Question 89Refrigeration/AC - Assistant Engineer70% to pass
A room humidistat initiates the lowering of the humidity of the conditioned supply air to a space, while the actual process is accomplished by what means?
AI Explanation
The correct answer is C) lowering the cooling coil temperature and raising the reheater temperature.
When the humidistat detects a need to lower the humidity in the conditioned space, it initiates the process of dehumidification. This is accomplished by lowering the temperature of the cooling coil, which causes moisture to condense out of the air. The reheater temperature is then raised to heat the air back up to the desired supply air temperature, completing the dehumidification process.
The other options are incorrect because raising the cooling coil temperature (A) or both temperatures (B) would not achieve dehumidification, and lowering both temperatures (D) would overcool the air.
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#87 For the proper control of the air temperature in an air conditioning system using chilled water circulation, which of the listed conditions should remain constant regardless of load changes? #88 In an air conditioning system, moisture is removed from the air by what means? #90 To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, what should be done? #91 Which of the following is true concerning the class "D" air conditioning system shown in the following illustration? Illustration GS-RA-42 #92 Which of the following is true concerning the class "A" air conditioning system shown in the illustration as used to condition the air of large public spaces? Illustration GS-RA-09