Results 181 to 190 of about 5,061 (219)
Some of the next articles are maybe not open access.
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
openaire +1 more source
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
openaire +1 more source
Multi-scale evaluation of an R290 variable geometry ejector
Applied Thermal Engineering, 2021Abstract Although representing a promising alternative to mechanical compressor driven systems, ejector refrigeration has not widely spread due to its limits due to the system operation's rigidity. Ejectors are fluid-dynamics controlled devices and because of their fixed geometry, operates at their best efficiency in a narrow range of operating ...
Besagni G., Cristiani N.
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Ticari Buzdolabında R290 Soğutucu Akışkan Performansı
2023In 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.
Saraç, Turhan, Ünaldı, Mahmut
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Research on flammability of R290/R134a, R600a/R134a and R600a/R290 refrigerant mixtures
International Journal of Refrigeration, 2022Dehua Cai, Zian Hao, Hao Xu, Guogeng He
openaire +1 more source
The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
openaire +1 more source
openaire +1 more source
ABOUT EFFICIENCY OF MIXTURES R125/R290 AND R134a/R290 AS WORKING MEDIA OF REFRIGERATING PLANTS
Industrial Gases, 2015The thermodynamic behavior of mixtures R125/R290 and R134a/R290 having different composition in saturation state was considered. The existence of aseotropic mixtures containing 0,6 molar part of R125 and 0,4 molar part of R134a was mentioned. The dependences of saturated vapor and liquid temperatures` differences of mixtures on isobars from pressure ...
openaire +1 more source