一、干管散热及水温降对房间温度失调的影响热水采暖给水干管明装不保温时,由于干管散热引起干管中水温的降低,各立管的实际给水计算温度均低于系统的“名义计算水温”。因此,在散热器的选择计算中,如果仅按一个统一的“名义计算水温”而不是按各立管的实际给水计算温度进行计算的话,除干管所在层外,其余各层所设置的散 First, the impact of heat dissipation and temperature drop of the main pipe on the room temperature imbalance When the hot water heating main pipe is installed without insulation, the actual water supply temperature of each riser is lower than the system temperature due to the decrease of the water temperature in the main pipe due to the heat dissipation of the main pipe. The “calculated water temperature in nominal terms”. Therefore, in the selection calculation of the radiator, if only a single “namely calculated water temperature” is calculated instead of the actual water supply calculation temperature of each riser, the set of scattered