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Abstrakty
The present work involved an extensive outdoor performance testing program of a solar water heating system that consists of four evacuated tube solar collectors incorporating four wickless heat pipes integrated to a storage tank. Tests were conducted under the weather conditions of Baghdad, Iraq. The heat pipes were of 22 mm diameter, 1800 mm evaporator length and 200 mm condenser length. Three heat pipe working fluids were employed, ethanol, methanol, and acetone at an inventory of 50% by volume of the heat pipe evaporator sections. The system was tested outdoors with various load conditions. Results showed that the system performance was not sensitive to the type of heat pipe working fluid employed here. Improved overall efficiency of the solar system was obtained with hot water withdrawal (load conditions) by 14%. A theoretical analysis was formulated for the solar system performance using an energy balance based iterative electrical analogy formulation to compare the experimental temperature behavior and energy output with theoretical predictions. Good agreement of 8% was obtained between theoretical and experimental values.
Czasopismo
Rocznik
Tom
Strony
3--31
Opis fizyczny
Bibliogr. 29 poz., rys., tab., wykr., wz.
Twórcy
- Directorate of Renewable Energy, Ministry of Science and Technology, Baghdad, Iraq
Bibliografia
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- [12] Khalipe V., Deshmukh P.: Experimental study of evacuated tube two phase closed thermosyphon (TPCT) solar collector with nanofluid. J. Mech. Civil Eng. (IOSRJMCE) 3(2015), 21, 156–161.
- [13] Jamil M.M., Che Sidik N.A., Yazid Muchammad M.N.A.W.: Thermal performance of thermosyphon evacuated tube solar collector using TiO2/water nanofluid. J. Adv. Res. Fluid Mech. Thermal Sci. 20(2016), 1, 12–29.
- [14] Wisut Chamsa-ard, Sukruedee Sukchai, Sorawit Sonsaree: Thermal performance testing of heat pipe evacuated tube with compound parabolic concentrating solar collector by ISO 9806-1. Energy Proced. 56(2014), 237–246.
- [15] Mujawar N.H., Shaikh S.M.: Thermal performance investigation of evacuated tube heat pipe solar collector with nanofluid. Int. J. Eng. Sci. Res. Technol. 5(2016), 12, 924–837.
- [16] Sandar Hlaing, Myat Myat Soe: Design calculation and heat transfer analysis of heat pipe evacuated tube solar collector for water heating. Int. J. Eng. Sci. Res. Technol. 3(2014), 12, 2606–2611.
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- [21] Hussein H., Muhammad M., El-Asfouri A.: Theoretical analysis of laminarfilm condensation heat transfer inside inclined wickless heat pipes flat-plate solar collector. Renew. Energ. 23(2001), 525–535.
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-92fb5bab-57c8-4f58-bdf9-ad249b6c8c0d