Year 2016, Volume 19, Issue 4, Pages 214 - 224 2016-12-01

Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate

Radha Krishna Prasad [1] , Mukesh Kumar Sahu [2]

183 208

This paper presents an investigation on optimal thermohydraulic performance of a solar air heater having arc-shaped wire rib roughness on underside of the absorber plate. The use of artificial roughness on the absorber plate of a solar air heater causes enhancement in rate of the heat transfer between absorber plate and flowing air, by creating turbulence, however, there is substantial increase in the frictional resistance which leads to more pumping power consumption. The effective efficiency is evaluated on the basis of useful thermal energy gain minus equivalent thermal energy to the power required to propel the air through solar air heaters. A mathematical model and procedure for prediction of effective efficiency of an arc shaped wire rib roughened absorber plate solar air heater has been presented and the effects of roughness and various geometrical and operating parameters on effective efficiency have been worked out. The effective efficiency of the roughened absorber plate solar air heater has also been compared with smooth absorber plate solar air heater operating under similar conditions. It is observed that effective efficiency of a roughened solar air heater has an optimum value corresponding to a certain Reynolds number and specific values of operating and geometrical conditions. A correlation between system and operating parameters that delivers optimum effective efficiency has been developed and presented, which can be used for optimal design of such systems.
Effective efficiency, Artificial roughness, Solar air heater, Arc shaped wire rib roughness
Journal Section Regular Original Research Article
Authors

Author: Radha Krishna Prasad

Author: Mukesh Kumar Sahu

Dates

Publication Date: December 1, 2016

Bibtex @ { ijot277772, journal = {International Journal of Thermodynamics}, issn = {1301-9724}, eissn = {2146-1511}, address = {Uluslararası Uygulamalı Termodinamik Derneği İktisadi İşletmesi}, year = {2016}, volume = {19}, pages = {214 - 224}, doi = {10.5541/eoguijt.277772}, title = {Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate}, key = {cite}, author = {Prasad, Radha Krishna and Sahu, Mukesh Kumar} }
APA Prasad, R , Sahu, M . (2016). Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate. International Journal of Thermodynamics, 19 (4), 214-224. Retrieved from http://dergipark.org.tr/ijot/issue/26363/277772
MLA Prasad, R , Sahu, M . "Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate". International Journal of Thermodynamics 19 (2016): 214-224 <http://dergipark.org.tr/ijot/issue/26363/277772>
Chicago Prasad, R , Sahu, M . "Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate". International Journal of Thermodynamics 19 (2016): 214-224
RIS TY - JOUR T1 - Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate AU - Radha Krishna Prasad , Mukesh Kumar Sahu Y1 - 2016 PY - 2016 N1 - DO - T2 - International Journal of Thermodynamics JF - Journal JO - JOR SP - 214 EP - 224 VL - 19 IS - 4 SN - 1301-9724-2146-1511 M3 - UR - Y2 - 2019 ER -
EndNote %0 International Journal of Thermodynamics Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate %A Radha Krishna Prasad , Mukesh Kumar Sahu %T Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate %D 2016 %J International Journal of Thermodynamics %P 1301-9724-2146-1511 %V 19 %N 4 %R %U
ISNAD Prasad, Radha Krishna , Sahu, Mukesh Kumar . "Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate". International Journal of Thermodynamics 19 / 4 (December 2016): 214-224.
AMA Prasad R , Sahu M . Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate. International Journal of Thermodynamics. 2016; 19(4): 214-224.
Vancouver Prasad R , Sahu M . Investigation on optimal thermohydraulic performance of a solar air heater having arc shaped wire rib roughness on absorber plate. International Journal of Thermodynamics. 2016; 19(4): 224-214.