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Featured researches published by Kouji Sakai.


Building and Environment | 2001

A simulation of an underground heat storage system using midnight electric power

Kouji Sakai; Osamu Ishihara; Kengo Sasaguchi; Hiroyuki Baba; Takamitsu Sato

Abstract The purpose of this study is to investigate how much the peak daytime demand for electricity is reduced by an underground heat storage system that uses surplus electricity during the nighttime. In this paper, we report on a numerical simulation method and the results from an energy performance simulation of this system at Park Dome Kumamoto, a Kumamoto Prefectural indoor athletic facility. The simulation results were in good agreement with the measurements, and that shows that this simulation method is applicable for the prediction and optimization of an underground heat storage system for other conditions.


Journal of Architecture and Planning (transactions of Aij) | 2001

STUDY ON ESTIMATION OF ENERGY CONSUMPTION FOR DIFFERENT USES IN DWELLING

Akio Tanaka; Kouji Sakai; Hidetoshi Nakagami; Chiharu Murakoshi; Osamu Ishihara


Journal of Architecture and Planning (transactions of Aij) | 2002

A STUDY ON THE CALCULATION STABILITY OF SIMPLEC ALGORITHM ON THE INDOOR/OUTDOOR ISOTHERMAL FLOW FIELDS

Kouji Sakai; Shizuo Iwamoto; Takashi Kurabuchi; You Matsuo


Journal of Architecture and Planning (transactions of Aij) | 1997

A STUDY ON THE AIR DISTRIBUTION AND THERMAL PERFORMANCE OF VENTILATED AIR LAYER IN THE AIR CIRCULATION WALL BY USING OUTSIDE THERMAL INSULATION SYSTEM

Osamu Ishihara; Kouji Sakai; Misako Tajima; Kiyomi Kamimori


日本建築学会研究報告. 九州支部. 2, 環境系 | 2002

Study on the actual result of employment of PV generation systems for residential houses of the Kyushu area : Part.5 The actual result of power generation of the system in Kyushu area

Osamu Ishihara; Hidetoshi Nakagami; Kouji Sakai; Akio Tanaka


日本建築学会研究報告. 九州支部. 2, 環境系 | 2002

A Study on the Effectiveness of Ice Thermal Storage System Using Midnight Electric Power : Part4. Results of Measurement in Summer Season and Estimates of the Efficiency of Storage System

Kenji Takahama; Osamu Ishihara; Kouji Sakai; Yoshiyuki Baba


Journal of Architecture and Planning (transactions of Aij) | 2002

A STUDY ON REDUCTION EFFECT OF CHEMICAL SUBSTANCE EMISSION RATES FROM BUILDING MATERIAL BY USING BAKE-OUT

Kousuke Noda; Kouji Sakai; Osamu Ishihara


太陽/風力エネルギー講演論文集 = Proceedings of JSES/JWEA Joint Conference | 2000

Study on the estimations for grid-connected PV generation systems for residential houses Part.3 An estimation of the influence of module temperature fluctuation for PV generation

Kouji Sakai; Osamu Ishihara; Toshiko Shimizu; Akio Tanaka; Hidetoshi Nakagami


Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services | 2000

A Study on calculation stability of SIMPLE Algorithm : Comparison in the 2-Dimensional Isothermal Flow Field

Kouji Sakai; Shizuo Iwamoto; Takashi Kurabuchi; Yoh Matsuo


Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services | 1999

A Study on Thermal Performance of Athletic Stadium : Part 2 Measurement Results of Athletic Stadium

Kouji Sakai; Osamu Ishihara; Yasuhiko Kin

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Takashi Kurabuchi

Tokyo University of Science

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