CRD Geothermal System Design Principles

Question 1

What is the primary purpose of a geothermal heat pump system?

Accepted Answer

To transfer heat between the building and the ground

Answer

To generate electricity.

Answer

To store water.

Answer

To filter air.

Question 2

Which component circulates fluid through the geothermal loop system?

Accepted Answer

Circulating pump

Answer

Compressor.

Answer

Expansion valve.

Answer

Thermostat.

Question 3

What is the difference between open loop and closed loop geothermal systems?

Accepted Answer

Open loop uses groundwater; closed loop uses buried pipes

Answer

Open loop systems use air.

Answer

Closed loop systems require electricity.

Answer

Closed loop systems do not transfer heat.

Question 4

Why is soil thermal conductivity important in geothermal design?

Accepted Answer

It impacts the system's heating and cooling efficiency

Answer

It determines water quality.

Answer

It controls electrical consumption.

Answer

It affects air flow.

Question 5

Which factor is critical when sizing a geothermal system?

Accepted Answer

Load calculation

Answer

Building color.

Answer

Number of windows only.

Answer

Type of flooring.

Question 6

What is a common antifreeze used in closed-loop geothermal systems?

Accepted Answer

Propylene glycol

Answer

Ethylene glycol

Answer

Water only.

Answer

Mineral oil.

Question 7

Which loop configuration is typically used when ground space is limited?

Accepted Answer

Vertical loop

Answer

Horizontal loop.

Answer

Pond loop.

Answer

Open loop.

Question 8

What is the function of the expansion valve in a geothermal heat pump?

Accepted Answer

Regulates refrigerant flow and pressure

Answer

Compresses refrigerant.

Answer

Circulates fluid in loop.

Answer

Measures outdoor temperature.

Question 9

Why is proper system commissioning important?

Accepted Answer

To ensure system meets performance standards

Answer

To reduce installation time.

Answer

To increase energy consumption.

Answer

To finalize building permits.