Why is it necessary to have controls for maintaining a minimum high-side pressure on outdoor air-cooled condensers?
A) The refrigerant will not condense if it is excessively cooled.
B) Compressors will not operate correctly if the compression ratio is too low.
C) The chemical components in the refrigerant will separate if the pressure is allowed to drop below the normal minimum operating pressure.
D) Refrigeration metering devices require a minimum pressure drop to operate.
D
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Robbie purchased 125 steers averaging 425 pounds. She went to Dade County Feed and Supplies for internal worms, lice, and fly control. They have pesticide pour-on in a 1-liter size with 40 doses per 550 pounds of body weight at a cost of $99.95 per liter. There is also a 250-milliliter size with 10 doses per 550 pounds of body weight, at a cost of $35.90 per 250 milliliters. Fly tags come in boxes of 20 tags at a cost of $52 per box.
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A) D B) CLK C) CLR D) Q