Technical Note Provides Guidance on Selecting, Installing Piping Materials for Ground Source Geothermal Systems
The Plastics Pipe Institute’s Building & Construction Division has published a major revision of PPI TN-55 “Plastic Piping Materials for Ground Source Geothermal Heating and Cooling Applications.”
Originally issued in 2018, the latest edition of TN-55 features input of industry experts including PPI members and the International Ground Source Heat Pump Association.
The new technical note describes eight types of installation techniques, such as vertical boreholes, inclined or angled configurations, horizontal directional drilling and energy piles. It discusses design topics, such as the effects of borehole depth on static water column pressure. It also addresses why oxygen diffusion barrier layers are typically not required for ground heat exchanger piping. For more details, visit https://www.plasticpipe.org/buildingconstruction.
