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A RESEARCH ON GREENHOUSE HEATING WITH SOLAR ENERGY USING VACUUM TUBULAR COLLECTORS AND NANOFLUID

Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 2
Written by Bulent AYHAN, Hasan Huseyin OZTURK, Hasan Kaan KUCUKERDEM

In this research, vacuum tube collectors with high efficiency in converting solar energy to heat energy will be used for heating greenhouse with nano-fluid as working fluid. Since the fluid exiting in such collectors is at a higher temperature (100-120°C.) than plane collectors, they have a wider use than plane collectors. The use of vacuum tube solar collectors increases the usability for storing heat for greenhouse heating in early spring and late autumn seasons. Solar energy and greenhouse heating system will be designed as open system. However, the system will be used as a nano-fluid heat storage and transport fluid (working fluid). The nanofluid water will be mixed with aluminum(Al2O3) nanoparticles. In the system, mixing ratios of water and aluminum oxide (Al2O3) and appropriate flow rate will be determined for the first time depending on the heat requirement of the research greenhouse. Heat sum, thermal efficiency of storage and greenhouse units energy and exergy analyzes will be determined. In addition, environmental sustainability of the system will be evaluated by exergetic life cycle analysis.

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