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Ground energy balance analysis of GSHP system with dynamic simulation of building heating and cooling load.

Author(s) : LIU J., LI W., MU X.

Summary

The ground source heat pump (GSHP) system as a low-energy-consumption technology, has been widely used. The heat transferred from/to the deep ground soil always varies with the characteristics of the building' heating and cooling load. Heat imbalances will cause soil temperature changes that may weaken the operation performances of ground heat exchangers (GHE) accumulatively. The soil temperature predictions in given buildings and GSHP systems is the key factors to design HVAC systems and optimize the operations. Soil temperature resuming has been formerly considered into classic line source theory model. Long term time-step simulation of variable heat flow line source model can be done by using load aggregation. We suggest a definition of the heat flux block based on the temporal length away from the present moment. It reduces the former superposition calculation of total 8760 items into 64 items.

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Details

  • Original title: Ground energy balance analysis of GSHP system with dynamic simulation of building heating and cooling load.
  • Record ID : 2010-0254
  • Languages: English
  • Source: Zbornik radova. 40. Medunarodni kongres o grejanju, hladenju i klimatizaciji./ Proceedings. 40th International congress on HVAC&R.
  • Publication date: 2009/12/02

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