Abstract
In this paper, a stationary solar thermal collector system using an evacuated glass and a counter-flow tube for medium is modeled, analyzed, fabricated, and tested. The proposed non-tracking system consists of an evacuated counter-flow type absorber paired with an external compound parabolic concentrators (XCPC) as a non-imaging reflector. This configuration allows the system to operate with a high solar thermal efficiency for medium working temperature (100-300. °C). Efficiencies for both East-West and North-South orientations are modeled and measured at various working temperatures. Simulation and experimental test results show that the proposed configuration outperforms other non-tracking solar thermal systems and can achieve more than 40% efficiency above 200. °C.
Original language | English |
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Pages (from-to) | 1071-1079 |
Number of pages | 9 |
Journal | Applied Energy |
Volume | 111 |
DOIs | |
Publication status | Published - 2013 Nov |
Externally published | Yes |
Bibliographical note
Funding Information:This work was supported by the California Energy Commission under Grant CEC-500-05-021.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
Keywords
- Collector
- Compound parabolic concentrator
- Counter-flow
- Evacuated tube
- Orientation
- Solar thermal
ASJC Scopus subject areas
- Mechanical Engineering
- General Energy
- Management, Monitoring, Policy and Law
- Building and Construction