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计算空调装置中空气加热及加热加湿处理的器件是以热交换介质的初温和终温的采用为依据的。用众所周知的i～d图作图法所得到的空气的初温和终温反映空气的“显”冷或者“显”热,然而并不是在所有的空气处理状况下,空气的初温与终温之差就是空气从载热体吸收过来的全部热量或者是空气散发给载冷体的全部热量引起的载热体或载冷体初终温之差。在热交换器的实际计算中,往往要遇到图1所示的那些空气处理情况:
The devices for calculating the air heating and heating and humidifying processing in the air conditioning device are based on the adoption of the initial temperature and the final temperature of the heat exchange medium. The initial and final temperatures of the air obtained with the well-known i-d graph plots reflect the “significant” or “significant” heat of the air, but not all of the air treatment conditions, the initial and final temperatures of the air. The difference is the difference between the initial heat of the heat carrier or the cold carrier caused by the total amount of heat absorbed by the air from the heating medium or the total amount of heat released by the air to the cold load. In the actual calculation of heat exchangers, the air handling conditions shown in Figure 1 are often encountered: