Results 51 to 60 of about 70,791 (209)

Thermodynamic Analysis of a High-Temperature Heat Pump Using Low GWP Natural Working Fluids for Upgrading District Heating to Process Heating [PDF]

open access: gold, 2023
Zhenyu Yang   +5 more
openalex   +1 more source

Development Status of Compressor Technology for Medium and Large Capacity Industrial High-Temperature Heat Pumps

open access: yesZhileng xuebao
Heat pump technology is an energy-saving solution that could potentially combat global warming and reduce carbon emissions. Industrial heat pumps recover waste heat from the heating process to heat water or air, thereby reducing electricity consumption ...
Ma Kai   +4 more
doaj  

Cooling Loss Characteristics of Working Fluid Pump for Pump-driven Two-phase Circulation Loop

open access: yesZhileng xuebao, 2020
A pump-driven two-phase circulation loop system was built for data center cooling in order to make full use of the ambient energy. In this study, the cooling loss characteristic of working fluid pump was investigated by changing the system temperature ...
Li Cuicui   +3 more
doaj  

Performance Analysis of a Transcritical CO2 Heat Pump with Mechanical Subcooling for Space Heating

open access: yesZhileng xuebao, 2019
The thermal performance of a traditional transcritical CO2 heat pump for space heating in winter can be improved by mechanical subcooling using a simple vapor-compression cycle.
Dai Baomin   +6 more
doaj  

Performance evaluation and optimization guidance for steam generating heat pumps with significant temperature lift

open access: yesCase Studies in Thermal Engineering
Steam generating heat pumps (SGHPs) offer a promising alternative to coal-fired boilers. To address the lack of general optimization strategy of autocascade SGHP (ASGHP) for variable operating conditions and variable cycle configurations, this paper ...
Xudong Ma   +4 more
doaj   +1 more source

Enhanced thermal output from air-source cascade heat pumps configuration for steam generation

open access: yesCase Studies in Thermal Engineering
Steam generating heat pumps (SGHPs) present a promising solution for replacing coal-fired boilers and advancing industrial decarbonization by utilizing waste heat to produce high-temperature steam.
Xudong Ma   +4 more
doaj   +1 more source

Investigation on Thermodynamic Performance of a Double-Acting Traveling-Wave Thermoacoustic Heat Pump for High-Temperature Range

open access: yesZhileng xuebao, 2012
The paper proposes a novel thermoacoustic heat pump and uses the DeltaEc code to simulate the thermodynamic performance of a double-acting traveling-wave thermoacoustic heat pump for high-temperature range.
Tong Huan, Luo Ercang
doaj  

Centrifugal compressor design for high-temperature heat pumps

open access: yesApplied Thermal Engineering
Heat pumps are identified as crucial technology for decarbonising the heat production. Especially for large-scale, high-temperature heat pumps, the use of centrifugal compressors has been seen as an attractive technological option, but there are very few detailed studies available discussing the compressor designs with different refrigerants for high ...
Ahti Jaatinen-Värri   +3 more
openaire   +1 more source

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