• D.Subbaiah
• Dr.M.Adinarayana
• N.VENKATRAMANA REDDY
• Y.SRINATH

Micro-fin tubes are characterized by high heat transfer coefficients, low pressure drop penalty, less material consumption in manufacturing and reduction of refrigerant charge. Due to these excellent advantages, micro-fin tubes are widely used in residential air-conditioners and automobile cooling systems. Air conditioner condensers are a heat exchanger device; AC condenser units are grouped according to how it rejects the heat to the medium (surround air). The primary component of a condenser is typically the condenser coil, through which the refrigerant flows. Since, the AC condenser coil contains refrigerant that absorbs heat from the surrounding air, the refrigerant temperature must be higher than the air. In this thesis, analytical investigations are performed to determine boiling characteristics in micro-fin tubes for different refrigerants R22, R134A, R407C and R410A. The performance of the micro fin tubes is determined by changing fin heights 5mm and 3mm. 3D models of the tubes are done in 3D modeling software Creo 2.0. CFD and Thermal analysis is performed on the tube to determine the heat transfer coefficients, pressure drop and heat transfer rates. Thermal analysis is performed for different materials Aluminum alloy, Copper alloy and Titanium alloy. Analysis is done in Ansys.

ANALYTICAL INVESTIGATIONS OF BOILING HEAT TRANSFER IN SMOOTH MICRO-FIN TUBES OF DIFFERENT REFRIGERANTS

"ANALYTICAL INVESTIGATIONS OF BOILING HEAT TRANSFER IN SMOOTH MICRO-FIN TUBES OF DIFFERENT REFRIGERANTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 2, page no.483-487, February-2018, Available :http://www.jetir.org/papers/JETIR1802078.pdf

"ANALYTICAL INVESTIGATIONS OF BOILING HEAT TRANSFER IN SMOOTH MICRO-FIN TUBES OF DIFFERENT REFRIGERANTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 2, page no. pp483-487, February-2018, Available at : http://www.jetir.org/papers/JETIR1802078.pdf