Experimental Analysis of the Vapour Compression Refrigeration System with Microchannel Condenser using R134a and R1234yf Refrigerant

Vapour Compression Refrigeration (VCR) system with high COP, low input power consumption and minimal exergy losses are of great research hotspot. The current research focuses on analysis of exergy and performance of vapour compression refrigeration (VCR) cycle is in a real-world application. Experiments were carried out in the VCR system using round tube condenser and microchannel condenser along with different refrigerants R134a, and R1234yf. Temperatures were varied from +20°C to 5°C for the evaporator and 40°C to 50°C for the condenser. Among the two refrigerants, experimental results show that refrigerants operating in micro-channel condensers have COP of 6% and 4%greater higher with5% and 3% lower exergy loss compared to the round tube condenser for R134a and R1234yf respectively.R1234yf appears to be a better equivalent for R134a, according to the findings. The efficiency defect in the condenser is the greatest and least in the evaporator for the coolants examined.

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Experimental Analysis on Vapour Compression Refrigeration System Using Nanolubricant with HFC-134a Refrigerant

Nano Hybrids ◽

10.4028/www.scientific.net/nh.9.33 ◽

2015 ◽

Vol 9 ◽

pp. 33-43 ◽

Cited By ~ 6

Author(s):

A. Manoj Babu ◽

S. Nallusamy ◽

K. Rajan

Keyword(s):

Energy Consumption ◽

System Performance ◽

Mineral Oil ◽

Coefficient Of Performance ◽

Refrigeration System ◽

Hfc 134A ◽

Reduce Energy Consumption ◽

And Performance ◽

Vapour Compression ◽

Better Than

This paper investigates the reliability and performance of a refrigeration system using nanolubricant with 1, 1, 1, 2-Tetrafluoroethane (HFC-134a) refrigerant. Mineral Oil (MO) is mixed with nanoparticles such as Titanium Dioxide (TiO2) and Aluminium Oxide (Al2O3). These mixtures were used as the lubricant instead of Polyolester (POE) oil in the HFC-134a refrigeration system as HFC-134a does not compatible with raw mineral oil. An investigation was done on compatibility of mineral oil and nanoparticles mixture at 0.1 and 0.2 grams / litre with HFC-134a refrigerant. To carry out this investigation, an experimental setup was designed and fabricated in the lab. The refrigeration system performance with the nanolubricant was investigated by using energy consumption test. The results indicate that HFC-134a and mineral oil with above mentioned nanoparticles works normally and safely in the refrigeration system. The refrigeration system performance was better than the HFC-134a and POE oil system. Thus nanolubricant (Mixture of Mineral Oil (MO) and nanoParticles) can be used in refrigeration system to considerably reduce energy consumption and better Coefficient of Performance (COP).

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Numerical Simulation and Performance Assessment of a Nanoparticle Enhanced Vapour Compression Refrigeration System

Journal of Power and Energy Engineering ◽

10.4236/jpee.2021.911002 ◽

2021 ◽

Vol 09 (11) ◽

pp. 33-49

Author(s):

Moradeyo K. Odunfa ◽

Oluwaseyi D. Oseni

Keyword(s):

Numerical Simulation ◽

Performance Assessment ◽

Refrigeration System ◽

And Performance ◽

Vapour Compression

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A Review of a Mechanical Vapour Compression Refrigeration System: Environment and Performance Challenge

Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020 ◽

10.4108/eai.28-6-2020.2298158 ◽

2020 ◽

Author(s):

Yaser Mahmood

Keyword(s):

Refrigeration System ◽

System Environment ◽

And Performance ◽

Performance Challenge ◽

Vapour Compression

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Theoretical estimation of efficiency defect in Vapour Compression Refrigeration system using R1234yf, R134a and R1234ze

E3S Web of Conferences ◽

10.1051/e3sconf/202130901138 ◽

2021 ◽

Vol 309 ◽

pp. 01138

Author(s):

Shubham Soni ◽

Punit Mishra ◽

Govind Maheshwari ◽

Devendra S Verma

Keyword(s):

Mathematical Model ◽

Exergy Analysis ◽

Refrigeration System ◽

Theoretical Estimation ◽

Evaporator Temperature ◽

System A ◽

Efficiency Defect ◽

Vapour Compression

In presented work, researchers have used efficiency defect as a tool for checking the utility of different refrigerants in Vapour compression refrigeration system. A mathematical model of simple Vapour compression refrigeration system is created. Using first law analysis and exergy analysis efficiency defect is calculated for various components of the system individually and whole vapour compression refrigeration system as well. It is found that R1234yf has highest value of efficiency defect for whole system, whereas R134a has least value of efficiency defect for whole system. Variation of efficiency defect of various components with evaporator temperature is also presented as graphs.

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Experimental Research on Improvement of Battery Reliability

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b2145.078219 ◽

2019 ◽

Vol 8 (2) ◽

pp. 2035-2037

Keyword(s):

Battery Life ◽

Refrigeration System ◽

Battery System ◽

Harsh Environmental Condition ◽

Heat Transfer Simulation ◽

And Performance ◽

Reliability Performance ◽

Compact Design ◽

Vapour Compression ◽

Initial Concept

The heat control and maintenance of batteries is essential for effective operation of UPS in harsh environmental condition since battery working reliability ,performance, durability and its economy is directly related to the environmental temperature and air flow around batteries .Therefore, ideally, batteries should be use within its comfortable temperature range to get its optimum performance. Compact design of Batteries in enclosed environments necessitates thermal management of the battery system for optimum life and performance. This invention proposes an efficient vapour compression refrigeration system to effectively cool the batteries and maintain optimum battery surface temperature of 25 °C for better performance and extended battery life at 40°C external ambient temperature. Moreover Silica gel based Solid desiccant wheel is used to absorb moisture from air so that condensation in the battery cabinet can be minimized .Computational fluid dynamics and heat transfer simulation was performed to devise a initial concept. Experimental validation of the prototype was made to verify simulation results and actual temperature distribution.

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Design of Evaporator Coil and Performance Evaluation of Vapour Compression Refrigeration System with Three Layer Evaporator

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.36096 ◽

2021 ◽

Vol 9 (VI) ◽

pp. 5130-5133

Author(s):

Mandave Ganesh

Keyword(s):

Performance Evaluation ◽

Refrigeration System ◽

Refrigerant Capacity ◽

And Performance ◽

Vapour Compression

The performance of a vapour compression refrigeration system with a three-layer zigzag evaporator is evaluated in this research. The primary goal of this study is to compare the performance of a household refrigerator with a capacity of 165 litres, R-12as refrigerant, and a three layer zigzag shaped evaporator to that of an existing system. The refrigerant capacity of this evaporator assembly is maximised.

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