Results 101 to 110 of about 155 (132)
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Derived thermodynamic design data for heat pump systems operating on R1270
Heat Recovery Systems and CHP, 1991Abstract Theoretical Rankine coefficients of performance and the compression ratios have been presented for heat pump systems operating on R1270. These values are listed in tabular form for temperature lifts of 5–75°C and condensing temperatures of 12–90°C in one degree increments.
M.A.R. Eisa +2 more
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The Experiment on System Performance Comparing Analysis and Displacement between R1270 and R22
Applied Mechanics and Materials, 2015The refrigeration circle performance of air conditioning comparing analysis and displacement between R1270 and R22 is studied in this paper. In addition, the system performance optimization of R1270 refrigeration circle is discussed.The experimental results show that the smaller tube diameter of heat exchanger for R1270 system is easy to improve the ...
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Energy Conversion and Management, 2014
Abstract In this paper natural refrigerant propylene (R1270) has been proposed for transcritical cascade refrigeration system and analyzed. Propylene is used in the low temperature (LT) cycle and carbon dioxide is used in the high temperature (HT) cycle of the cascade transcritical refrigeration system. The proposed transcritical cascade cycle can be
Alok Manas Dubey +2 more
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Abstract In this paper natural refrigerant propylene (R1270) has been proposed for transcritical cascade refrigeration system and analyzed. Propylene is used in the low temperature (LT) cycle and carbon dioxide is used in the high temperature (HT) cycle of the cascade transcritical refrigeration system. The proposed transcritical cascade cycle can be
Alok Manas Dubey +2 more
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Experimental study and molecular dynamics modelling of R1270 and R1234ze(E) with polyvinyl ether
Fluid Phase EquilibriaZhao Yang, Zhaoning Hou
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Advanced Materials Research, 2011
A natural and environment friendly refrigerant propylene and propane are proposed as the substitute of R22 in air conditioner. The experiments were respectively conducted on an existing enthalpy potential lab. Refrigerant charge was held at the constant superheat condition.
Jian Bo Chen, He Li, Ling Xi
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A natural and environment friendly refrigerant propylene and propane are proposed as the substitute of R22 in air conditioner. The experiments were respectively conducted on an existing enthalpy potential lab. Refrigerant charge was held at the constant superheat condition.
Jian Bo Chen, He Li, Ling Xi
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Energy Conversion and Management, 2020
Abstract This study presents a novel dual-temperature air-source heat pump system with an ejector using zeotropic mixture R1270/R600a. The system provides a high-temperature heat source (around 60 °C hot water) and low-temperature heat source (around 35 °C hot water) respectively. The system improves its performance via the application of an ejector.
Jian Liu, Zhang Lin
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Abstract This study presents a novel dual-temperature air-source heat pump system with an ejector using zeotropic mixture R1270/R600a. The system provides a high-temperature heat source (around 60 °C hot water) and low-temperature heat source (around 35 °C hot water) respectively. The system improves its performance via the application of an ejector.
Jian Liu, Zhang Lin
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International Journal of Refrigeration, 2019
Abstract This work evaluates the thermodynamic performance of three different mixed refrigerants: R744/R1270, R744/R717 and R744/RE170 in a cascade refrigeration system composed of two vapor compression cycles. Mixture composition and condensation temperature of the cascade heat exchanger were used as inputs in a parametric analysis, while outputs ...
Luiz Henrique Parolin Massuchetto +4 more
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Abstract This work evaluates the thermodynamic performance of three different mixed refrigerants: R744/R1270, R744/R717 and R744/RE170 in a cascade refrigeration system composed of two vapor compression cycles. Mixture composition and condensation temperature of the cascade heat exchanger were used as inputs in a parametric analysis, while outputs ...
Luiz Henrique Parolin Massuchetto +4 more
openaire +1 more source