Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan
Online ISSN : 2424-0486
Print ISSN : 0385-275X
ISSN-L : 0385-275X
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Volume 31, Issue 116
Displaying 1-19 of 19 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    2006 Volume 31 Issue 116 Pages Cover1-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_Cover1
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Article type: Cover
    2006 Volume 31 Issue 116 Pages Cover2-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_Cover2
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App1-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App1
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  • [title in Japanese]
    Article type: Index
    2006 Volume 31 Issue 116 Pages Toc1-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_Toc1
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App2-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App2
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App3-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App3
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App4-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App4
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App5-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App5
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App6-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App6
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App7-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App7
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    Download PDF (78K)
  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App8-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App8
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  • Study on Cooling Effect by Water Film Formation on Transparent Exterior Surface Coated with Super-Hydrophilic Photocatalyst
    Hiroshi NAGANUMA, Masamichi SATO, Haruhisa SYUDO, Tatsuo OKA, Hideyuki ...
    Article type: Article
    2006 Volume 31 Issue 116 Pages 1-10
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_1
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    On the passive solar system that was composed of transparent wall, the cooling effect that was acquired by creating water film on the exterior surfaces was measured and verified by prediction formula in consideration of interreflection. On the experiment, the greenhouse with water film that consisted of transparent wall with the super-hydrophilic photocatalyst and the one without water film were built, the cooling effect was confirmed by comparison between various data on two experiment models. Moreover the prediction value was calculated by prediction formula that was taken interreflection into consideration and arranged the conservation equation of greenhouse energy and the heat balance equation on the exterior wall surfaces that were reported by the present. The result can be summarized as follows: Comparison of the experimental data with the prediction data that was calculated by the arranged prediction formula and some constants that were obtained through the experiments under the various weather conditions indicated good agreement. (i) The evaporation cooling effect of creating water film on the exterior wall surface with the super-hydrophilic photocatalyst was determined quantitatively. (ii) Measurements showed that the coefficient of heat transfer could be set as one constant. Therefore heat balance equation could be calculated, the exterior surface temperature and the amount of evaporation could be predicted easily. (iii) The experimental result has demonstrated that the latent heat of water film on the exterior wall surfaces occupied from 18 to 32% heat radiation of experimental model at daytime.
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  • A Study on the Separated Demand of Total Electricity Power Consumption in Terms of the Use of Air-conditioning in College Campus
    Xuehai XIA, Tetsuo YAMASHITA, Yasuhiro NAKAMURA
    Article type: Article
    2006 Volume 31 Issue 116 Pages 11-19
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_11
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    To level the power demand is an important way of lowering the real cost of power consumption as the contracted demand of power at every business company, including that of universities, can be reduced. It is necessary to know the situation of electrical consumption at any particular period of time (during any season) whether air-conditioning is in constant use or is conversely, in little or no use, in order to perform power demand leveling. Few business companies separately measure power demands for the frequrent or infrequent use of air-conditioning which leads to the fact, that, in most cases, only the quantity of total power demand can be clearly known. In this study, by focusing on the relations between the quantity of total power consumption and the change of air temperature, the authors have analyzed in detail the correlation of power consumption at any particular unit of time when air-conditioning may be in use, and the relevant air temperature.
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  • Study on the Characteristics of Metal Hydride Tanks in Totalized Hydrogen Energy Management System
    Yoshiaki KAWAKAMI, Hideyuki OKAMOTO, Atsushi TAKAHASHI, Hiroshi ITO, T ...
    Article type: Article
    2006 Volume 31 Issue 116 Pages 21-30
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_21
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    We proposed the totalized hydrogen energy management system (THEM-System) that consists of a fuel cell device, a water electrolysis device, metal hydride tanks and their auxiliary devices. Aiming at introducing this system into actual fields, we have examined the simultaneously effective uses of electricity, hydrogen and cold heat, by 5kW (fuel cell power)-class test system that have been using for investigating the energy performance of the system and the operational characteristics of the devices. This paper presents the developed numerical analysis model of metal hydride tanks by which it is possible to realize the high performance as for hydrogen, metal hydride and cold heat. In our model analysis, the distributions of pressure, temperature and hydrogen content within the tanks can be calculated on both operational conditions of charging and discharging of hydrogen. From the comparison between calculated results and experimental results, it has been confirmed that the numerical analysis calculation can estimate reasonably the dynamics of the metal hydride tank in the 5kW-class system, and moreover, it has been confirmed that by using this model, the structure and the operation conditions of metal hydride tanks can be designed rationally for the THEM-System.
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  • Study on the Drainage Performance Evaluation and Design Method of Horizontal Drainage Pipe Systems for SI (Support & Infill) Housing : Part 6-Proposal of the completion of the drainage performance evaluation method and its practical application
    Masayuki OTSUKA, Kazuhiro SHIGETA, Yusuke MINAMI, Hiroshi SAKO, Noriyu ...
    Article type: Article
    2006 Volume 31 Issue 116 Pages 31-41
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_31
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    This study has been carried out focusing on the drainage performance evaluation and design method of the header-type horizontal drainage pipe system for SI (Support and Infill) housing through various experimental work. At first, this report summarizes the study, consolidates the findings and actual examples that were stated in the previous reports, and proposes the completion of the two drainage performance evaluation methods. One is for laboratory experiment and another for actual SI housing. This report also examines and discusses thoroughly how drainage performance evaluation is affected by different pipe gradients, which are important factors in installing pipework, by using the abovementioned methods. Finaly, the validity of the drainage performance evaluation method using the laboratory experiment was discussed based on field experimental work.
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  • The Influences of Surface Area and Circulation Flow Rate of a Flat Plate Solar Water Heater on the Performance of a Solar Driven Adsorptive Desiccant Cooling System
    Akio KODAMA, Masashi OHKURA
    Article type: Article
    2006 Volume 31 Issue 116 Pages 43-49
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_43
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    A solar powered desiccant cooling process is one of the environmentally friendly cooling processes since the heat energy is supplied from solar collectors. Its cooling/dehumidifying performances are complicatedly influenced by solar irradiation, ambient humidity and operating parameters. This paper discusses the results of the field test of a solar driven desiccant cooling system, focusing on the influence of surface area of the solar water heater under several values of solar irradiation and circulating water flow rates. The desiccant cooling system has a 1.2m diameter desiccant rotor and handles 4000m^3/h of air. Its cooling/dehumidifying performance at the surface area of 60m^2 was acceptable even in unstable solar condition since the large amount of thermal energy accumulation in the circulating water prevented fluctuation effect due to solar irradiation. On the other hand, cooling performance obtained for the smaller surface area decreased due to the unstable solar irradiation (under 0.5kW/m^2). It was found that surface area of at least 60m^2 was required to obtain sufficient dehumidifying performance. Furthermore, it was considered that larger surface area or the use of other type solar collector was required to remove latent heat load of the indoor room. Although higher water temperature was achieved in slower flow rate of circulating water, dehumidifying performance could not be increased due to approximately equal amount of heat supplied to the cooling process. In such case, adjustment of the specification of air heater to flow rate of the circulating water was required.
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  • Study on Non-Condensing Air-Conditioning System for Next Generation : Part 2-Study on the Practicality in Adapting the CO_2 Heat Pump Combined System for Outdoor Air Conditioning System
    Makoto KOGANEI, Shinsuke KATO, Ryozo OOKA, Yaw-Shyan Tsay, Norio SHODA ...
    Article type: Article
    2006 Volume 31 Issue 116 Pages 51-57
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_51
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    The purpose of this study is to realize a non-condensing environment by developing a new type of desiccant air-conditioning system with lower energy consumption. In this paper, the authors studied several types of desiccant air-conditioning systems which are combined with CO_2 heat pumps, and the systems are considered to be adapted as outdoor air conditioning systems in hotel buildings. The overall energy efficiency of the proposed systems (the combined system) is compared with those of the conventional outdoor air-conditioning systems. The results show that the system COP of the proposed systems has a value of 2.1〜2.2, which is less than the conventional air-conditioning system with a total heat exchanger, but is a very substantial increase in energy efficiency compared with a conventional desiccant cooling system and a conventional outdoor air-conditioning system under the conditions of no-condensing inside the indoor cooling units.
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  • [title in Japanese]
    Article type: Appendix
    2006 Volume 31 Issue 116 Pages App9-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_App9
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  • [title in Japanese]
    Article type: Cover
    2006 Volume 31 Issue 116 Pages Cover3-
    Published: November 05, 2006
    Released on J-STAGE: September 05, 2017
    DOIhttps://doi.org/10.18948/shase.31.116_Cover3
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