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Energy analysis of a GSHP for North Indian regions for winter.

Number: pap. ID: 424

Author(s) : KUMAWAT R., SAHOO P. K., MURUGESAN K.

Summary

Space heating and cooling are responsible for peak electricity demand. Ground source heat pump (GSHP) is considered as one of the alternate energy sources for space heating since it is environmental friendly and sustainable. The aim of this study is to evaluate the performance of ground-source heat pump systems for space heating under Roorkee weather conditions. As part of the present work, conservation equations for mass, energy and exergy balance are derived for a GSHP system with a U-bend ground heat exchanger. The performance characteristics of this GSHP system are evaluated in terms of energetic and exergetic aspects for Roorkee environmental conditions. Initially the equations developed were applied for the analysis of a GSHP system available in the literature for the purpose of validation. After successfully validating the equations and the procedure, the analysis has been extended for the application of GSHP for space heating a class room with a heat load of 4 kW. Variation of entering and leaving brine water temperature, extracted heat from ground and rejected heat to the test room, total power consumption and coefficient of performance (COP) values for both the whole system and GSHP unit were obtained. CO2 emitted for space heating using both heater and GSHP system was also calculated. The COP of the heat pump unit was obtained to be 6.7 for an evaporator temperature of 6°C. Total % reduction in both CO2 emission and electricity consumption using GSHP system for space heating is found to be 75% with comparison to an electric heating system used in India.

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Pages: 8 p.

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Details

  • Original title: Energy analysis of a GSHP for North Indian regions for winter.
  • Record ID : 30002981
  • Languages: English
  • Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Publication date: 2011/08/21

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