Return-air condtions a pared to determine the best position for the economizer .

Question

Return-air condtions a pared to determine the best position for the economizer . Air conditions can be measured using dry-bulb thermom- . ASHRAE Standard 62 addresses the quality and quantity dampers. eters or enthalpy sensors of ventilation air in commercial structures. ventilation air in response to carbon dioxide sensor read- Demand control ventilation, DCV, controls the amount of ings and estimated occupancy levels REVIEW O 1. Which of the following is true regarding the refrigerant piping on a rooftop package unit? A. The discharge and liquid lines must be field installed. B. The suction and liquid lines must be field installed. C. The discharge and suction lines must be field installed. D. No refrigerant lines are field installed. 2. Which process would best represent the opposite of exhausting air from a system? A. Cooling B. Ventilating C. Heating D. Filtering

Explanation / Answer

Ans 2 : A) cooling

Exhausting air from the system is called as ventilating , so the opposite of it will be the cooling.

The roof top package units are efficient in performing various functions such as cooling , ventilation , filteration of air ,heating etc. The heat recovery feature of these units help in these simultaneous processes.

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