A closed-loop system is practical only when
A) there is an adequate supply of water, it is of good quality, and local codes and regulations permit groundwater disposal.
B) loops are closed vertically, because they take up significantly less space.
C) loops are closed horizontally, because they are the most economical.
D) the geology, hydrology, and land availability meet the requirements for system installation.
Question 2
An open-loop system is practical only if
A) the secondary refrigerant loop temperature can be closely monitored.
B) a local stream or pond can be used as the water supply
C) local codes allow discharge of non-toxic anti-freeze solutions into the water supply
D) there is an adequate supply of water and it is of good quality.
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