Results 111 to 120 of about 765 (158)
Some of the next articles are maybe not open access.
Experimental Study on Throttling Refrigeration System Using Mixed Refrigerants
Applied Mechanics and Materials, 2014This experiment applied to the Linder refrigeration with subcooler and used the new pentabasic refrigerants (N2/CH4/C2H4/C3H8/iC4H10).It can basically achieve the cryogenic temperature of 170k and has the advantages of simple structure and low manufacturing cost.
Zhao Feng Meng +4 more
exaly +2 more sources
The Preliminary Study on Mixed Refrigerants of a Four-Stage Auto-Cascade Refrigeration
Applied Mechanics and Materials, 2013A four-stage auto-cascade refrigeration cycle is presented in this paper, the kind of mixed refrigerants is chosen and the proportion is simulated by using the commercial software NIST8.0 software. The optimized proportion of mixed refrigerants is gained through experiment, a method which combining software simulation and experiment to define mixed ...
Rui Xi Liu +4 more
exaly +2 more sources
International Journal of Refrigeration, 2017
Abstract A diffusion absorption refrigerator (DAR) operating with mixed fluoride refrigerants was built to obtain low refrigerating temperature at low generating temperature. Two groups of mixed fluoride refrigerants, R23/R134a and R23/R32/R134a, were tested experimentally.
G M Chen
exaly +2 more sources
Abstract A diffusion absorption refrigerator (DAR) operating with mixed fluoride refrigerants was built to obtain low refrigerating temperature at low generating temperature. Two groups of mixed fluoride refrigerants, R23/R134a and R23/R32/R134a, were tested experimentally.
G M Chen
exaly +2 more sources
Optimization of a vapor injection refrigeration cycle using hydrocarbon mixed refrigerants
International Journal of Refrigeration, 2019Abstract Refrigeration systems are major consumers of electrical energy in many process industries. Hydrocarbons have regained interest as refrigerants because of the increasing restrictions applied to halogenated fluids. In this work, the use of hydrocarbons mixed refrigerants and an alternative flash tank with vapor injection (FTVI) refrigeration ...
Stella Maia Rocha de Carvalho +4 more
exaly +2 more sources
The Effect of Refrigerants in the Mixed Lubrication Regime
1997Because of environmental concerns, CFC (chlorofluorocarbon) refrigerants must be replaced with HFCs (hydrofluorocarbons.) As a result, many tribological problems are caused especially in rotary piston compressors. To solve the problem, the effects of refrigerants on friction and wear characteristics of the oil and refrigerant mixtures at the mixed ...
K Mizuhara, M Tomimoto
exaly +2 more sources
Testing of the mixing refrigerants HFC152a/HFC125 in domestic refrigerator
Applied Thermal Engineering, 2005Abstract The performances of a refrigeration cycle of a 1,1-difluoroethane/pentafluoroethane (HFC152a/HFC125) mixture used as a refrigerant for domestic refrigerators were calculated and analyzed in detail. The results of the theoretical analysis indicate that the HFC152a/HFC125 mixture in the composition of 0.85 mass fraction of HFC152a has a ...
Mao-Gang He +3 more
openaire +1 more source
Heat Transfer Engineering, 2020
As the use of semiconductors in industrial site increases, research on ultra-low refrigerators is required to increase the life and quality of the semiconductors.
Kwang-Seok Lee +6 more
openaire +1 more source
As the use of semiconductors in industrial site increases, research on ultra-low refrigerators is required to increase the life and quality of the semiconductors.
Kwang-Seok Lee +6 more
openaire +1 more source
Synthesis of Mixed Refrigerant Cascade Cycles
Chemical Engineering Communications, 2002This paper considers the synthesis of refrigeration systems with refrigerant mixtures as working fluids. The employed refrigeration topology encompasses features from industrial liquefaction of natural gas (LNG) systems. This configuration consists of a combination of horizontal and vertical cascades generalizing the vertical cascade of pure ...
Shankar Vaidyaraman, Costas D. Maranas
openaire +1 more source
Environmental Science and Pollution Research, 2022
This paper presents the environment-friendly mixture compositions of hydrocarbons (HC)- and hydrofluorocarbon (HFC)-based ternary mixtures that can be better alternatives for R134a in domestic refrigeration units. Combustible refrigerant HCs (R290, R600, R600a) and HFCs (R152a and R161) are used along with the dilutants R13I1, R245fa, R134a, R227ea ...
Nagarjuna, Kumma +1 more
openaire +2 more sources
This paper presents the environment-friendly mixture compositions of hydrocarbons (HC)- and hydrofluorocarbon (HFC)-based ternary mixtures that can be better alternatives for R134a in domestic refrigeration units. Combustible refrigerant HCs (R290, R600, R600a) and HFCs (R152a and R161) are used along with the dilutants R13I1, R245fa, R134a, R227ea ...
Nagarjuna, Kumma +1 more
openaire +2 more sources
Case Studies in Thermal EngineeringMixed refrigerant (MR) Cascade Refrigeration Systems are widely employed in industries requiring both extremely low temperatures and large cooling capacity, such as semiconductors and displays.
Chang-Hyo Son +2 more
exaly +3 more sources