The Indoor Thermal Comfort Research Of Radiation Heating In Nanjing Season

Along with the rapid economic development, energy supply increasinglynervously. The energy consumption of the air conditioning is more than half of thebuilding energy consumption. Therefore, taking all possible measures to reduce theenergy consumption of the air conditioning is urgently. The capillary plane radiationair conditioning technology has developed since the60s in Europe. Meanwhile, due toits high comfort and its high energy saving effect, the technology is graduallypromoting in domestic.This article researches on the Air conditioning system of the ground source heatpump plus capillary plus fresh air. In the article, I take the field measured, deal withvarious kinds of parameters, and assess the comfort indoor according to the calculatedPMV-PPD further. Also, I find a kind of the way which is better comfort, moreeconomy and more energy saving, for supply and return water temperature andcapillary laying methods, according to the practical engineering application. Finally, Idetermined the open time and attenuation time of capillary for the user. The mainconclusions are as follows:1) The general PMV is greater than zero indoor, not less than zero, whichexplains that the overall radiation heating of capillary can meet therequirements of the thermal comfort2) The temperature is uniformity indoor, which can reach the fluctuating rangeof±0.5℃, which is the room temperature allowed.3) The temperature gradient of the second floor space and the stair is good, butthe temperature gradient of the large space and a layer of space need toimprove;4) At the capillary fully open state,the ideal unit set for the supply and returnwater temperature is33/28℃, and the capillary actual supply and returnwater temperature is21.13/20.75℃and26.48/25.52℃at the capillary fullyopen state; 5) There are two ideal conditions at the capillary partly open state. Onecondition: Capillary is equipped for the position, including the bottom of thesouth facade of the large space, the floor of the large space and the ceiling ofa layer of space. The unit set for the supply and return water temperature is38/33℃, and the capillary actual supply and return water temperature is32.15/31.26℃; Another condition: Capillary is equipped for the position,including the upper of the south facade of the large space, the bottom of thesouth facade of the large space, the floor of the large space and the ceiling ofa layer of space. The unit set for the supply and return water temperature is33/28℃, and the capillary actual supply and return water temperature is27.69/26.85℃.6) Capillaries are all closed:①The open time of the ceiling directly layingcapillary is2~3hours;②The wall of no installation of capillary reach stablestate need3~4hours;③The attenuation time of each space wall is12~14hours.