Heating and Cooling Load Calculations

Chapter $2$

$4-$ Plot curves showing the variation in dry$-$bulb, wet$-$bulb and dew point temperatures $($DP from the psychrometric chart$)$ with time of day for Raleigh $($Durham IntI.$),$ North Carolina in July.

a$)$ From the graph, find the design conditions for $1$:$00$ p$.$m$.$

b$)$ During any given day, the sun is highest in the sky at noon. How can you explain that your curve does not peak until three hours later?

c$)$ How does the specific humidity of the outside air vary during a design day?

d$)$ Assuming a night club is located in Raleigh, North Carolina, What design temperature would you use for estimating the load at $10$:$00$ p$.$m$.?$