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Energieversorgung mit R290-Wärmepumpen
HLH, 2023Die Nutzung regenerativer Wärmeerzeugungssysteme und die damit verbundene Reduzierung von CO2-Emissionen sind wichtige Ziele für die Zukunft. Dabei spielen Wärmepumpen mit natürlichen Kältemitteln eine entscheidende Rolle. Der Blick auf ein aktuelles Projekt im Stuttgarter Vorort Leonberg zeigt, vor welchen Entscheidungen Ingenieure und Fachplaner ...
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The Comparison of R290 and Mixture of R600a with R290 on Evaporator Temperature at Low Charge
2019 5th International Conference on Science and Technology (ICST), 2019One of the negative impacts of low R290 charge within the air conditioning system is the lower evaporator temperature which is easily frost forming at the evaporator pipe. One way to increase the evaporator temperature is to add R600a into the system. The methodology of this present research is a theoretical analysis of performance pure R290 and R290 –
Jeri Tangalajuk Siang +2 more
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Experimental investigation on the solubility of R290 in two mineral oils
International Journal of Refrigeration, 2021Abstract Propane (R290) is considered as a promising substitute for R22 or R410A used in room air conditioners. In this work, the solubility of R290 in two mineral oils (3GS and 4GS) was measured at the temperatures from 253.15 K to 343.15 K using isochoric saturation method. The non-random two liquid activity coefficients model was used to correlate
Dongbo Wang, Xiaopo Wang, Xiucan Jia
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2015 International Conference on the Industrial and Commercial Use of Energy (ICUE), 2015
Refrigeration systems play paramount roles in life quality of human beings and social development in terms of food security, environmental impact, and energy efficiency. The traditional CFC, HCFC, and HFC refrigerants have been in the process of phase-out and being replaced by the sustainable working fluids.
Teboho Ramathe +2 more
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Refrigeration systems play paramount roles in life quality of human beings and social development in terms of food security, environmental impact, and energy efficiency. The traditional CFC, HCFC, and HFC refrigerants have been in the process of phase-out and being replaced by the sustainable working fluids.
Teboho Ramathe +2 more
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Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2023
A versatile vapor compression refrigeration (VCR) system is designed, developed and manufactured for testing different alternative refrigerants to R134a. The refrigerants such as R1234ze, R152a, R600a, R290 and mixture of R290/R600a (50/50) refrigerants are tested with an aluminum minichannel condenser which is designed for R134a.
Vijay W Bhatkar +2 more
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A versatile vapor compression refrigeration (VCR) system is designed, developed and manufactured for testing different alternative refrigerants to R134a. The refrigerants such as R1234ze, R152a, R600a, R290 and mixture of R290/R600a (50/50) refrigerants are tested with an aluminum minichannel condenser which is designed for R134a.
Vijay W Bhatkar +2 more
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Performance of heat pumps charged with R170/R290 mixture
Applied Energy, 2009Abstract In this study, thermodynamic performance of R170/R290 mixture is measured on a heat pump bench tester in an attempt to substitute R22. The bench tester is equipped with a commercial hermetic rotary compressor providing a nominal capacity of 3.5 kW. All tests are conducted under the summer cooling and winter heating conditions of 7/45 °C and −
Ki-Jung Park, Dongsoo Jung
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Measurements of the Surface Tension for the R290 + R32 Mixture
Journal of Chemical & Engineering Data, 2008There were no data of the surface tension for the R290 + R32 mixture which is expected as one of the new refrigerant mixtures, and its prediction is considered to be difficult because it is a mixture of a very polar molecule with a nonpolar molecule.
Katsuyuki Tanaka, Yukihiro Higashi
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R290 Refrigerant Performance in a Commercial Refrigerator
Çukurova Üniversitesi Mühendislik Fakültesi DergisiIn this study, we investigated the impact of the environmentally friendly R290 refrigerant, which has a higher Coefficient of Performance (COP), on the operating performance of the cooling system, as an alternative to the commonly used R404A refrigerant, which has a negative effect on global warming.
Turhan Saraç, Mahmut Ünaldı
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R290 HP-Module for Electric Vehicles
SAE Technical Paper Series<div class="section abstract"><div class="htmlview paragraph">Within this work a compact automotive heat pump module prototype with the natural refrigerant R290 (propane) is presented. R290 is non-toxic, has a low global warming potential (GWP) of 3, is environmentally friendly and is not affected by PFAS restrictions. Furthermore, R290 has
Alexej Pogorelov, Thorsten Reimers
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