• Jai Parkash

The ability of nano-refrigerants to enhance the thermo-hydraulic properties of refrigerants, achieved the curiosity of researchers to contribute their useful efforts in this era. The involvement of ultrafine sized particle (1-100 nm) of metal oxide in a conventional refrigerant as a colloidal solution is recognized as a nano-refrigerant. The CuO nano-particle is considered for the comparison of specific heat. This nano-particle is applied in different refrigerants R11, R12, R22, R134a and R141b at volumetric concentration 1%-5%. The evaporators are usually working with pressure upto 0.3 MPa with temperature limits of 190K-269K. The database related to different properties of refrigerant for the calculations and analysis taken from National Institute of Standards & Technology (NIST). Pak and Cho[10] equation is considered for the calculation of specific heat at different volume of nano particles in percentage. The specific heat falls with the involvement of nano-particles and rises with the gain in temperature. The addition of the nano-particle has also shown the enhancement in other properties also.

Refrigerant, Nano-Particles, Refrigeration System

"A Comparative Analysis of Variation in Specific Heat of CuO based Nano-Refrigerants", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.1179-1184, April-2019, Available :http://www.jetir.org/papers/JETIREL06173.pdf

"A Comparative Analysis of Variation in Specific Heat of CuO based Nano-Refrigerants", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp1179-1184, April-2019, Available at : http://www.jetir.org/papers/JETIREL06173.pdf