Feasibility study and numerical simulation of a ground source heat pump plant, applied to a residential building

Desideri, Umberto; Sorbi, N.; Arcioni, Livia; Leonardi, Daniela

doi:10.1016/j.applthermaleng.2011.07.003

Cited by 47 publications

(16 citation statements)

References 12 publications

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“…Desideri et al [10] showed that the operating costs necessary to heat the building with the GSHP, are lower than the ones for heating the building with a natural gas boiler. Previous studies are mainly focused on the use of horizontal water ground heat exchangers [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamic Modeling of Horizontal Air-Ground Heat Exchangers (HAGHE) for HVAC Systems

et al. 2014

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Abstract:In order to satisfy the requirements of Directive 2010/31/EU for Zero Energy Buildings (ZEB), innovative solutions were investigated for building HVAC systems. Horizontal air-ground heat exchangers (HAGHE) offer a significant contribution in reducing energy consumption for ventilation, using the thermal energy stored underground, in order to pre-heat or pre-cool the ventilation air, in winter and summer, respectively. This is particularly interesting in applications for industrial, commercial and education buildings where keeping the indoor air quality under control is extremely important. Experimental measurements show that, throughout the year, the outside air temperature fluctuations are mitigated at sufficient ground depth (about 3 m) because of the high thermal inertia of the soil, the ground temperature is relatively constant and instead higher than that of the outside air in winter and lower in summer. The study aims to numerically investigate the behavior of HAGHE by varying the air flow rate and soil conductivity in unsteady conditions by using annual weather data of South-East Italy. The analysis shows that, in warm climates, the HAGHE brings a real advantage for only a few hours daily in winter, while it shows significant benefits in the summer for the cooling of ventilation air up to several temperature degrees, already by a short pipe. OPEN ACCESSEnergies 2014, 7 8466

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Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamic Modeling of Horizontal Air-Ground Heat Exchangers (HAGHE) for HVAC Systems

et al. 2014

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“…Heat pumps are one option among available energy efficient equipment [2,9,10] and their combination with solar thermal energy is promising. Solar thermal assisted heat pump systems (SAHPS) are usually powered by electricity and indirectly by fossil fuel.…”

Section: Introductionmentioning

confidence: 99%

Higher ground source heat pump COP in a residential building through the use of solar thermal collectors

et al. 2015

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a b s t r a c tThis article investigates the feasibility of achieving higher performance from ground-source heat-pumps (GSHP) in space heating mode through the use of solar thermal collectors. A novel simulation tool for solar-assisted ground-source heat-pumps (SGSHP) is presented with an analysis of the influence of solar collectors on the improvement of heat pump performance. Solar radiation and climate temperature data of 19 European cities were used to perform simulations of SGSHP and GSHP systems considering a typical residential house. Overall performance coefficients (COP sys ) varied from northern to southern locations between 4.4 and 5.8 for SGSHP and between 4.3 and 5.1 for GSHP. Results show that solar collectors coupling has more impact on performance improvement in regions that benefit from higher irradiance. However, greater running cost savings are achieved in milder climate conditions. Both heat-pump systems are able to effectively contribute to carbon footprint reductions for residential buildings, especially in countries where fossil fuels are the primary source of electricity generation. SGSHP payback periods are found between 8.5 and 23 years from northern to southern localities, making such heating system an economic heating option. SGSHPs are best suited for high irradiance and cool climate locations such as the mountainous regions in southern Europe.

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“…Further, the articles [4][5][6][7] outline economic analysis of HP systems; however, their investment costs are not evaluated. The authors of [8][9] propose numerical simulation and economic modelling of HP for residential heating systems. Economic and energy analysis is presented in [10] where investment costs are evaluated.…”

Section: Introductionmentioning

confidence: 99%

Combined Heat Pump and Power Plant. Part I: Thermodynamic Analysis

Dagilis

2013

mech

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Feasibility study and numerical simulation of a ground source heat pump plant, applied to a residential building

Cited by 47 publications

References 12 publications

Computational Fluid Dynamic Modeling of Horizontal Air-Ground Heat Exchangers (HAGHE) for HVAC Systems

Computational Fluid Dynamic Modeling of Horizontal Air-Ground Heat Exchangers (HAGHE) for HVAC Systems

Higher ground source heat pump COP in a residential building through the use of solar thermal collectors

Combined Heat Pump and Power Plant. Part I: Thermodynamic Analysis

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