Abstract As the basis for study, this manuscript was written at a time when energy crisis is affecting most parts of world and especially prevailing rampant electricity in developing countries. result, 50 combined cooling, heating power (CCHP) systems studies were reviewed, which included internal combustion engine (ICE), Stirling engine, biomass, micro turbine, solar biogas, photovoltaic (PV) ...

Ground source heat pumps (GSHP) have been used in various types of residential and commercial buildings due to their high efficiency. Numerical models are useful predict the overall performance ground temperature response these systems. This paper presents a hybrid model that contains modified finite element an analytical solution for single conventional vertical borehole system. In this model,...

Ground-source heat pumps play a key role in geothermal development in Central and Northern Europe. With borehole heat exchangers as heat source, they offer de-central geothermal heating at virtually any location, with great flexibility to meet given demands. In the vast majority of systems, no space cooling is included, leaving ground-source heat pumps with some economic constraints. Neverthele...

Direct ground cooling (DGC) is a method used in cold climates to provide buildings without the use of any mechanical refrigeration. When DGC utilized for providing cooling, ground-source heat pumps (GSHPs) and district heating (DH) are two commonly technologies buildings. This article investigates coupling with GSHPs DH terms purchased energy lifecycle costs. An office building equipped active ...

Intermittent operation can improve the coefficient of performance (COP) of a ground source heat pump (GSHP) system. In this paper, an analytical solution to analyze the geo-temperature restoration performance under intermittent operation of borehole heat exchanger (BHE) fields is established. For this purpose, the moving finite line source model is combined with the g-function and the superposi...

Geothermal Heat Pumps, or Ground Source Heat Pumps (GSHP), are systems combining a heat pump with a ground heat exchanger (closed loop systems), or fed by ground water from a well (open loop systems). They use the earth as a heat source when operating in heating mode, with a fluid (usually water or a water-antifreeze-mixture) as the media transferring the heat from the earth to the evaporator o...