ライブラリ登録: Guest
ICHMT DL ホーム 今年 アーカイブ 執行委員会 熱・物質移動国際センター

NUMERICAL AND EXPERIMENTAL STUDY OF GROUND-COUPLED HEAT PUMPS COMBINED WITH THERMAL SOLAR COLLECTORS

DOI: 10.1615/ICHMT.2008.CHT.1540
13 pages

Gilbert Achard
Laboratory of Design Optimisation and Environmental Engineering (LOCIE), University of Savoy, Chambéry, France

Gilles Fraisse
LOCIE, UMR 5271, Université Savoie Mont Blanc, 73376 Le Bourget du Lac Cedex, France

Bernard Souyri
Laboratoire Optimisation de la Conception et Ingénierie de l'Environnement Polytech'Savoie, 73376 Le Bourget du Lac Cedex, France

要約

This paper presents the numerical study of a geothermal heat pump combined with solar collectors using TRNSYS. This system, called GEOSOL, balances domestic hot water (DHW) and a building's heating/cooling energy loads. An experimental study of the process was conducted on a 180-m2 single-family house to validate the numerical model of the process. Two variants of the process were studied. Both variants use solar energy for DHW heating and for injecting heat into the ground. In addition, the first variant also uses solar energy to directly heat the building by heating floor and has a larger area of solar collectors. While taking into account the electric consumption of the circulation pumps, the results show that the overall electric consumption of these two variants is identical : 31 kWh/ m2. Nevertheless, since the heat injected into the ground accounts for 54% of the heat extracted, the first variant can be a better solution to balance thermal ground loads and favour thermal recharging of the ground. The numerical results corresponding to energy consumption are quite similar to the experimental results. This encouraging observation led us to study the suitability of the same GEOSOL process for a 36-flat building using TRNSYS. The results show that a ground-coupled heat pump connected to ten boreholes is perfectly adapted to balancing the heating loads for this type of building. The number of boreholes can be reduced by increasing the area of solar collectors to avoid the slow but inevitable decrease in the ground temperature which penalizes the COP of the entire process.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH