List the three types of air cooled condensers and briefly explain the difference between them
What will be an ideal response?
Natural draft – does not use a fan. Works by natural convection only. Induced draft – uses a fan to suck air across the coil.
Forced draft – uses a fan to blow air across the coil
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The accompanying figure shows an assortment of mechanical symbols. What is the second symbol from the bottom?
A. Rectangular ceiling diffuser B. Round ceiling diffuser C. Flexible connection D. Transition
Establish the funicular arch for the system of loads in Figure P6.28, if the maximum allowable compressive force in the arch is 85 kips.
Many service managers are paid based on ______
A) Direct expenses B) Gross profit C) Salary+commission D) A and B are correct E) B and C are correct
The purpose of a standard control transformer is to:
A) Reduce line voltage to 24 volts for HVACR control systems. B) Regulate the power supply voltage in an air conditioner. C) Increase line voltage from 208 volts to 230 volts. D) Control the amount of power consumed by electric motors.