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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...
Persistent link: https://www.econbiz.de/10011105153
The objective of this study is to show the temperature distribution development in the borehole of the ground-coupled heat pump systems (GCHPs) with time. The time interval for the study is 48h. The vertical GCHP system using R-22 as refrigerant has a three single U-tube ground heat exchanger...
Persistent link: https://www.econbiz.de/10011044785
A numerical model has been developed to study the complex thermal behavior of a CO2-filled vertical geothermal borehole …
Persistent link: https://www.econbiz.de/10010729381
This study examines the thermal consequences of freezing the ground in the immediate vicinity of geothermal boreholes … using temperature measurements. The apparatus mimics the behavior of a geothermal borehole and uses a homogeneous saturated …
Persistent link: https://www.econbiz.de/10010702560
A simulation study of hybrid solar-geothermal heat pump system for residential applications using carbon dioxide was …
Persistent link: https://www.econbiz.de/10011044980
Solar heat and geothermal energy are widely used renewable energy which is one of important issue for future. Besides … the R22 and R744 solar-geothermal hybrid heat pumps was investigated numerically according to heat pump operating … efficiency of solar collector in R744 solar-geothermal hybrid heat pump is 4.1% higher than that in R22 one. In addition, the …
Persistent link: https://www.econbiz.de/10011045217
On the basis of a short description of electric compression heat pump, an overview is given of the different sources and exchangers used in our projects, in Belgium, during the last two decades, namely: •— at cold source: ◦— Water loop in ground, water or even air.◦— direct expansion...
Persistent link: https://www.econbiz.de/10011045766
Geothermal district heating system design consists of two parts: heating system and piping network design. District …
Persistent link: https://www.econbiz.de/10011055839
Persistent link: https://www.econbiz.de/10012130581
Flexibly coupling power and heat sectors may contribute to both renewable energy integration and decarbonization. We present a literature review of modelbased analyses in this field, focusing on residential heating. We compare geographical and temporal research scopes and identify...
Persistent link: https://www.econbiz.de/10011704383