Thermodynamic Analysis of Solar Heat Exchanger Assisted Ammonia-Water VARS System
Keywords:Solar heat exchanger, vapor absorption, Dittus Boelter equation
This research focused on the importance of the Ammonia Water Vapour Absorption Refrigeration (VARS) system using solar heat exchangers. The thermal energy needed to operate the VARS through electrical energy can be saved by means of a solar heat exchanger during the daytime. In this case, the strong solution of NH3-H2O passed through a copper/aluminium pipe of the solar flat-plate collector. The top ceiling flat-plate collector is covered with transparent glass through which the solar radiation heats the pipe and the strong solution of NH3-H2O within it passes. Due to heating the NH3 vaporizes and separates out from the strong solution in the flash chamber. Then the vapour NH3 flows into the condenser due to the buoyancy effect.
It is interesting to discern the significance of solar-assisted heat exchangers to operate VARS and save electrical energy during the daytime. However, the daytime temperate variation is due to solar radiation in the heat supplied to any solar heat exchanger. The performance of the heat exchanger is governed by the mass flow rate binary solution. The effectiveness significantly affects the COP of VARS. Moreover, the VARS operating cost is reduced.
Arunkumar, S., &Ragavendran, R. (2016). Design and fabrication of solar powered lithium bromide vapour absorption refrigeration system. IOSR J MechCivEng IOSR-JMCE, 13, 57-62.
Augustine, C., &Nnabuchi, M. N. (2010). Analysis of some meteorological data for some selected Cities in the Eastern and Southern zone of Nigeria. African Journal of Environmental Science and Technology, 4(2), 92-99.
Gunther, R.C. (1957). “Refrigeration, Air Conditioning and Cold Storage”, (2nd edition). ChiltonCompany, Philadelphia,
Farber, E. A. (1965). Direct use of solar energy to operate refrigeration and air conditioning systems. Fla., Univ., Eng. Ind. Exp. Stn., Bull. Ser.; (United States), 14(11).
Swartman, R. K., Ha, V., & Swaminathan, C. (1975). Comparison of ammonia-water and ammonia-sodium thiocyanate as the refrigerant-absorbent in a solar refrigeration system. Solar energy, 17(2), 123-127.
Mattarolo, L. (1982). Solar powered air conditioning systems: a general survey. International Journal of Refrigeration, 5(6), 371-379.
Staicovici, M. D. (2000). A non-equilibrium phenomenological theory of the mass and heat transfer in physical and chemical interactions: Part II—modeling of the NH3/H2O bubble absorption, analytical study of absorption and experiments. International journal of heat and mass transfer, 43(22), 4175-4188.
Iyoki, S., &Uemura, T. (1990). Performance characteristics of the water-lithium bromide-zinc chloride-calcium bromide absorption refrigerating machine, absorption heat pump and absorption heat transformer. International journal of refrigeration, 13(3), 191-196.
Kouremenos, D. A., Antonopoulos, K. A., &Rogdakis, E. (1990). Hour-by-hour simulation of solar H2O-LiBr absorption heat transformers in Athens. Solar & wind technology, 7(2-3), 111-118.
Hammad, M. A., & Audi, M. S. (1992). Performance of a solar LiBr-water absorption refrigeration system. Renewable Energy, 2(3), 275-282.
Collier, R. K. (1979). The analysis and simulation of an open cycle absorption refrigeration system. Solar energy, 23(4), 357-366
Iloeje, O. C. (1986). Parametric effects on the performance of a solar powered solid absorption refrigerator. In Intersol Eighty Five (pp. 736-743). Pergamon.
Worsøe-Schmidt, P. (1983). Solar refrigeration for developing countries using a solid-absorption cycle. International Journal of Ambient Energy, 4(3), 115-124.
Li, M., Wang, R. Z., Xu, Y. X., Wu, J. Y., & Dieng, A. O. (2002). Experimental study on dynamic performance analysis of flat-plate solar solid-absorption, refrigeration for ice maker. Renewable energy, 27(2), 211-221.
Liao, X., &Radermacher, R. (2007). Absorption chiller crystallization control strategies for integrated cooling heating and power systems. International journal of Refrigeration, 30(5), 904-911.
Khattab, N. M. (2004). A novel solar-powered absorption, refrigeration module. Applied thermal engineering, 24(17-18), 2747-2760.
Chien, Z. J., Cho, H. P., Jwo, C. S., Chien, C. C., Chen, S. L., & Chen, Y. L. (2013). Experimental investigation on an absorption refrigerator driven by solar cells. International Journal of Photoenergy, 2013.
Bilgili, M. (2011). Hourly simulation and performance of solar electric-vapor compression refrigeration system. Solar Energy, 85(11), 2720-2731.
Colonna, P., &Gabrielli, S. (2003). Industrial trigeneration using ammonia–water absorption refrigeration systems (AAR). Applied Thermal Engineering, 23(4), 381-396.
Suryaningsih, S., &Nurhilal, O. (2016, February). Optimal design of an atmospheric water generator (AWG) based on thermo-electric cooler (TEC) for drought in rural area. In AIP conference proceedings (Vol. 1712, No. 1, p. 030009). AIP Publishing LLC.
Al Nimr, M.D. A., Al Ammari, W. A., &Alkhalidi, A. (2019). A novel hybrid photovoltaics/thermoelectric cooler distillation system. International Journal of Energy Research, 43(2), 791-805.
Rawat, M. K., Sen, P., Chattopadhyay, H., &Neogi, S. (2013). Developmental and experimental study of solar powered thermoelectric refrigeration system. International Journal of Engineering Research and Applications, 3(4), 2248-9622.
Dash, S. C., & Singh, N. (2019). Influence of axial magnetic field on swirling flow and vortex breakdown zones in a cylindrical cavity with a rotating lid. International Journal of Applied Mechanics, 11(06), 1950054.
Dash, S. C. (2021). MHD braking and Joules heating effect in a rotating confined cylindrical cavity packed with liquid metal. FME Transactions, 49(2), 437-444.
Dash, S. C., & Singh, N. (2019). Effect of a strong axial magnetic field on swirling flow in a cylindrical cavity with a top rotating lid. International Journal of Modern Physics C, 30(11), 1950092.
Chandra Dash, S. (2021). CFD analysis of Joule heating effect in a confined axi-symmetric swilling flow under the influence of axial magnetic field. International Journal of Computational Materials Science and Engineering, 10(03), 2150010.
Dash, S.C. (2017). Study of axi-symmetric nature in 3-d swirling flow in a cylindrical annulus with a top rotating lid under the influence of axial temperature gradient or axial magnetic field. Journal of Thermal Engineering, 3(6), 1588-1606.
Zaman, H., Shah, M. A., Khan, F., &Javed, Q. (2014). Effects of Hall current on MHD boundary layer second-order viscoelastic fluid flow induced by a continuous surface with heat transfer. American Journal of Computational Mathematics, 2014.
Yu, B., Liu, M., Egolf, P. W., &Kitanovski, A. (2010). A review of magnetic refrigerator and heat pump prototypes built before the year 2010. International Journal of refrigeration, 33(6), 1029-1060.
Sami, S. M., & Kita, R. J. (2005). Behaviour of new refrigerant mixtures under magnetic field. International journal of energy research, 29(13), 1205-1213.
How to Cite
Copyright (c) 2023 Aayush Singh, Gaurang Tiwaris, Subas Ch. Dash
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain the copyright of their manuscripts, and all Open Access articles are disseminated under the terms of the Creative Commons Attribution License 4.0 (CC-BY), which licenses unrestricted use, distribution, and reproduction in any medium, provided that the original work is appropriately cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations.