Answer
A horizontal line on the psychrometric chart represents constant specific humidity line and during simple heating or cooling process only temperature changes, there is no change in specific humidity. Hence simple heating or cooling process is represented by horizontal line.
Work Step by Step
A horizontal line on the psychrometric chart represents constant specific humidity line and during simple heating or cooling process only temperature changes, there is no change in specific humidity. Hence simple heating or cooling process is represented by horizontal line.
