Michael de Paly and Jozsef Hecht-Mendez and Markus Beck and Philipp Blum and Andreas Zell and Peter Bayer

Optimization of energy extraction for closed shallow geothermal systems using linear programming

Geothermics vol. 43 (2012), pp. 57-65


Abstract

The objective of the study is to optimize the performance and thereby to mitigate the environmental impact of ground source heat pump (GSHP) systems using multiple borehole heat exchangers (BHEs) by including variable energy loads. Hence, an optimization procedure is developed that is able to predict temperature distributions in the subsurface. Optimized BHE fields are able to keep the maximum temperature change in the subsurface about 18% lower than BHE fields which feature equal flow rates for all BHEs. Thus, the long-term temperature anomaly can be mitigated and the possibility of extracting a higher amount of energy, while keeping temperature thresholds or environmental constraints, arises.


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BibTeX

@article{DePaly12,
  author = {Michael de Paly and Jozsef Hecht-Mendez and Markus Beck and Philipp
	Blum and Andreas Zell and Peter Bayer },
  title = {Optimization of energy extraction for closed shallow geothermal systems
	using linear programming},
  journal = {Geothermics},
  year = {2012},
  volume = {43},
  pages = {57-65},
  abstract = {The objective of the study is to optimize the performance and thereby
	to mitigate the environmental impact of ground source heat pump (GSHP)
	systems using multiple borehole heat exchangers (BHEs) by including
	variable energy loads. Hence, an optimization procedure is developed
	that is able to predict temperature distributions in the subsurface.
	Optimized BHE fields are able to keep the maximum temperature change
	in the subsurface about 18% lower than BHE fields which feature equal
	flow rates for all BHEs. Thus, the long-term temperature anomaly
	can be mitigated and the possibility of extracting a higher amount
	of energy, while keeping temperature thresholds or environmental
	constraints, arises. },
  doi = {10.1016/j.geothermics.2012.03.001},
}