Parabolic trough solar collector for low enthalpy processes: An analysis of the efficiency enhancement by using twisted tape inserts
Por:
Jaramillo, O. A., Borunda, Monica, Velazquez-Lucho, K. M., Robles, M.
Publicada:
1 ago 2016
Categoría:
Renewable Energy, Sustainability and the Environment
Resumen:
Concentrated solar energy is a promising source of energy which is currently attracting many efforts to enhance its exploitation. In particular, parabolic trough collectors for low enthalpy processes is an emerging technology. Lately, many work is done focused on the improvement of these devices. One technique to achieve this is by augmenting the heat transfer in the receiver tube by inserting a twisted tape in the tube. In this work, we develop a thermodynamic model framework to analyse the performance of a parabolic trough collector with a twisted tape insert. We find the set of conditions under which a twisted tape insert is useful to boost the performance of a parabolic trough collector. This set of conditions corresponds to devices with low twisted ratios operating at low Reynolds numbers. The proposed model is supported with experimental data. © 2016 Elsevier Ltd.
Filiaciones:
Jaramillo, O. A.:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Priv Xochicalco S-N, Temixco 62580, Morelos, Mexico
Borunda, Monica:
Consejo Nacl Ciencia & Technol, CONACYT Res Fellow IIE, Ave Insurgentes 1582,Col Credit Construct, Del Benito Juarez 03940, DF, Mexico
Inst Invest Elect, Reforma 113,Col Palmira, Cuernavaca 62490, Morelos, Mexico
Velazquez-Lucho, K. M.:
Univ Veracruzana, Campus Xalapa,Lomas Estadio S-N,Col Zona Univ, Xalapa 91090, Veracruz, Mexico
Robles, M.:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Priv Xochicalco S-N, Temixco 62580, Morelos, Mexico
|