Original scientific paper

Efficiency Investigation and Energy Saving of Vertical Ground Source Heat Pump

Johan DESMEDT ; VITO, unit energy technology, Mol, Belgium
Johan Van BAEL ; VITO, unit energy technology, Mol, Belgium

Abstract

The paper presents results of an optimal design process of a ground-source
heat pump system including thermal modelling of the system and selection
of optimal design parameters which affect the system performance and
operational costs. An integrated building and system simulation program was
built for this purpose. The results were compared with a predefined “reference”
installation defining energy savings, environmental benefits and economical
results. It was found that a primary energy saving and CO2 emission reduction
of 31 % was obtained. Decreasing the borehole resistance leads to an increased
natural cooling fraction of 48 % to 61 %. Operational costs were higher for
the reference installation (86 %) than for the heat pump system (73 %). Over
a lifetime, the ground source heat pump system is a far more economical
choice.

Keywords

Borehole heat exchanger; Energy saving; Groung-source heat pump; Office building; Simulation

Hrčak ID:

64451

URI

https://hrcak.srce.hr/64451

Publication date:

31.8.2010.

Article data in other languages: croatian

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