Question 142Refrigeration & AC - 1st Asst/Chief

The correct answer is B) Cooling the air to a point below dew point, and then reheating it. This is the most effective method to lower the humidity of air being circulated by an air conditioning system. By cooling the air below its dew point, moisture will condense out of the air, effectively removing humidity. The air is then reheated to the desired temperature, resulting in drier air with lower humidity levels. The other options are less effective or incorrect. Option A would result in the air still retaining some moisture. Option C would not remove enough moisture. Option D would require more energy and is not the most efficient way to lower humidity.