Coupling of geothermal heat pumps with thermal solar collectors

Trillat-Berdal, Valentin; Souyri, Bernard; Achard, Gilbert

doi:10.1016/j.applthermaleng.2006.07.022

Cited by 92 publications

(29 citation statements)

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“…The assessment of system performance from various designs and operations has in previous studies been made by computational simulations or experimental tests [1][2][3][5][6][7][8][9][10][11][12][13], Inalli and Esen [13] present a study similar to this paper.…”

Section: Introductionsupporting

confidence: 49%

Build-up and long-term performance test of a full-scale solar-assisted heat pump system for residential heating in Nordic climatic conditions

Stojanović

Akander

2010

Applied Thermal Engineering

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This paper presents the build-up and long-term performance test of a full-scale Solar-Assisted Heat Pump System (SAHPS) for residential heating in Nordic climatic conditions. This particular SAHPS was developed within the EU project ENDOHOUSING, by predominantly using components and techniques that are available on the market. The analysis primarily focuses on system performance, with emphasis on Heat Pump (HP) and total system Seasonal Performance Factor (SPF), based on long-term and full-scale operation. Analysis shows that despite unfavourable building conditions, for low energy use and utilisation of a SAHPS, the system was successfully in full operation (for about two years) fulfilling heating requirements. Data processing of the series representing the full year period of 2007(feb)-2008(feb), presented a HP and total SAHPS performance of: SPF HP =2.85 and SPF SAHPS =2.09. The authors argue that with an optimised SAHPS control and operation strategy, additional use of circulation pumps and energy (electricity) could be vastly reduced, hence attaining a SPF SAHPS value that is in parity with the SPF HP . As the Nordic (Swedish) Endohousing SAHPS has not yet been properly optimised/designed and installed in an appropriate house, the SPF HP =2.85 is considered satisfactory.

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Section: Introductionsupporting

confidence: 49%

Build-up and long-term performance test of a full-scale solar-assisted heat pump system for residential heating in Nordic climatic conditions

Stojanović

Akander

2010

Applied Thermal Engineering

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“…There has also been much research into numerically simulating the heat exchange associated with solar-geothermal systems [27e32]. According to Trillat-Berdal et al [32], solar rejuvenation of a lone borehole for a single house is hardly justifiable as the energy consumption over 20 years is improved by only 3%. These results are shared by Bernier and Salim Shirazi who similarly conclude that there is no significant advantage to injecting solar energy into a single borehole [33].…”

Section: Introductionmentioning

confidence: 99%

Study of effective solar energy storage using a double pipe geothermal heat exchanger

2016

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a b s t r a c tA reliable transient heat transfer model is used to ascertain the effect of solar thermal energy storage on a geothermal system. The proposed closed loop system is comprised of a double pipe heat exchanger, and is supplied with solar thermal energy during the summer months. The numerical simulations are based on cases that are common in northern climates (e.g. Canada). A conduction-advection based model is used to simulate heat transfer in the ground and in the heat exchange pipes for both heat extraction and heat injection scenarios. The constant power configuration is employed to accurately assess the effects of injecting thermal energy into a geothermal resource. The mass flow rate through the heat exchanger and the solar energy input are varied during summer cycles to investigate the influence on the uptake of thermal energy into the geothermal resource. The effects of rate of heat extraction and injection on the techno-economic performance of geothermal energy production have been investigated.

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“…In the sum field, the demand of thermal energy in Mediterranean region presented the obligation of the numerical research in Ref. [8] in the aim 'performance of the heat pump coupled with the vertical/ horizontal heat exchangers'. The thermal solar collector was used for the production of hot water and the performing refrigerant R-22 was included in the heat pump system in order to ameliorate the output power of this component [9].…”

Section: Introductionmentioning

confidence: 99%

Performance of the coupling of the flat plate collector and a heat pump system associated with a vertical heat exchanger for heating of the two types of greenhouses system

Awani

Chargui

Kooli

et al. 2015

Energy Conversion and Management

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Coupling of geothermal heat pumps with thermal solar collectors

Cited by 92 publications

References 1 publication

Build-up and long-term performance test of a full-scale solar-assisted heat pump system for residential heating in Nordic climatic conditions

Build-up and long-term performance test of a full-scale solar-assisted heat pump system for residential heating in Nordic climatic conditions

Study of effective solar energy storage using a double pipe geothermal heat exchanger

Performance of the coupling of the flat plate collector and a heat pump system associated with a vertical heat exchanger for heating of the two types of greenhouses system

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