Energy consumption and satisfaction rate of different heating terminals in Chengdu area

Floor heating with gas boiler (FH), radiator with gas boiler and air-source heat pump (ASHP) are the most popular heating terminals in residential buildings of hot summer and cold winter zone. Investigates 10 families in Chengdu area (4 with FH, 2 with radiator and 4 with ASHP) through indoor thermal environment monitoring, questionnaire surveys and heating energy consumption analyses. The results show that the indoor air temperature varies from 5 ℃ to 22 ℃. Different heating terminals result in significantly difference of heating energy consumption, however the overall thermal comfort satisfactory level is stable at a relatively high standard. For example, the FH families consume more than 5.87 kg/m2 coal per month, 8 times as much as that of the ASHP families. In addition, the energy consumption varies a lot in different households with FH. It is not found that the increase of heating energy consumption leads to the improvement of thermal comfort satisfaction.