Question 146Refrigeration/AC - 1st Asst/Chief70% to pass
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?
AI Explanation
The correct answer is D) admit only enough fresh outside air to provide proper ventilation.
The key to preventing unnecessary loading of the air conditioning system is to only bring in the minimum amount of fresh outside air required for proper ventilation. This helps maintain the designed dry bulb temperature and relative humidity without overtaxing the system. The other options would not directly address the goal of minimizing fresh air intake while still providing adequate ventilation.
Reducing air reheating (A) or lowering compressor head pressure (B) would not necessarily reduce the fresh air intake. Operating the purge recovery unit continuously (C) is not directly related to fresh air intake control.
Related Questions
#144 Which of the following is true concerning the class "D" air conditioning system shown in the following illustration? Illustration GS-RA-42 #145 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? #147 Concerning the arrangement of equipment and associated hoses shown in the illustration, which statement is true? Illustration GS-RA-59 #148 Which of the following methods is normally used to control the circulated air temperature of an air conditioning system using chilled water circulation? #149 The introduction of outside air to the air conditioning system is 90°F with a relative humidity of 60%. The air has been conditioned to 70°F with a relative humidity of 80%. Using the psychrometric chart, shown in the illustration, determine the quantity of moisture removed from one pound of the conditioned air. Illustration GS-RA-22