Enhancement of Energy Efficiency Using Environmentally Benign Refrigerant Blends in Vapour Compression Refrigeration System

2020 ◽  
pp. 1021-1033
Author(s):  
P. Elumalai ◽  
R. Vijayan ◽  
V. Subburam ◽  
S. Maniraj
Keyword(s):  
Energy Efficiency ◽  
Environmentally Benign ◽  
Refrigeration System ◽  
Vapour Compression

Performance studies on vapour compression refrigeration system using PCM placed between wall and coil of the evaporator

2021 ◽  
pp. 095440892110627
Author(s):  
P. Saji Raveendran ◽  
R. Karthikeyan ◽  
P.C. Murugan ◽  
S. Sanjay ◽  
S. Vivek Raj ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Performance Studies ◽  
Energy Efficient ◽  
System Performance ◽  
Phase Change Materials ◽  
Temperature Fluctuations ◽  
Vital Role ◽  
Food Preservation ◽  
Refrigeration System ◽  
Vapour Compression

The vapour compression refrigeration system (VCRS) plays a vital role in the food preservation and it consumes more energy. The use of energy-efficient refrigerants, phase change materials (PCMs) in the condenser and evaporator, and the replacement of existing components, as well as nano-refrigerants, are all efforts made to increase the energy efficiency of the VCRS from different perspectives. Among them, the PCMs play a prominent role and gives sustainable energy efficiency in VCRS. This paper investigates and clarifies the energy efficiency of VCRS can be improved by incorporating a PCM into the evaporator cabin. The experimental results demonstrated substantial effects on system performance such as an improvement in COP of 7.1%, a decrease in per day energy consumption by 6.7%, and comparatively smaller temperature fluctuations within the freezer cabinet. The exergy efficiency is increased and Total Equivalent Warming Impact (TEWI) is decreasing than that of the system without PCM by 7.6 and 7% respectively. This technique is integrated into the VCRS, leading to savings in energy while also being useful for power interruptions common in areas with low grid reliability.

Optimum Choice of Refrigerant for Miniature Vapour Compression Refrigeration System

2011 ◽  
Vol 3 (3) ◽  
pp. 134-136
Author(s):  
M. M. Tayde M. M. Tayde ◽  
◽  
Pranav Datar ◽  
Pankaj kumar ◽  
Dr. L. B. Bhuyar Dr. L. B. Bhuyar
Keyword(s):  
Refrigeration System ◽  
Optimum Choice ◽  
Vapour Compression

Optimisation of ammonia refrigeration system by manipulating parameters of vapour compression cycle

2020 ◽  
Vol 6 (3) ◽  
pp. 275
Author(s):  
Arshad Hussain ◽  
Fareeha Shahdab ◽  
Sarah Farrukh ◽  
Luqman Rafiq ◽  
Uzair Ibrahim ◽  
...  
Keyword(s):  
Refrigeration System ◽  
Compression Cycle ◽  
Vapour Compression

A Remote Area Power Supply Using Wind Power and Cold Thermal Storage

2002 ◽  
Author(s):  
Kenneth C. Brown
Keyword(s):  
Energy Source ◽  
Power Supply ◽  
Rankine Cycle ◽  
Thermal Storage ◽  
Primary Objective ◽  
Remote Area ◽  
Working Fluid ◽  
Refrigeration Cycle ◽  
Refrigeration System ◽  
Vapour Compression

A remote area power supply using cold thermal storage and wind as the energy source is proposed. The primary objective is to provide a renewable energy remote area power supply with cheaper and more robust storage than lead-acid batteries. The proposal amalgamates a vapour compression refrigeration system with a Rankine cycle engine, both using the same working fluid. A tank of freezing brine acts as the condenser in the Rankine cycle and as the evaporator in the refrigeration cycle but also provides the “energy storage”. Analysis of the system indicates that it is practical and that its performance is comparable with existing battery based systems.

scholarly journals Cop Enhancement of Vapour Compression Refrigeration System

2021 ◽  
pp. 1-6
Author(s):  
B Sairamakrishna ◽  
◽  
T Gopala Rao ◽  
N Rama Krishna ◽  
◽  
...  
Keyword(s):  
Tube Diameter ◽  
Coefficient Of Performance ◽  
Refrigeration System ◽  
Expansion Valve ◽  
Compressor Inlet ◽  
Work Input ◽  
Compressor Work ◽  
Vapour Compression ◽  
Design And Testing ◽  
Nozzle Inlet

This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increases the pressure of the refrigerant before entering the compressor it will be helps to reduces the compression work and achieve higher performance of the vapour compression refrigeration system. Then nozzles are testing at condenser outlet, whereas nozzle inlet diameter equal to discharging tube diameter of condenser and outlet diameter equal to inlet diameter of expansion valve. Additional pressure drop in the nozzle helped to achieve higher performance of the vapour compression refrigeration system. The system is analyzes using the first and second laws of thermodynamics, to determine the refrigerating effect, the compressor work input, coefficient of performance (COP).

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