Snugg Pro provides modeling for three types of ground-source heat pumps.
The input screens do not differ from one type to another. The specifics of each type are modeled for you.
Deep Loop System. A deep ground loop is a series of pipes buried underground at a depth where temperatures stay consistent year-round. It serves as the critical link allowing geothermal heat pumps to use the earth as a heat source or heat sink, depending on if heating or cooling is required.
Open-Loop System. This type of system uses well or surface body water as the heat exchange fluid that circulates directly through the GHP system. Once it has circulated through the system, the water returns to the ground through the well, a recharge well, or surface discharge. This option is obviously practical only where there is an adequate supply of relatively clean water, and all local codes and regulations regarding groundwater discharge are met.
Shallow Loop System. Shallow geothermal (SG) technology allows the use of Ground Heat Exchangers (GHEs), buried underground, for the exchange of energy with the surrounding soil via air or water. ... The higher efficiency of the SG systems is due to the thermal inertia of the soil resulting in a stable temperature of soil throughout the year.
References:
NYSERDA: Ground Source Heat Pump