A novel quasi-stationary CPC-type solar collector for intermediate temperature range applications for process heat: Simulation and experimental results
| Autor: | Joao Marcha, Antonio Victor Campos Coelho, Ricardo Lopes Pereira, Jorge José de Souza Pereira, Tiago Osório, Manuel Collares-Pereira, Tiago Eusébio, Ricardo Silva |
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| Rok vydání: | 2019 |
| Předmět: |
Stagnation temperature
Range (particle radiation) Thermal efficiency Materials science business.industry 020209 energy Nuclear engineering Tracking system Reflector (antenna) 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology Tracking (particle physics) 7. Clean energy Operating temperature 0202 electrical engineering electronic engineering information engineering 0210 nano-technology business |
| Zdroj: | SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems |
| ISSN: | 0094-243X |
| DOI: | 10.1063/1.5117662 |
| Popis: | The solar collector options available on the market for the intermediate temperature range (100 °C to 200 °C) are limited and mostly based on the upper temperature limits attainable with stationary technologies or with higher concentration technologies adapted to a lower temperature application range. A new solar collector was developed specially for this temperature range based on the quasi-stationary (seasonally tracking) concept with a non-imaging CPC-type reflector to take advantage of the stationary features (no tracking system, diffuse radiation collection, etc) while using a moderate concentration factor increasing its thermal efficiency. The collector design is the result of an optimization model aiming at producing energy at the lowest possible cost (€/kWh), during the expected collector lifetime in a specific installation. This paper presents the simulated and experimental performance results of two prototypes. The first, built to prove the concept, showed promising results. The second, already at a pre-commercially development stage, presented an efficiency of around 40% for an operating temperature of 180 °C (30 °C ambient temperature) and a stagnation temperature close to 400 °C. |
| Databáze: | OpenAIRE |
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