Thermostatic expansion valves respond to changes in:
A) Superheat. B) Temperature. C) Pressure. D) Subcooling.
A
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Heating cable for snow-melting is typically installed in a serpentine pattern with loops spaced at _____.
a. 6 inches (15 cm) on center b. 1 foot (30 cm) on center c. 1.5 feet (46 cm) on center d. 2 feet (61 cm) on center
In a boiling water reactor (BWR), ____
a. water under high-pressure is used to cool the reactor core b. not as much control of the fission chain reaction is necessary as in PWRs c. the reactor cores are bathed in low-pressure water that boils to form steam when it comes in contact with the fuel assemblies d. radioactive contamination outside the building is unlikely
Microorganisms have difficulty decomposing tissue that is high in ____________________
Fill in the blank(s) with correct word
An industry rule-of-thumb concerning airflow is that there should be what CFM of airflow per ton across the evaporator?
A) 400 B) 100 C) 200 D) 1000