Results 21 to 30 of about 209,208 (358)

Finite element modeling of geothermal source of heat pump in long-term operation [PDF]

E3S Web of Conferences, 2020
Heat pumps become more and more popular heat source. They can be an alternative choice for obsolete coal fired boilers which are emissive and not ecological.
Hałaj Elżbieta
doaj   +1 more source

State of the Art, Perspective and Obstacles of Ground-Source Heat Pump Technology in the European Building Sector: A Review

Energies, 2022
In the European Union, 40% of the overall final energy consumption is attributable to the buildings sector. A reason for such data may be found considering that the great majority of the building stock is more than 40 years old. According to the European
Davide Menegazzo, Giulia Lombardo, Sergio Bobbo, Michele De Carli, Laura Fedele   +4 more
doaj   +1 more source

Performance Simulation of Air-ground Hybrid Source Heat Pump Systems in Northern China

Zhileng xuebao, 2021
The air-ground hybrid source heat pump system can realize indirect air source heat pump mode and heat compensation mode through an air-water heat exchanger, which could compensate for the difference between heat extraction and heat injection to the soil.
Wang Wentao, Li Xianting, Hu Pingfang
doaj  

A wet-bulb temperature-based control method for controlling the heat balance of the ground soil of a hybrid ground-source heat pump system

Advances in Mechanical Engineering, 2017
Hybrid ground-source heat pump system has been widely used for mitigating the heat accumulation problem of conventional ground-source heat pump systems.
Hang Wan, Xinhua Xu, Anbang Li, Tian Yan, Wenjie Gang   +4 more
doaj   +1 more source

THERMAL PERFORMANCE AND CHARACTERISTICS OF SPIRAL-TUBE GROUND HEAT EXCHANGER FOR GROUND-SOURCE HEAT PUMP [PDF]

, 2014
This study investigates thermal performance and characteristics of spiral-tube ground heat exchanger (GHE) for ground source heat pump in laminar and turbulent flows. The thermal performances are evaluated by numerical method using a CFD code.
Jalaluddin
core   +1 more source

Renovation Results of Finnish Single-Family Renovation Subsidies: Oil Boiler Replacement with Heat Pumps

Energies, 2022
Finland has approximately 150,000 oil-heated private homes. In 2020, the Finnish government launched subsidies for private homeowner energy renovations.
Paula Sankelo, Kaiser Ahmed, Alo Mikola, Jarek Kurnitski   +3 more
doaj   +1 more source

Perfection of an Energy-Economic and Environmental Parameters of the Ground Source Heat Pump Systems with Preventing Freezing of the Soil around Ground Pipes [PDF]

Problems of the Regional Energetics
This article is devoted to the methods for perfection of energy, economic factors, environmental factors and work modes of the ground source heat pump systems with the account of climate conditions.
Dnisova A.E., Ivanov P.O., Mazurenko A.S., Zhaivoron O.S.   +3 more
doaj   +1 more source

Numerical simulations on potential application of ground source heat pumps with vertical ground heat exchangers in Bangkok and Hanoi

Energy Reports, 2021
Southeast Asian countries have experienced fast economic growth for several decades. This rapid growth has been accompanied by an increased energy demand per capita. Ground source heat pumps could be a solution to improve energy efficiency.
Arif Widiatmojo, Youhei Uchida, Hikari Fujii, Hiroyuki Kosukegawa, Isao Takashima, Yutaro Shimada, Srilert Chotpantarat, Punya Charusiri, Trong Thang Tran   +8 more
doaj   +1 more source

Evaluating the thermal performance of Wet Swales housing Ground Source Heat Pump elements through laboratory modelling [PDF]

, 2019
The authors wish to acknowledge the CAWR, Coventry University, for the administrative support; and the GITECO Research Group, University of Cantabria, for housing the laboratory experiments.Land-use change due to rapid urbanization poses a threat to ...
Carlos Rey-Mahía, Felipe Pedro Álvarez-Rabanal, Jorge Roces-García, Luis A. Sañudo-Fontaneda, Novales, Steel, Stephen John Coupe, Valerio C. Andrés-Valeri, Winston, Woods Ballard   +9 more
core   +4 more sources

Coefficient of Performance Stabilisation in Ground Source Heat Pump Systems

Journal of Sustainable Development of Energy, Water and Environment Systems, 2017
The number of installations with ground source heat pumps is steadily increasing. As they involve high investment costs, they require deliberate action and analysis.
Jerzy Wołoszyn, Andrzej Gołaś
doaj   +1 more source