4.3.2. Combined Load (Total Heat)

Try these first

1. 1.

   What two components make up the combined load?

   Hint

   Think about what influences air temperature and humidity.

2. 2.

   Define sensible heat.

   Hint

   Remember, it’s all about temperature.

3. 3.

   What makes up the total heat in an air-conditioning system?

   • Only sensible heat
   • Only latent heat
   • Both sensible and latent heat

   Hint

   Consider all aspects of heat in the air.

4. 4.

   Is latent heat responsible for temperature changes in air?

   • True
   • False

   Hint

   Think about what affects humidity.

5. 5.

   A conference room has a sensible heat load of 1200 BTU/hr and a latent heat load of 600 BTU/hr. Determine the total heat load for this room and discuss the implications for air conditioning sizing.

   Hint

   Add the two heat components to find the total requirement.

6. 6.

   Using a psychrometric chart, if the dry bulb temperature is 25°C and the relative humidity is 50%, explain how you would find the total heat content and what values you would look for.

   Hint

   Identify where the humidity and temperature cross on the chart.