Author Question: Zone control is accomplished in hydronic systems using thermostats that activate: A) A zone ... (Read 62 times)

rachel9 · **on:** Jul 24, 2018

Zone control is accomplished in hydronic systems using thermostats that activate:

A) A zone compressor for each zone. B) A zone boiler for each zone.
C) A zone damper for each zone. D) A zone control valve for each zone.

Question 2

What efficiency advantage do water-source heat pump systems have over air-source heat pump systems?

A) Water is a more efficient heat-transfer medium, and water temperatures are moderated by the earth.
B) It takes less horsepower to pump water than air.
C) Heat has more affinity for water than air.
D) Water is a more efficient refrigerant than either R-22 or R-410A.