Results 91 to 100 of about 155 (132)
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Experimental investigation of the performance of an R1270/CO2 cascade refrigerant system
International Journal of Refrigeration, 2020Abstract Herein, we proposed a cascade refrigerant system with R1270 and carbon dioxide refrigerants. The natural refrigerant R1270 was adopted in the high-temperature circuit to replace NH3 and R290. A prototype cascade refrigerant system with two semi-hermetic piston compressors was manufactured, and its performance was investigated experimentally.
Yeqiang Zhang +5 more
openaire +1 more source
International Journal of Refrigeration, 2021
Abstract The present paper concerns an experimental investigation about the heat transfer coefficient during convective condensation of hydrocarbons and their zeotropic mixtures. Experiments were performed in a horizontal smooth channel, with internal diameter of 9.43 mm for R600a, R290, R1270, R600a/R290 (70/30 molar fraction) and R600a/R1270 (75/25
Tiago Augusto Moreira +2 more
openaire +1 more source
Abstract The present paper concerns an experimental investigation about the heat transfer coefficient during convective condensation of hydrocarbons and their zeotropic mixtures. Experiments were performed in a horizontal smooth channel, with internal diameter of 9.43 mm for R600a, R290, R1270, R600a/R290 (70/30 molar fraction) and R600a/R1270 (75/25
Tiago Augusto Moreira +2 more
openaire +1 more source
Micro and Nano Letters, 2018 In this work, turbulent convective heat transfer of propylene (R1270)‐based nanorefrigerant in a circular tube with a uniform heat flux of 20 kW/m 2 is numerically investigated using different types of nanoparticles namely Al 2 O 3
Ahmed OUADHA, Mohammed Zohud
exaly +2 more sources
Experimental study on the solubility of Propylene (R1270) in PAG, POE and AB lubricants
International Journal of RefrigerationGuogeng He, Jialiang Hua
exaly +2 more sources
Experimental performance study of a small wall room air conditioner retrofitted with R290 and R1270
International Journal of Refrigeration, 2012An original R22 wall room air conditioner with a cooling capacity of 2.4 kW and energy efficiency ratio (EER) of 3.2 is retrofitted with a compressor of a 20% larger displacement to charge R290 and R1270 for performance experiments. The results show that for R1270, only adopting a same kind mineral lubricant of higher viscosity would supply 2.4% higher
J H Wu
exaly +2 more sources
Energy Conversion and Management, 2022
Ejector expansion refrigeration systems have gained prominence in the refrigeration sector, providing much better thermodynamic performance than conventional refrigeration systems. The present work aims to improve the thermodynamic performance of a booster assisted ejector expansion vapour compression refrigeration system with constant area mixing ...
Ilhan Tekin Öztürk
exaly +3 more sources
Ejector expansion refrigeration systems have gained prominence in the refrigeration sector, providing much better thermodynamic performance than conventional refrigeration systems. The present work aims to improve the thermodynamic performance of a booster assisted ejector expansion vapour compression refrigeration system with constant area mixing ...
Ilhan Tekin Öztürk
exaly +3 more sources
Performance of a Split-Type Air Conditioner with Natural Refrigerant R1270 to Replace R22
Advanced Materials Research, 2011A natural and environment friendly refrigerant propylene (R1270) is proposed as a substitute of R22 in the residential air conditioner. The experiments on the cooling performance of the air conditioner with R1270 and R22 were respectively conducted on an existing enthalpy potential bench, during the degree of superheating keep constant and refrigerant ...
Jian Bo Chen
exaly +2 more sources
Journal of Mechanical Science and Technology, 2008
In this study, therma l performance of two hydrocarbon refrigerants of R290 and R1270 was measured in an attempt to substitute R22. They wer tested in a heat pump bench tester of 1 ton capacity with a hermetic rotary compressor. Water and water/glycol mixture were employed as the secondary heat transfer fluids in the test bench.
Ki-Jung Park, Dongsoo Jung
openaire +1 more source
In this study, therma l performance of two hydrocarbon refrigerants of R290 and R1270 was measured in an attempt to substitute R22. They wer tested in a heat pump bench tester of 1 ton capacity with a hermetic rotary compressor. Water and water/glycol mixture were employed as the secondary heat transfer fluids in the test bench.
Ki-Jung Park, Dongsoo Jung
openaire +1 more source