Heat Transfer in Soil Systems
Experience
Gary Phetteplace has been working on heat transfer problems in soils, primarily associated with buried utilities, since 1978. His work has included development of finite element models for conduction heat transfer as well as many programs where field measurements were made for verification of computational procedures. He has extensive experience in instrumenting all types of buried heat distribution systems (direct buried, trench type, and utilidor/tunnel) using steam and high/medium/low temperature hot water as the carrier fluid. Gary Phetteplace has also conducted work in the area of frost shielding of buried water and sewer pipelines using rigid extruded polystyrene insulation. Gary Phetteplace developed the consistent set of heat transfer relations that are contained in Chapter 11 - District Heating and Cooling of the 2008 (and many past versions as well) of the ASHRAE HVAC Systems and Equipment Handbook.