Find the highest permissible Top and W for the summer zone o

Find the highest permissible T_op and W for the summer zone of the ASHRAE comfort chart if the relative humidity is 50 percent. Assume T_op = T_a.

Solution

According to ASHRAE chart the 50% RH curve starts from 10 degree C and goes upto 33.5 degree C . Hence the highest permissible Top = 33.5 C

Value of W goes from 0.001 to 0.016 . Hence maximum W is 0.016 kg/kg of Dry Air.