How should refrigerant be recovered from a chiller?
A) Always begin the refrigerant recovery using vapor recovery methods.
B) Refrigerant should be pushed out by pressurizing the chiller with 50 psig of nitrogen.
C) Always begin the refrigerant recovery using liquid recovery methods.
D) The chiller should be operated to build pressure before starting recovery.
C
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Once again estimate the available water supply if all the stored water were used by the population in Malta.
Apply the water budget equation to evaluate the urgency of water management measures for the island nation of Malta. What will be an ideal response?
Because only the ____ of formwork is measured, the estimator does not have to be concerned about the design of the forms at the time of the takeoff.
A. depth B. height C. volume D. area
Why does a walk-in refrigerator evaporator freeze up from too much load or door open?
a. Not enough off-cycle to defrost the coil. b. The evaporator gets too cold trying to pull down the load. c. The condensing pressure gets too high and floods the evaporator.
Describe schedules, including the typical schedule format and list at least four items commonly found in schedules.
What will be an ideal response?