Results 21 to 30 of about 2,905,272 (283)

Heat balance of horizontal ground heat exchangers

open access: yesEcological Chemistry and Engineering S, 2018
This work refers to the modelling of heat transfer in horizontal ground heat exchangers. For different conditions of collecting heat from the ground and different boundary condition profiles of temperature in the ground were found, and temporal variations of heat flux transferred between the ground surface and its interior were determined. It was taken
Krzysztof Kupiec, Monika Gwadera
openaire   +2 more sources

Experimental Investigation on Thermal Performance of Double-U-tube Heat Exchanger Using CuO/water Nanofluid as Heat Transfer Fluid [PDF]

open access: yesE3S Web of Conferences, 2020
By applying the shallow ground energy to supply building heating and cooling, the geothermal heat exchanger systems were considered as an energy-efficient building service system.
Du Ruiqing, Jiang Dandan, Wang Yong
doaj   +1 more source

Study of Ground Heat Exchangers in the Form of Parallel Horizontal Pipes Embedded in the Ground

open access: yesEnergies, 2018
In order to predict long-term changes in the temperature of the ground in which a horizontal ground heat exchanger has been installed, it is beneficial to implement simplified mathematical models of heat transfer.
Krzysztof Neupauer   +2 more
doaj   +1 more source

Study on an advanced borehole heat exchanger for ground source heat pump operating in volcanic island: Case study of Jeju island, South Korea

open access: yesFrontiers in Built Environment, 2022
This paper presents an advanced borehole heat exchanger that has been developed in order to apply a ground source heat pump to a volcanic island where the existing borehole heat exchangers are inapplicable by local ordinance.
Jong Woo Kim   +6 more
doaj   +1 more source

Heat transfer characteristics of in-ground heat exchangers

open access: yesInternational Journal of Energy Research, 1983
Most in-ground heat storage installations use a system of horizontal or vertical plastic pipes to carry heat exchanger fluid. In designing these systems it is generally assumed that the thermal effects of the plastic pipe can be neglected. This paper reports a laboratory study of the pattern of heat flow around fluid-carrying plastic pipe buried in ...
Svec, O. J.   +2 more
openaire   +2 more sources

On the Design and Response of Domestic Ground-Source Heat Pumps in the UK [PDF]

open access: yes, 2014
The design and response of ground source heat pumps coupled to vertical closed loop arrays in UK domestic applications are investigated in this article.
Underwood, Chris, Chris Underwood
core   +1 more source

R32 Partial Condensation Inside A Brazed Plate Heat Exchanger [PDF]

open access: yes, 2012
It is well known that when a superheated gas reaches a cold surface, the condensation starts immediately only if the wall temperature is lower than the dew temperature of the refrigerant; in this case, the heat transfer phenomenon can be also affected by
Mancin, Simone   +2 more
core   +2 more sources

Ground Coupled Heat Pump Design for Tafila Climate [PDF]

open access: yesJournal of Applied Research on Industrial Engineering, 2017
This work represents a theoretical investigation of a ground coupled heat pump system that is used for domestic heating and cooling purposes of a typical residential house in Tafilah-Jordan.
Emran. M. Ataykah
doaj   +1 more source

Fouling of a double pipe heat exchanger [PDF]

open access: yes, 2004
Every single heat exchanger in operation in modern industries is exposed to fouling to a greater or lesser extent depending on the surface temperature, surface condition, material of construction, fluid velocity, flow geometry and fluid composition.
Llinares Fontdevila, Antonio
core   +1 more source

A derivative method for minimising total cost in heat exchanger networks through optimal area allocation [PDF]

open access: yes, 2013
This paper presents a novel Cost Derivative Method (CDM) for finding the optimal area allocation for a defined Heat Exchanger Network (HEN) structure and stream data, without any stream splits to achieve minimum total cost. Using the Pinch Design Method (
Walmsley, Michael R.W.   +4 more
core   +2 more sources

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