Vertical Ground Heat Exchanger
Validation of vertical ground heat exchanger design methodologies
... soil heat capacity of ...of heat capacity data for the other three systems, this value is assumed ...the heat pump entering and exiting (or the GHX exiting and entering) fluid temperatures for the ...
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Development and application of test cases for comparing vertical ground heat exchanger models
... cylindrical heat source is applied locally at each ...two-dimensional heat transfer in the bore field (heat transfer in the axial direction, ...successive ground heat injection loads of ...
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Analysis of rock mass borehole temperatures with vertical heat exchanger
... High heat flow values were obtained for waters nearing 0°C and when the water froze into ...of heat transfer intensi- fication via convection in borehole heat exchang- ers by injecting and ...
9
Modelling of flow and heat transport in vertical loop ground heat exchangers
... the ground as a heat source or heat sink, for supplying free heat or rejecting unwanted heat, depending on the season of the ...the ground heat exchanger. These are ...
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Dynamic thermal performance of horizontal ground source heat pumps The impact of coupled heat and moisture transfer
... for vertical variation (increase) of liquid moisture from soil surface to a depth of water table ...a ground heat exchanger does not necessarily increase with depth monotonically ...
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Effect Of Newly Designed Coil Arrangements Slinky, Spiral, And U-Type On The Horizontal Ground Heat Exchanger Performance
... a heat exchanger. Also, the GHP can be employed to remove heat from the comparatively warm ground in ...The ground heat exchanger (GHE) can be installed in two ways, ...
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A comparison of laboratory and in situ methods to determine soil thermal conductivity for energy foundations and other ground heat exchanger applications
... Both laboratory methods gave significantly lower values of thermal conductivity than the TRT. The TRT thermal con- ductivity value was about twice the needle probe value, and 40% higher than the thermal cell value. One ...
10
The Effectiveness of Borehole Heat Exchanger Depth on Heat Transfer Rate, Study with Numerical Method Using a CFD 3D Simulation
... radial heat transfer and the cylindrical- source solution that models the borehole as a cylinder surrounded by homogeneous ground and having constant heat-flux across its outer ...the Ground ...
8
“OPTIMIZATION OF GROUND SOURCE HEAT PUMP:A REVIEW”
... of ground-source heat pump GSHP technology, concentrating on the ground- coupled heat pump GCHP ...SWHP, ground-water GWHP, and ground-coupled heat pumps are briefly ...
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Experiments Using Capillary Mat as Ground Heat Exchanger for Ground Source Heat Pump Heating Application
... demand. Ground Source Heat Pump (GSHP) is a promising technology to reduce the energy for cooling and heating ...of ground coupled heat ...no vertical borehole construction. Instead, ...
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VENTILATION SYSTEM WITH GROUND HEAT EXCHANGER
... using ground heat exchanger cooperating with a ground heat pump systems used in residential ...of ground heat exchanger does not exceed 100m, which gives great ...
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IMPROVING ENGINE OIL COOLING PERFORMANCE FOR VEHICLE USAGE
... plate heat exchanger: By increasing the surface area of the heat exchanger, which offers large surface area that result to increase in the heat transfer ...the heat transfer rate ...
8
A comprehensive review on 2D and 3D models of vertical ground heat exchangers
... the heat transfer rate based on a 2D finite element method (FEM) by discretizing a 4×4 BHE ...numerical heat transfer model for a BHE by using the finite volume method (FVM) known as the General Elliptical ...
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Heat Transfer Enhancement Using Triangular Fin in Heat Exchanger with Nano Fluids
... the heat exchanger can be operated either as paralle1 or counter flow heat ...the heat transfer rate, heat transfer coefficient, LMTD and effectiveness of heat exchanger ...
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A Design of Compact and Enhanced Heat Exchanger Used in Integrated Nuclear Reactor
... There are some problems should be solved in developing this kind of heat exchanger. In structure design, the spacing between external tubes and the spacing between external and internal tubes, the joint of ...
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Investigation of Effective Parameters on a Thermal Load in a Thermo-Acoustic Refrigerator
... cold heat exchanger of 297 K and the temperature of the hot heat exchanger of 300 ...cold heat exchanger, is ...cold heat exchanger. Thus, it takes a little ...
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HUMAN CALORIMETER FOR DIRECT AND INDIRECT MEASUREMENT OF 24H ENERGY-EXPENDITURE
... Sensible heat loss was measured using a water-cooled heat exchanger, and the temperature of water entering the heat exchanger was controlled to maintain a mean temperature [r] ...
10
Experimental analysis of horizontal ground heat exchanger
... the heat source for GSHP systems in several regions of the ...for ground heat exchangers (GHEs) because the excavation costs of horizontal trenches are significantly lower than the drilling ...The ...
5
Heat Transfer Enhancement in Vertical Helical Coiled Heat Exchanger by Using Nano Fluid Tio2 /Water
... specific heat capacity, thermal conductivity, and dynamic viscosity, needed to calculate the pressure drop and the convective heat transfer coefficient have been measured over a temperature ranges and for ...
5
A REVIEW ON HEAT TRANSFER AUGMENTATION IN COUNTER FLOW SHELL AND TUBE HEAT EXCHANGER
... experimentallythe heat transfer coefficients of shell and helically coiled tube heat exchangerswith different coil pitches were selected as test section for both parallel-flow and counter- flow ...
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