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1. |
Its type choosing needs below data and the heat is calculated as below. |
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2. |
Calculating formula：Q=Q1+Q2 |
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Q:the total heat of enclosure |
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Q1：the dissipation power of enclosure components |
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Q2 the enclosure heat transferred by the difference of its internal temperature and ambient temperature. |
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Q2=a*A*AT |
a：surface heat transferring coefficient usually is 5.5 |
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A： the available surface area of enclosure |
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AT：the difference of ambient temperature and enclosure control temperature |
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3. |
e.g. the electric control box dimensions are :L=0.5m, W=0.6m, H=2.0m, the ambient temperature max. is 35℃ and total heat is 500w .If keep the temperature at 28℃ |
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