TY - JOUR
T1 - Effect of humidity and small air movement on thermal comfort under a radiant cooling ceiling by subjective experiments
AU - Kitagawa, Koichi
AU - Komoda, Noriko
AU - Hayano, Hiroko
AU - Tanabe, Shin Ichi
N1 - Funding Information:
This paper is concerned with a part of a study that was carried out with the financial support for development in making practicable energy usage rationalization from the Agency of Industrial Science and Technology, the Ministry of International Trade and Industry of the Japanese Government.
PY - 1999/6
Y1 - 1999/6
N2 - Radiant air-conditioning systems are expected to be more comfortable and superior energy-saving systems than convective air conditioning ones generally used. There are some studies on radiant cooling systems. However, they were seldom put to practical use because of dew point problem in Japan. The objective of this study is to investigate the thermal comfort of local parts of the body and the whole body, in particular, including the effects of humidity (45% rh, 65% rh, 85% rh) and small air movements, by subjective experiments under a radiant cooling system. The experiments have been performed by using radiant cooling panels in a climate chamber. Subjects were seated on a chair under the radiant cooling panels, and voted their thermal sensation and comfortable sensation. The following results were obtained. Even in the radiant cooling system, the influence of humidity and small air movement on thermal sensation votes of the whole body could be correctly estimated by using a standard new effective temperature (SET*) within one scale error of thermal sensation. Small air movement with the radiant cooling system had a possibility of improving the comfortable sensation votes in the radiant cooling.
AB - Radiant air-conditioning systems are expected to be more comfortable and superior energy-saving systems than convective air conditioning ones generally used. There are some studies on radiant cooling systems. However, they were seldom put to practical use because of dew point problem in Japan. The objective of this study is to investigate the thermal comfort of local parts of the body and the whole body, in particular, including the effects of humidity (45% rh, 65% rh, 85% rh) and small air movements, by subjective experiments under a radiant cooling system. The experiments have been performed by using radiant cooling panels in a climate chamber. Subjects were seated on a chair under the radiant cooling panels, and voted their thermal sensation and comfortable sensation. The following results were obtained. Even in the radiant cooling system, the influence of humidity and small air movement on thermal sensation votes of the whole body could be correctly estimated by using a standard new effective temperature (SET*) within one scale error of thermal sensation. Small air movement with the radiant cooling system had a possibility of improving the comfortable sensation votes in the radiant cooling.
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U2 - 10.1016/S0378-7788(98)00086-3
DO - 10.1016/S0378-7788(98)00086-3
M3 - Article
AN - SCOPUS:0032638825
SN - 0378-7788
VL - 30
SP - 185
EP - 193
JO - Energy and Buildings
JF - Energy and Buildings
IS - 2
ER -