Search Results - subject:"Collector efficiency"

Collector Efficiency in Downward-Type Internal-Recycle Solar Air Heaters with Attached Fins

Yeh, Ho-Ming; Ho, Chii-Dong - In: Energies 6 (2013) 10, pp. 5130-5144

The internal-recycle operation effect on collector efficiency in downward-type rectangular solar air heaters with … attached fins is theoretically investigated. It is found that considerable collector efficiency is obtainable if the collector …

Persistent link: https://www.econbiz.de/10010699641

Collector Efficiency in Downward-Type Double-Pass Solar Air Heaters with Attached Fins and Operated by External Recycle

Yeh, Ho-Ming; Ho, Chii-Dong - In: Energies 5 (2012) 8, pp. 2692-2707

The collector efficiency in a downward-type double-pass external-recycle solar air heater with fins attached on the … absorbing plate has been investigated theoretically. Considerable improvement in collector efficiency is obtainable if the …

Persistent link: https://www.econbiz.de/10010668119

Mathematical modelling of counter flow v-grove solar air collector

Karim, M.A.; Perez, E.; Amin, Z.M. - In: Renewable Energy 67 (2014) C, pp. 192-201

Double-pass counter flow v-grove collector is considered one of the most efficient solar air-collectors. In this design of the collector, the inlet air initially flows at the top part of the collector and changes direction once it reaches the end of the collector and flows below the collector to...

Persistent link: https://www.econbiz.de/10010803765

Experimentally derived efficiency and exergy analysis of a new solar air heater having different surface shapes

Benli, Hüseyin - In: Renewable Energy 50 (2013) C, pp. 58-67

The aim of this study is to provide a remedy for the low thermo-physical properties of air which is used as different absorber surface of air heater. This paper presents an experimental investigation on the absorber surface of the collector whose shape and arrangement were made up to provide...

Persistent link: https://www.econbiz.de/10011044506

Performance studies of a solar parabolic trough collector with a thermal energy storage system

Kumaresan, Govindaraj; Sridhar, Rahulram; Velraj, Ramalingom - In: Energy 47 (2012) 1, pp. 395-402

Concentrating collectors are used primarily for power generation applications, though recent applications include industrial process heating and institutional cooking. In the present work an experimental study is carried out to investigate the performance of a solar parabolic trough collector...

Persistent link: https://www.econbiz.de/10011054254

Thermal performance analysis of a direct-expansion solar-assisted heat pump water heater

Kong, X.Q.; Zhang, D.; Li, Y.; Yang, Q.M. - In: Energy 36 (2011) 12, pp. 6830-6838

, system COP and collector efficiency. Comparisons between the simulation results and the experimental measurements show that …

Persistent link: https://www.econbiz.de/10011055003

Effect of external recycle on the performances of flat-plate solar air heaters with internal fins attached

Yeh, Ho-Ming; Ho, Chii-Dong - In: Renewable Energy 34 (2009) 5, pp. 1340-1347

The influence of external recycle on the collector efficiency in solar air heaters with internal fins attached, has …, which is bad for performance. It is found that considerable improvement in collector efficiency is obtainable if the …

Persistent link: https://www.econbiz.de/10010804905

Experimental performance analysis and optimization of a direct expansion solar-assisted heat pump water heater

Li, Y.W.; Wang, R.Z.; Wu, J.Y.; Xu, Y.X. - In: Energy 32 (2007) 8, pp. 1361-1374

In this study, a direct expansion solar-assisted heat pump water heater (DX-SAHPWH) with rated input power 750W was tested and analyzed. Through experimental research in spring and thermodynamics analysis about the system performance, some suggestions for the system optimization are proposed....

Persistent link: https://www.econbiz.de/10010811197

Performance analysis of new-design solar air collectors for drying applications

Karsli, Suleyman - In: Renewable Energy 32 (2007) 10, pp. 1645-1660

-IV. The values of second law efficiency varied from 0.27 to 0.64 for all collectors? The highest collector efficiency and air …

Persistent link: https://www.econbiz.de/10011045701

Heat loss through the piping of a large solar collector field

El-Nashar, Ali M. - In: Energy 31 (2006) 12, pp. 2020-2035

effect of this loss on the effective collector efficiency is evaluated. The data are used to develop a model that can be used … to evaluate the effect of piping loss on collector efficiency for solar field of different areas. The collector field … that a drop in the collector efficiency occurs due to this heat loss. The effect of the heat loss on the collector …

Persistent link: https://www.econbiz.de/10010809048