihiro SUGIURA, Masaharu NAKAMUR ...
Article type: Article
Session ID: H-18
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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Indoor environment affects productivity and health of building occupants. This paper discusses on a standard method of productivity assessment for investment judgment and effect certification of indoor environmental improvement in office workplace. First, recent studies are reviewed and requirements for standard method of productivity measurement are discussed. Next, a productivity measurement method based on the subjective assessment is explained. Some charts proposed by objective experiments are useful to increase the reliability of the measured results.
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Masaaki TERANO, Satoshi HASHIMOTO, Toshihiro SUGIURA, Hiroko MASUDA, M ...
Article type: Article
Session ID: H-19
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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Productivity has become popular in Japan as the new axis for evaluating office environment. However measurement methods for productivity are not clarified. One of the most popular methods is subjective evaluation that uses some questionnaires. In this paper, we suggested a new questionnaire as a standard type for measuring productivity. It has a particular architecture that considers occupant's motivation and productivity in terms of its cost.
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Tomonori SAKOI, Kazuyo TSUZUKI, Shinsuke KATO, Ryozo OOKA, Doosam SONG ...
Article type: Article
Session ID: H-20
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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Consideration was made on expression method of thermal sensation in non-uniform thermal environment. The authors conducted experiments in "front to back", "right to left" or "up to down" asymmetric thermal environments and obtained expression formulae of thermal comfort and discomfort in non-uniform thermal environment, considering distributions of skin temperature and sensible heat loss.
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kouei OBATA
Article type: Article
Session ID: H-21
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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In order to clarify the effects on comfort and productivity by keeping one's head cool and feet warm environment, a personal box was made to create the environment and subjective experiments were made. The temperature 24.5℃ near the head and 28℃ near legs were set. To clarify the effect of the environment, experiments were also made in the condition of the uniform temperature 25℃. As the result, Subjects felt comfortable at the both conditions. And also, working performance of the subjects was almost the same in the both conditions, but subjects felt less tired in the head cool and feet warm environment.
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Hiroyasu BABA, Shintaro YOKOYAMA, Noriaki YAMAMOTO, Katsunori NAGANO, ...
Article type: Article
Session ID: H-22
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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We have been developing a prediction computer program of whole body temperature to evaluate and control thermal environment. This paper, for the extension of our program applied to the cases under manned space flight and jet flight, describes about improvement of our program to the simulation of body temperature of aircraft performed before in consideration of metabolic heat generated by human activity change at the time of fling an aircraft accompanied straining maneuver and blood flow change by mental strain. We also report psychological evaluation of the flight crew using our predictive formulae of thermal sensation and comfort.
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Kayako HAMANAKA, Kazuyuki KOBAYASHI, Keiko Mutou, Tetsuo KATSUURA, Lu ...
Article type: Article
Session ID: H-23
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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This research aimed at clarifying comfort level of ceiling radiation cooling system by comparing with ordinary air condition cooling system. A series of comparative tests to measure and assess the differences of thermal condition indexes in the room, and subjective evaluation and physiological responses of persons tested at the times of artificial cooling by ceiling radiation cooling system and by ordinary air conditioner was conducted under the thermally comfortable environment. The results of the tests showed that air temperature in the room, and warm-cool sensation and inferior limb skin temperature of the persons tested by the ceiling radiation cooling system were slightly higher than those of by the air condition cooling system though the both tests were conducted under the same thermally comfortable conditions.
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Zhangxu, Linhuan, Wanglingfei, Hongwei Tan
Article type: Article
Session ID: IS-1
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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"TOP OF CITY", a high-class residential quarter in downtown of Shanghai, is equipped with regional energy supply system and also presents the service of cooling and heating air conditioning as well as the domestic hot water.According to the features of the buildings and customers of the project, the technical mode of regional energy supply is determined to embody the regional energy supply tactic with energy saving, environment protection, security and reliability.
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Dafa Ye
Article type: Article
Session ID: IS-2
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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VAV, a popular AC system in office buildings of North America and Japan, has been initial from Shanghai, widely used in China since mid of 1990 due to its feature of comfort, cleanness and energy-saving. In the year of 2000, Author has carried out a study upon some VAV system projects in Shanghai, and after four years, what is new? With great interest, recently Author makes a further investigation on 13 VAV system projects, which two largest comprehensive design institutes of Shanghai- East China Architectural Design& Research Institute(ECADI )and Shanghai Architect Design & Research Institute (SHADI )have been involved in designing. The results of study reveals something significant.
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MINSHEN SUN, LINGCAO XIA
Article type: Article
Session ID: IS-3
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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The National Grand Theater of CHINA is a cultural complex with three different entities including an opera house, a theater and a concert hall, which is being built near TIAN AN MEN Square as shown as Fig.1. Because of many rooms in the entities grouped together under a shell having no direct contact with the outside world, the year round cooling and free cooling by use of cooling tower in winter has been taken into consideration. The displacement ventilation technology for three auditoriums and CFD simulation of air distribution for the concert hall has been implemented. This paper shows the analysis and comparison of energy consumption in summer and winter for the typical mixing air supply and displacement ventilation, and year round cooling load for different operation strategy.
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Akira Okagaki, Ryuji Yanagihara, Toshimasa Hagiwara, Tadahiko Ibamoto, ...
Article type: Article
Session ID: IS-4
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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Kazuyuki OOHARA, Kitarou MIZUIDE, Masao KIMURA, Tatsuya YAMASHITA, Jun ...
Article type: Article
Session ID: IS-5
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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Hiroaki Takai, Takashi Ichihashi, Yukio Ohmiya, Akihisa Ishio, Masanor ...
Article type: Article
Session ID: IS-6
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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Kenji OKANO, Toshihiro SUGIURA, Takaharu KAWASE, Masayoshi FUNATSU, Ky ...
Article type: Article
Session ID: IS-7
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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Article type: Appendix
Pages
App1-
Published: August 20, 2004
Released on J-STAGE: August 31, 2017
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