Regarding the selection of ambient temperature!
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This post was last edited by rain666 on 2011-5-13 at 14:10. According to formula 4.4.3.1 in GB50264-97, the Design Code for Thermal Insulation of Industrial Equipment and Piping, the heat loss of the thermal insulation structure is calculated as Q = (T0 – Ta) / (parameters), where Ta refers to the ambient temperature. But should Ta be taken as the extreme lowest ambient temperature or the average temperature of the coldest month? Please give me some advice!
Although the average temperature of the coldest month is used when calculating equipment requirements, as a precaution, it is still recommended to use extreme temperatures.
If the average temperature of the coldest month is used at the design stage, the actual measured temperature at the time of acceptance can be used instead, and then the temperature rise can be calculated. Check the adiabatic effect
I wonder if other sea friends have any good suggestions!
Today I saw clause 4.8.2 on page 23 of GB50264-97: When operating continuously, the ambient temperature Ta shall be taken as the average of the annual average temperatures over various years； During operation in the heating season, the average of the daily average temperatures from previous years of operation should be used.