A passive design strategy for a horizontal ground source heat pump pipe operation optimization with a non-homogeneous soil profile

作者：Rezaei Bazkiaei Amir^*; Dehghan Niri Ehsan; Kolahdouz Ebrahim M; Weber A Scott; Dargush Gary F

来源：Energy and Buildings, 2013, 61: 39-50.

DOI：10.1016/j.enbuild.2013.01.040

• Horizontal ground source heat pump
• Tire Derived Aggregate
• Non-homogeneous soil
• Optimization
• Genetic algorithm
• Energy efficiency
• Control

The effectiveness of a non-homogeneous soil profile for horizontal ground source heat pumps (GSHPs), defined as natural backfill with an intermediate layer of material having different thermal characteristics, is investigated. Steps toward development of a comprehensive model to consider the effects of the non-homogeneous layer are described. The developed model is utilized successfully in conjunction with a genetic algorithm (GA) search method to obtain the optimized operational parameters for a GSHP in three different climate conditions. A properly sized and engineered non-homogeneous soil profile demonstrated the potential to increase the energy extraction/dissipation rates from/to the ground to a significant level. The potential benefit of a recycled product, Tire Derived Aggregate (TDA), as an insulating non-homogeneous layer is assessed. TDA is demonstrated to be more effective in the cold climate (Buffalo) by increasing the energy extraction rates from the ground approximately 15% annually. TDA's effectiveness is less pronounced in a relatively moderate climate (Dallas) by increasing the energy extraction rates from the ground about 4% annually. For the cooling only scenario (Miami), a high conductive intermediate layer of saturated sand exhibited greater potential to increase the energy dissipation to the ground. Published by Elsevier B.V.

• 出版日期2013-6