1.

What is the contact factor for cooling coil, if td1 = temperature at entry, td2 = temperature at exit and td3 = coil temperature?

A. td1 – td2 / td1 – td3
B. td2 – td1 / td3 – td1
C. td3 – td2 / td2 – td1
D. td3 – td2 / td1 – td2
Answer» B. td2 – td1 / td3 – td1


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