International Journal of Vehicle Structures and Systems

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Effect of Humidity on Condensation in Vapour Compression Refrigeration System for Fresh Foods Transport Vehicles


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1 Dept. of Mech. Engg., Sengunthar Engg. College, Erode, Tamil Nadu, India
 

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In today’s world the developed countries rely on the refrigerated container (reefer) vehicles for the transportation of cold chain products such as fresh foods. In India this technology was introduced in late 1980s but the growth was very slow compared to other countries and failed to match the international trends. However recently, with fast development of roadways, urbanisation and connectivity the reefers get a massive response. The reefers have several advantages but they consume considerable amount of electrical energy to operate. Reefer works based on vapour compression refrigeration cycle in which condenser is an important device. This condenser uses fan-blown atmospheric air over it to remove vaporization heat from refrigerant. The temperature of refrigerant after condensation has effects on Coefficient of performance (COP) of the refrigeration system. This temperature can be altered by the relative humidity of air. The result of our project shows that the increase in air humidity by 18.60% increases the COP by 11.37% and also it reduces the power consumption.

Keywords

Refrigerated Container Vehicles, Relative Humidity, Refrigeration, Condenser, Dry-Bulb Temperature.
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  • R.H.K. Doaa and R. Gebaly. 2016. Performance improvement of vapour compression cooling systems using evaporative condenser, Renewable and Sustainable Energy, 58, 347-360. https://doi.org/10.1016/j.rser.2015.12.313.

  • K.A. Jahangeer, A.O. Andrew and Md. Raisul. 2011. Numerical investigation of transfer coefficients of an evaporative cooled condenser, Applied Thermal Engg., 31, 1655-1663. https://doi.org/10.1016/j.applthermaleng.2011.02.007.

  • R.J. Dossat. 2004. Principles of Refrigeration, Emus, Sao Paulo, Brazil.

  • P.M. Sobrinho. 2013. Experimental research on the influence of the air humidity conditions in an air conditioning system, Experimental Thermal & Fluid Sci., 49, 152-159. https://doi.org/10.1016/j.expthermflusci.2013.04.013.

  • T. Bohdal. 2000. Bubble boiling of environment-friendly refrigeration media, Int. J. Heat & Fl. Flow, 4(21), 449-455. https://doi.org/10.1016/S0142-727X(00)00026-6.

  • T. Bohdal. 2001. An investigation of bubbly boiling of environment friendly refrigerating media, Int. J. Heat Transfer Engg., 22(6), 26-39. https://doi.org/10.1080/014576301317048415.

  • M.K. Dobson and J.C. Chato. 1998. Condensation in smooth horizontal tubes, J. Heat Transfer, 120, 193-213. https://doi.org/10.1115/1.2830043.

  • J.B. Joung. 1995. The fundamental equations of gas-droplet multiphase flow, An Int. J. Multiphase Flow, 21(2), 175-191. https://doi.org/10.1016/03019322(94) 00078-X.

  • T. Bohdal. 2006. Condensation of a refrigeration medium in the presence of an inert gas, Applied Thermal Engg., 26, 1942-1950. https://doi.org/10.1016/j.applthermaleng.2006.01.009.

  • A.C. Kappel and W.P. Niekrasow. 1977. Heat transfer during condensation of Freon R22 on a horizontal tube under presence of a non-condensing gas, Chołodilnaja Tiechnika, 8, 23.

  • J. Tissot. 2011. Air cooling by evaporating droplets in the upward flow of a condenser, Int. J. Thermal Sci., 50, 2122-2131. https://doi.org/10.1016/j.ijthermalsci.2011.06.004.

  • N.I. Ibrahim, A.A. Al-Farayedhib and P. Gandhidasan. 2017. Experimental investigation of a vapour compression system with condenser air pre cooling by condensate, Applied Thermal Engg., 110, 1255-1263. https://doi.org/10.1016/j.applthermaleng.2016.09.042.


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  • Effect of Humidity on Condensation in Vapour Compression Refrigeration System for Fresh Foods Transport Vehicles

Abstract Views: 356  |  PDF Views: 154

Authors

Nagarajan Sendrayaperumal
Dept. of Mech. Engg., Sengunthar Engg. College, Erode, Tamil Nadu, India
Ganesh Rathinavel
Dept. of Mech. Engg., Sengunthar Engg. College, Erode, Tamil Nadu, India
Arunagirinathan Vijayarangan
Dept. of Mech. Engg., Sengunthar Engg. College, Erode, Tamil Nadu, India
Kannan Natarajan
Dept. of Mech. Engg., Sengunthar Engg. College, Erode, Tamil Nadu, India

Abstract


In today’s world the developed countries rely on the refrigerated container (reefer) vehicles for the transportation of cold chain products such as fresh foods. In India this technology was introduced in late 1980s but the growth was very slow compared to other countries and failed to match the international trends. However recently, with fast development of roadways, urbanisation and connectivity the reefers get a massive response. The reefers have several advantages but they consume considerable amount of electrical energy to operate. Reefer works based on vapour compression refrigeration cycle in which condenser is an important device. This condenser uses fan-blown atmospheric air over it to remove vaporization heat from refrigerant. The temperature of refrigerant after condensation has effects on Coefficient of performance (COP) of the refrigeration system. This temperature can be altered by the relative humidity of air. The result of our project shows that the increase in air humidity by 18.60% increases the COP by 11.37% and also it reduces the power consumption.

Keywords


Refrigerated Container Vehicles, Relative Humidity, Refrigeration, Condenser, Dry-Bulb Temperature.

References





DOI: https://doi.org/10.4273/ijvss.10.4.14