Results 111 to 120 of about 284,728 (216)

Ground-source heat pumps and underground thermal energy storage: energy for the future [PDF]

, 2008
We need energy for space heating—but in most cases not where or when energy sources are available. Energy storage, which helps match energy supply and demand, has been practised for centuries, also in Norway.
Banks, D., Kalskin Ramstad, R., Midttømme, K., Skarphagen, H., Sæther, O.M.   +4 more
core  

Performance comparison of liquid, vapor, and liquid–vapor injection of single-screw compressor for an air-source heat pump

AIP Advances
Refrigerant injection techniques are usually proposed to improve the performance and reliability of compressors when a single-screw compressor applied to an air-source heat pump works at low temperatures in winter.
Qiangyu Wen, Ruiping Zhi, Yuting Wu, Biao Lei, Yanjun Du   +4 more
doaj   +1 more source

Air source heat pump’s in energy audits

Budownictwo o Zoptymalizowanym Potencjale Energetycznym, 2018
Arkadiusz Gużda, Norbert Szmolke
openaire   +1 more source

Ground Air Heat Exchanger Design and Analysis for Air Source Heat Pump

Transactions of the Korea Society of Geothermal Energy Engineers, 2016
Kwang-Seob Lee, Nam-Jin Lyu, Eun-Chul Kang, Euy-Joon Lee   +3 more
openaire   +2 more sources

Research on the economic of clean energy heating systems in cold rural regions

Dianxin kexue
At present, the conventional heating methods in rural areas of northern China present challenges to carbon emission reduction efforts.Consequently, selecting appropriate clean energy heating methods in rural areas has emerged as a significant concern ...
MA Tianfeng, ZHANG Yaru, SHANG Tianwen
doaj  

Performance Comparison of Hydronic Secondary Loop Heat Pump and Conventional Air-Source Heat Pump

, 2012
In residential heat pump systems, the motivation for secondary loop systems is to allow for the use of flammable or toxic refrigerants with lower global warming potentials than the currently employed HFC refrigerants. The addition of radiant panels as integral building components (embedded in concrete at construction) is becoming more common. Combining
Bell, Ian H., Braun, James E.
openaire   +2 more sources

Integrated crew for heating and dehumidification of air-source heat pump for tobacco curing. [PDF]

Sci Rep
Wang J, Ruan X, Li P, Song Y, Liu X, Jia L, Yang Z, Duan W.   +7 more
europepmc   +1 more source

Performance evaluation of air-source heat pump based on a pressure drop embedded model. [PDF]

Heliyon
Koopman T, Zhu T, Rohlfs W.
europepmc   +1 more source

Development of a root-zone temperature control system using air-source heat pump and its impact on the growth and yield of paprika. [PDF]

AoB Plants
Myung J, Cui M, Lee B, Lee H, Shin J, Chun C.   +5 more
europepmc   +1 more source

External Flow Field Simulation of Low Ambient Temperature Air-source Heat Pump Array

Zhileng xuebao
In this study, physical models of six-row and four-row arrays of a low-ambient-temperature air-source heat pump with and without wall obstruction are established.
Tan Qingpeng, Liu Jinping, Chen Jianxun, Chen Xiao, Chen Ziyu   +4 more
doaj