R-134a
The performance of the refrigerants R-134a, R-290, R404a, R-407c and R-410a in air conditioners and refrigerators
... for R-22 is a challenging task since no one substitute fits all ...are: R-134a, (Sanvorderdenker 1997), R-404A (Weiss and Goguet 1997), R-407C (Kruse and Tiedemann 1997), and ...
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Experimental Investigation of Granular Activated Carbon/R 134a Pair for Adsorption Cooling System Applications
... The goal of the experimental procedure is to obtain ad- sorption characteristics relating to the equilibrium ad- sorption capacity of the granule activated carbon/R-134a pair. These characteristics are ...
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Optimization through Mathematical Modelling of Irreversibility and Other Parameters in Simple VCR cycle for R 134a
... various other parameters is carried out through mathematical modeling for simple vapor compression refrigeration cycle using the properties of refrigerant R 134a. The study was carried out with the starting ...
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Cost-Effective COP Enhancement of a Domestic Air Cooled Refrigerator using R-134a Refrigerant
... Abstract— This paper presents a cost-effective method to increase the COP and utility of a domestic refrigerator using R-134a refrigerant. A cabin was installed on the top of a domestic refrigerator with ...
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Temperature distribution of R 134a through aluminum and PTFE expansion valve on automotive air conditioning applications
... of R- 134a refrigerant before and after the expansion valve was observed to determine its effect in comparison with expansion valve made of aluminum ...
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Performance Analysis of R 134a with ECO Friendly Refrigerant in Vapour Compression Refrigeration Cycle
... The basis of replacement is to analyze an ice plant working on R134a as refrigerant. Pressure and temperature reading of the plant has been taken. Based on the working pressure and temperature theoretical cop of the ...
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REPLACEMENT OF R-134a WITH ENVIRONMENT FRIENDLY REFRIGERANT IN VAPOUR COMPRESSION REFRIGERATION CYCLE
... The aim of this study is to provide a detailed insight into the characteristics of robust mechanism for preparing a new eco-friendly mixture of refrigerant as a replacement of R-134A. We proposed a new ...
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An Experimental study of the analyzing the COP of Refrigerants R-22/R-134a by Weight30/70 and R-22/R-410a by Weight30/70
... Nowadays due to increase in population, industrialization, pollution and global warming effects the temperature of earth surface is going higher and higher. Due to which it is becoming very difficult to survive in this ...
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Experimental Analysis of Vapour Compression Refrigeration System with Superheating by using R 134a, R 12, R 717 Refrigerant
... G. maruthiprasad yadav et al: in this paper author uses liquid line heat exchanger to improve the performance of the VCRS system. authored said if uses liquid line heat exchanger increase refrigeration effect 3.81% by ...
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Experimental Analysis of Suction Line Heat Exchanger by Using R 134a
... The main objective of this project is to evaluate the performance of refrigerator with suction line heat exchanger of 35cm length by using R-134a as refrigerant. In the proposed system with suction line ...
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Butane, isobutane and their mixtures as an alterantives to R 134a in domestic refrigerator
... Figure 9 Effect of evaporator temperature on refrigerating effect at 28°C ambient temperature The evaporator temperature versus work of compression is shown in Figures 10 and 11. The Figures show that the work of ...
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Investigation of Forced Convection Boiling Heat Transfer for R-134a Flow in a Vertical Tube Filled by Metal Foam
... Abstract— forced convection boiling heat transfer in vertical tube filled by metal foam for Refrigerant(R-134a) (the working fluid was used because it is zero ozone depletion) is numerically investigated ...
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Study of Coefficient of Heat Transfer of R 1234yf, R 410a as an Alternative Refrigerant to R 134a and R12
... 2) Bohdal et al Correlation (2011): Bohdal have developed their own experimental correlation with the use of mathematical statics principals and with a selection of the model’s parameters with Quasi-Newton and simplex ...
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Enhancement of COP by using Liquid Line Suction Line Heat Exchanger at Various Lengths with Refrigerant R 134a
... Heat to be rejected in condenser is increased for different lengths of liquid line-suction line heat exchanger and at the length of heat exchanger of 30 cm is high for R134a is 301.74 pe[r] ...
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Theoretical investigation of the evaporation heat transfer cofficient of refrigerant R-134a in a plate heat exchanger
... CONCLUSIONS The R-1 34a in present work studies the evaporation a plate information transfer of heat and experimental fluid in smooth expanding heat transfer Several the literature studi[r] ...
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Design and Analysis of Ejector Refrigeration System using R 134a Refrigerant
... Thermal design data of evaporator coil Type Cooling load on coil Mass flow of airma Mass flow of refrigerantmr Surface matrix configuration Tube OD ,cm Tube ID,cm Fin thickness ,cm Fin a[r] ...
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Experimental Investigation of Ejector Expansion Refrigeration System Using Refrigerant R 134a
... Experimentation is carried out the effect of evaporation and condensation temperature on system parameters by using ejector expansion cycle such as pressure lift, compressor power, COP, [r] ...
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Performance Enhancement of Domestic Refrigerator Using Hydrocarbon Mixture R 436A as Refrigerant
... refrigerant R-436a is higher as compared to that of refrigerant R-134a by about ...refrigerant R-436a is lower as compared to that of refrigerant R-134a by about ...
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Non-CFC refrigerants ; first and second law efficiencies
... - R-123 and R-134a - stressed about analytical relations for the thermodynamic properties, enthalpy, entropy, and heat capacities at constant pressure and temperature of the replacement refrigerants ...
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Comparative Analysis of Different Refrigerants in a Water Cooler Test Rig
... using R-134a, R-413A and blend of R-290 and R-600a in Water cooler at a load ...condition. R-134a and R-413A having zero ODP but High GWP and blend of ...
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