Exam 44: Geothermal Heat Pumps

The ______________________ is nothing more than a large tank that both receives water from the condenser as well as supplying water to the condenser.

What are return wells used for?

In a geothermal heat pump system, there is a refrigerant loop and a water (water and antifreeze) loop.

In a closed-loop system, the same fluid (water or water and antifreeze) will absorb heat from the ground in the winter and reject the heat to the ground in the summer.

Many coaxial heat exchangers are made of ____.

What is the temperature differential between water in and water out of a heat exchanger that has transferred 50,000 Btu/h? The flow rate is 10 gallons per minute.

A(n) ____________________ blower is used to move the air through the air distribution system.

A dry well is most commonly used as part of a(n) ____________________ system.

In order to prevent water contamination, wells used for geothermal heat pump systems are grouted.

The hot gas line from the heat pump's compressor can be used to ____.

Before deciding to purchase or install an open-loop system, the ____________________ must be evaluated first.

Scale results in a low head pressure in the cooling mode and high suction pressure in the heating mode.

A "dedicated" geothermal well is part of a(n) ____________________ system.

Temperature, quantity, and cleanliness are three important factors that should be addressed when referring to water quality.

Geothermal heat pumps use the ____________________ water as a heat source or a heat sink.

An advantage of a "parallel flow" configuration of ground loops is ____.

List three characteristics of fluids used in heat exchange pumps.

Of what are the buried pipes usually made?

The inner tube of heat exchangers of water-source heat pumps have extended surfaces called ____________________, which increase the surface area for better heat transfer.

The ground loop configuration that is used when there is a shortage of land is the ____________________.