EXPERIMENTAL STUDY ON THE CEILING RADIATION COOLING/HEATING SYSTEM USING GROUNDWATER

PMV control effectiveness on the indoor thermal environment in summer cooling case

Abstract

PMV control system was applied for a ceiling radiation cooling/heating system utilizing groundwater as heat source/sink. Evaluation was based on the three season measurements of summer operation. The research results are summarized below:
1) Indoor PMV values were settled in the range of 0-1. 2) As compared with room temperature control, PMV values in the room under PMV control became low about 0.2. 3) The hunching phenomenon at night was canceled. 4) In PMV control, almost same indoor thermal environment was realized by the case which put the control position on the wall, and the case which placed the control position in the center of the room.