Ground Source Design Process

Ground souce HVAC/R systems require sizing the ground heat exchanger (ghex) to the facility loads. Air source, direct connected fuel and power designs do not have the additional steps needed to properly size the ghex.

Three steps are the "big picture" for ground source:
1) Facility design (this is where the others stop) and this is usually done by a Engineering MEP firm
2) Local earth properties; thermal conductivity and deep earth temperatures
3) ghex sized to meet the facilities loads over a 30 to 40 year design period