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Evaluation of a ground source heat pump system in a net-zero energy office building

Conference Paper


Abstract


  • This paper presents the evaluation of the ground source heat pump (GSHP) system implemented in a net-zero energy office

    building through detailed computer simulations. The building and system are currently undergoing final commissioning. The

    system studied is a hybrid system which includes two identical GSHPs and one air source heat pump. The ground loop system

    consists of three vertical borehole heat exchangers and twelve horizontal linear heat exchangers, which can either operate in

    parallel or in series. In this study, a detailed simulation system representing the real hybrid GSHP system has been developed

    based on the TRNSYS software platform. A parametric study has been performed for both horizontal linear heat exchangers and

    vertical borehole heat exchangers to understand the effects of different design variables on system performance. The performance

    of the GSHPs under different operating combinations of ground heat exchangers (i.e. parallel and series) has been evaluated

    through comparison of the annual load balance within the vertical borehole heat exchangers and energy consumption of the

    GSHPs. Potential solutions that could be used to solve the issue of potential load imbalance in the vertical borehole heat

    exchangers over the course of a year are also discussed.

Publication Date


  • 2013

Citation


  • Huang, S., Ma, Z. & Cooper, P. (2013). Evaluation of a ground source heat pump system in a net-zero energy office building. 12th International Conference on Sustainable Energy Technologies (SET 2013) (pp. 1-9). Hong Kong: Hong Kong Polytechnic University.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1732

Start Page


  • 1

End Page


  • 9

Abstract


  • This paper presents the evaluation of the ground source heat pump (GSHP) system implemented in a net-zero energy office

    building through detailed computer simulations. The building and system are currently undergoing final commissioning. The

    system studied is a hybrid system which includes two identical GSHPs and one air source heat pump. The ground loop system

    consists of three vertical borehole heat exchangers and twelve horizontal linear heat exchangers, which can either operate in

    parallel or in series. In this study, a detailed simulation system representing the real hybrid GSHP system has been developed

    based on the TRNSYS software platform. A parametric study has been performed for both horizontal linear heat exchangers and

    vertical borehole heat exchangers to understand the effects of different design variables on system performance. The performance

    of the GSHPs under different operating combinations of ground heat exchangers (i.e. parallel and series) has been evaluated

    through comparison of the annual load balance within the vertical borehole heat exchangers and energy consumption of the

    GSHPs. Potential solutions that could be used to solve the issue of potential load imbalance in the vertical borehole heat

    exchangers over the course of a year are also discussed.

Publication Date


  • 2013

Citation


  • Huang, S., Ma, Z. & Cooper, P. (2013). Evaluation of a ground source heat pump system in a net-zero energy office building. 12th International Conference on Sustainable Energy Technologies (SET 2013) (pp. 1-9). Hong Kong: Hong Kong Polytechnic University.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1732

Start Page


  • 1

End Page


  • 9