Open AccessExperimental Study on Indoor Thermal Environment of Capillary Radiant Cooling Based on Different Installation Methods
Author(s) -
Ze Dong Yu,
Nan Li,
Xiaoqian Hu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/474/5/052102
Subject(s) - radiant cooling , environmental science , mean radiant temperature , thermal , drop (telecommunication) , materials science , capillary action , operative temperature , water cooling , thermal comfort , radiative cooling , radiant heating , nuclear engineering , mechanics , meteorology , thermodynamics , mechanical engineering , composite material , physics , engineering , geology , oceanography , climate change
The paper, taking the room of an office building as an example, makes a comparison on the changes of response, indoor temperature field and cooling surface temperature between the capillary radiation cooling ceilings and walls at 16 °C and 18 °C through the experimental study. The results show that: 1) when the water supply temperature is set to 16 °C and 18 °C, the indoor temperature can meet the design requirements when the system works stably. 2) No matter what types of radiant cooling is used, the indoor temperature drop rate increases with the decrease of water supply temperature. In the height range of 0.7m to 1.5m from the ground, the temperature drop rate of radiant cooling ceilings is 1.8-2.4°C/h, and that of radiant cooling wall is 0.8-1.1°C/h. 3) When the system reaches the stable phase, the wall cooling system presents a state of “lower cooling and upper heating”, and the radiant cooling ceilings presents a state of “upper and lower cooling, middle heating”, but the horizontal and vertical maximum temperature difference does not exceed 2.0°C, which meets the thermal comfort requirements of the human body.