List and describe the components in an expansion valve air-conditioning system.
What will be an ideal response?
A. Compressor: Compresses refrigerant which raises the temperature and pressure of the refrigerant.
B. Condenser: Changes warmed refrigerant to fluid
C. Receiver/dryer: A desiccant filled cylinder maintains dry moisture free liquid
D. Expansion valve: Controls the amount of refrigerant passing through the system to control the temperature.
E. Evaporator: Evaporates the liquid converting it to a gas which passes on to the compressor to start the cycle over again
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Lightweight aggregates used in block making today include expanded fly as, expanded shale, expanded clay, expanded slag, and expanded slate.
Answer the following statement true (T) or false (F)
Which of the following are not important areas of remaining scientific uncertainty regarding global climate change?
A) Whether or not greenhouse gases trap heat in the atmosphere. B) Whether or not agriculture in the United States will be adversely affected by climate change. C) Whether or not concentrations of carbon dioxide have increased in the atmosphere. D) Whether or not the planet has warmed on average.
Which of the following methods is allowed for installing lagging sub-girts over mineral wool board insulati
a. Use adhesive to attach the sub-girts to the insulation. b. Place pre-drilled sub-girts onto insulation weld pins and secure both with speed clips. c. Wire the sub-girts to insulation pins. d. Stretch stainless steel banding between equipment ribs to hold the sub-girts in place.
Contacts are made of silver and cadmium, which resist sticking.
Answer the following statement true (T) or false (F)