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Experimental and theoretical investigation of an evacuated tube solar water heater incorporating wickless heat pipes

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
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.
Rocznik
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
  • [1] Akyurt M.: Development of heat pipes for solar water heaters. J. Solar Energ. 32(1984), 5, 625–631.
  • [2] Hammad M.: Experimental study of the performance of a solar collector cooled by heat pipes. Renew. Energ. 6(1995), 1, 11–15.
  • [3] Chun W., Kang Y., Lee, Y.: An experimental study of the utilization of heat pipes for solar water heaters. App. Therm. Eng. 19(1999), 807–817.
  • [4] Lima P., Palanyana S.: Flat plate solar collector with heat pipes and selective surfaces. Lat. Am. App. Res. 30(2000), 3, 249–251.
  • [5] Ismail K.A.R., Abogderah M.M.: Performance of a heat pipe solar collector. J. Solar Eng.- T ASME 120(1998), 1, 51–59.
  • [6] Walker A., Mahjouri F., Stiteler R.: Evacuated-tube heat pipe solar collectors applied to the recirculation loop in a federal building. NERL Rep., NERL/CP-710- 36149, In: Proc. Solar 2004 Conf., Portland, 7–14 July 2004 (preprint).
  • [7] Van der Aa H.H.M.: Solar collector comprising an absorber plate which exchanges heat with the evaporator section of a heat pipe. United States patent US PAT-APPL320248, 1980.
  • [8] Ng K., Yap C., Khor T.: Outdoor testing of evacuated-tube heat pipe solar collectors. P.I. Mech. Eng. E – J. Process Mech. Eng. 214(2000), 1, 23–30.
  • [9] Huang B.J., Tsuei J.T.: A method of analysis for heat pipe heat exchangers. Int. J. Heat Mass Tran. 28(1985), 3, 553–562.
  • [10] Praene J., Grade F., Lucas F.: Dynamic modeling and elements of validation of solar evacuated tube collectors. In: Proc. 9th Int. IBPSA Conf., Montreal, 2005.
  • [11] Joudi K.A., Al-Joboory H.N.S.: Experimental investigation of individual evacuated tube heat pipe solar water heating systems. J. Engineering 18(2012), 2, 203–222.
  • [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.
  • [17] Apricus AP Solar Collector Specifications. Techn. P., Apricus Solar Co., 2006.
  • [18] Farber E., Morrison C.: Clear-day design values of solar energy. In: Application of Solar Energy for Heating and Cooling of Buildings (R.C. Jordan, B.Y.H. Liu, Eds.). ASHRAE GRP 170, New York, 1977.
  • [19] Lienhard J.H., IV, Lienhard J.H., V: A Heat Transfer Textbook (3rd Edn.). Phlogiston, Cambridge 2008.
  • [20] Jiji Latif M.: Heat Convection. Springer-Verlag, 2006.
  • [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.
  • [22] Chiou R., Lu L., Chen J., North M.: Investigation of dry machining with embedded heat pipe cooling by finite element analysis and experiments. Int. J. Adv. Manuf. Technol., 31(2007), 9, 905–914.
  • [23] Kreith F., Boehm R. et al.: Heat and Mass Transfer. Mechanical Engineering Handbook, (F. Kreith, Ed.), CRC Press, Boca Raton 1999.
  • [24] Sodha M., Nayak J., Kaushik S., Sabberwal S., Malik M.: Performance of a collector/storage solar water heater. Energ. Convers. 19(1979), 1, 41–47.
  • [25] Noren W.: Heat pipe flat plate collector with temperature regulation. Rep. SERIWA 810/36/1, Sol. Energy Res. Inst. West Australia, 1981.
  • [26] Shitzer A., Kalmanoviz Y., Zvirin Y., Grossman G.: Experiments with a flat plate solar water heating system in thermosyphonic flow. Sol. Energy 22(1979), 1, 27–35.
  • [27] Hinotani K., Kanatani K., Osumi M.: An evacuated glass tube solar collector and its application to a solar cooling, heating and hot water supply system for the Kinki University. Sol. Energy 22(1979), 1, 535–545.
  • [28] Morrison G., Braun J.: System modeling and operation characteristics of thermosyphon solar water heaters. Sol. Energy 34(1985), 4-5, 389–405.
  • [29] Budihardjo I., Morrison G.: Performance of water-in-glass evacuated tubular solar water heaters. In: Proc. ANZSES Conf. 2005: Renewable Energy for a Sustainable Future – A challenge for a post carbon world (R. Prows; B. Lloyd, Eds.), Dunedid, 28–30 Nov. 2005 (available at www.unsw.edu.au).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-92fb5bab-57c8-4f58-bdf9-ad249b6c8c0d
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