Energy analysis of a solar assisted absorption heat pump for floor heating system

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Date

2004

Author

Sarı, Özgür Gökmen

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Solar assisted single-stage absorption heat pump (AHP) was used to supply energy to a floor-heating system by using the exergy methods. An existing duplex-house,in Ankara, with a heating load of 25.5 kW was analysed. Heating loads of the spaces in the building were calculated and a floor heating panel was modelled for each space leading to the capacity of the AHP before it was designed. Solar energy was delivered to the evaporator and high temperature heat input delivered to the genarator are met by auxiliary units operating with natural gas.The solar energy gained by flat-plate collectors was circulated through AHP.The anaysis performed according to the storage tank temperature reference value if the water temperature leaving the storage tank exceeds a predetermined value it is directly circulated through the floor heating system. Exergue analysis were carried out with Mathcad program. Exergy analysis showed that irreversibility have an impact on absorption system performance.This study indicated which components in the system need to be improved thermally.A design procedure has been applied to a water-lithium-bromide absorption heat pump cycle and an optimisation procedure that consists of determinig the enthalpy, entropy ,exergy, temperature, mass flow rate in each component and coeficient of performance and exergetic coefficient of performance has been performed and tabulated.

Subject Keywords

Thermodynamics.

URI

http://etd.lib.metu.edu.tr/upload/2/12604765/index.pdf
https://hdl.handle.net/11511/14031

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

Ö. G. Sarı, “Energy analysis of a solar assisted absorption heat pump for floor heating system,” M.S. - Master of Science, Middle East Technical University, 2004.