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Optimization of a Hybrid Ground Source Heat Pump using the Response Surface Method

Honghee Park
Graduate School of Division of Mechanical Engineering, Korea University, Seoul, Korea

Wonuk Kim
Graduate School of Division of Mechanical Engineering, Korea University, Seoul, Korea

Joo Seoung Lee
Graduate School of Division of Mechanical Engineering, Korea University, Seoul, Korea

Yongchan Kim
School of Mechanical Engineering, Korea University, Seoul, Korea

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110571345

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:15, s. 1345-1351

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Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

A hybrid ground source heat pump (HGSHP) has been recommended as a low cost alternative of a ground source heat pump (GSHP) which has higher initial costs with increasing the size of ground heat exchanger (GHX) for imbalanced load conditions. HGSHP systems incorporate both GHX and supplemental equipments; such as cooling towers and/or boilers. The main issues of HGSHP are the optimal size design and control strategies of supplemental equipments. The objective of this paper is to optimize the size and control strategies using an optimization methodology called as the response surface method (RSM) to decrease the system’s total initial cost (IC) and/or life cycle cost (LCC) and/or annual energy use (AEU) of HGSHP systems. The simulation data used in this research was originated from Yavutzurk et al. and integrated with the RSM. Commercial software; which is Minitab 15; has been adopted to draw contour plots; surface plots and overlaid contour. With using response optimizer; the optimal size design and control strategies of supplemental equipments were determined individually and the results were compared with the results of Yavutzurk et al. The optimal size and control strategies have been successfully determined using the optimization tool of the RSM.

Nyckelord

Hybrid ground source heat pump; Supplemental equipment; Optimization; Response Surface Method

Referenser

[1] United States Department of Energy; Energy Efficiency and Renewable Energy homepage; September 2007; http://www1.eere.energy.gov/geothermal/history.html.

[2] ASHRAE; Commercial/institutional ground-source heat pumps engineering manual; Atlanta: American Society of Heating; Refrigerating and Air-Conditioning Engineers; Inc.; 1995.

[3] S.P. Kavanaugh and K. Rafferty; Ground-source heat pumps: Design of geothermal systems for commercial and institutional buildings; Atlanta: American Society of Heating; Refrigerating and Air-Conditioning Engineers; Inc.; 1997.

[4] S.P. Kavanaugh; A design method for hybrid ground source heat pumps; ASHRAE Transactions 104 (2); 1998; pp. 691-698.

[5] C. Yavuzturk and J.D. Spitler; Comparative Study to Investigate Operating and control Strategies for Hybrid Ground Source Heat Pump Systems Using a Short Time-step Simulation Model; ASHRAE Transactions 106(2); 2000; pp.192-209.

[6] J.B. Singh and G. Foster; Advantages of Using the Hybrid Geothermal Option; The Second Stockholm International Geothermal Conference; The Richard Stockton College of New Jersey; 1998.

[7] M. Ramamoorthy et al.; Optimal Sizing of Hybrid Ground- Source Heat Pump Systems that use a Cooling Pond as a Supplemental Heat Rejecter – A System Simulation Approach; ASHRAE Transactions 107(1); 2001; pp. 26-38.

[8] A.D. Chiasson and C. Yavuzturk; Assessment of the Viability of Hybrid Geothermal Heat Pump Systems with Solar Thermal Collectors; ASHRAE Transactions 109(2); 2003; pp. 487-500.

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