The climatic elements around the comfort zone are shown by means of curves which indicate the nature of corrective measures necessary to restore the feeling of comfort at any point outside the comfort zone. For any point of known dry-bulb temperature and relative humidity which falls within the boundaries of the comfort zone, no corrective measures are needed. For the given conditions below, tell what corrective measures are required, if any, to provide human comfort. Explain how humidity affects human comfort in the summer. Explain how wind or air speed affects human comfort in the winter.
Humidity affects the rate at which the body loses heat by evaporation.
During hot weather, high humidity increases discomfort by making it more difficult to evaporate perspiration into the air. This affects the rate at which the body loses heat by convection. The chill factor is one way to quantify the effects of air speed on heat loss.