Results 71 to 80 of about 90,105 (214)

Heat pump assisted drying of flower bulbs

open access: yes, 2021
Within the agriculture sector, drying of food and flowering products is a required production step. Most companies use hot air dryers where the heat is obtained by combustion of natural gas.
Wagenaar, S. (author)   +1 more
core  

Development of High Efficiency Carbon Dioxide Commercial Heat Pump Water Heater

open access: yes, 2012
Although heat pump water heaters are today widely accepted in both Japan and Europe, where energy costs are high and government incentives for their use exist, acceptance of such products in the US has been limited.
Elbel, Stefan   +4 more
core  

Research on the Control Strategy of the Hot Gas Bypass Cycle in Low-Temperature Heating Scenarios for Electric Vehicle Air Conditioners

open access: yesZhileng xuebao
Winter heating of passenger compartments in electric vehicles relies on vehicle air-conditioning systems, in which the air outlet temperature must be rapidly increased to the set value.
Zhang Tian   +6 more
doaj  

Experimental Research of Air Source Heat Pump Frosting and Defrosting in a Double Stage-Coupling Heat Pump [PDF]

open access: yes, 2006
In a double stage-coupling heat pump, comprising an air source and water loop heat pump, the 13~20 ? low temperature water is supplied to the water loop heat pump unit. The water loop heat pump can extract heat from the water and heat the indoor air. The
Lu, Z., Gu, J., Wang, Z.
core  

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  

Design of an Integrated Energy System using a cascade high temperature heat pump with zeotropic refrigerants [PDF]

open access: yes
openThis thesis deals with the design and modelling of an integrated energy system capable of sustaining its operation. This system is based on a cascade high-temperature heat pump utilizing zeotropic refrigerants.
VOLPATO, OMAR
core  

Investigation of a Novel Air Source Heat Pump Test Platform

open access: yes
A flexible air source heat pump testing platform is being developed at the National Renewable Energy Centre that will have the advantages of both a field trial and a laboratory test.
Shi, Yuan
core  

System Modeling of Gas Engine Driven Heat Pump

open access: yes, 2012
To improve the system performance of a gas engine driven heat pump (GHP) system, an analytical modeling and experimental study has been made by using desiccant system in cooling operation (particularly in high humidity operations) and suction line waste ...
Mahderekal, Isaac   +2 more
core  

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  

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