Design of Solar Thermal Combined Power and Cooling System Using LiBr-Water as Working Fluid

Abstract:

The integration of power and vapor absorption refrigeration cycle overcomes the disadvantages of power used for the compression refrigeration and also produces additional power for other purposes (Low pressure turbine). The integration is done by making the heat exchanger and generator as common and separate super heater and reheater is used to run the high pressure turbine (HPT) and low pressure turbine (LPT). The maximum total power output of 69.78 kW and 31.86 kW is obtained for HPT and LPT at the atmosphere temperature 30 °C and separator temperature 180 °C. At the same collector exit and atmosphere temperature shows the maximum cooling output of 188.88 kW. The additional advantages of integrating the power and cooling cycle’s shows the choice of choosing the need of only power only cooling and both power and cooling. The analyses are done for various separator temperature and strong solution concentration.

• Periodical: Applied Mechanics and Materials (Volume 852)
• Pages: 646-651
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.852.646
• Online since: September 2016
• Authors: R. Shankar*, T. Srinivas
• Keywords: Cogeneration, Cooling, Kalina Cycle, LiBr-Water, Power, Single Effect

References

[1] P. Srikhirin, S. Aphornratana, S. Chungpaibulpatana, A review of absorption refrigeration technologies. Renewable and sustainable energy reviews. 5 (2001) 343-72.

DOI: 10.1016/s1364-0321(01)00003-x

[2] F. Asdrubali, S. Grignaffini, Experimental evaluation of the performances of a H2O–LiBr absorption refrigerator under different service conditions, International Journal of Refrigeration. 28 (2005) 489–497.

DOI: 10.1016/j.ijrefrig.2004.11.006

[3] G.A. Florides, S.A. Kalogirou, S.A. Tassou, L.C. Wrobel, Design and construction of a LiBr–water absorption machine. Energy Conversion and Management. 44(2003), 2483-2508.

DOI: 10.1016/s0196-8904(03)00006-2

[4] J.A. Dirksen, T.A. Ring, K.N. Duvall, N. Jongen , Testing of crystallization inhibitors in industrial LiBr solutions. International journal of refrigeration. 24(2001), 856-859.

DOI: 10.1016/s0140-7007(01)00006-8

[5] H. Nezammahalleh, F. Farhadi, M. Tanhaemami, Conceptual design and techno-economic assessment of integrated solar combined cycle system with DSG technology, Solar Energy. 84 (2010) 1696–1705.

DOI: 10.1016/j.solener.2010.05.007

[6] S.A. Kalogirou, Solar thermal collectors and applications, Progress in Energy and Combustion Science. 30 (2004) 231–295.

DOI: 10.1016/j.pecs.2004.02.001

[7] R. Shankar, T. Srinivas, Solar thermal based power and vapor absorption refrigeration system, Procedia Engg. 38 (2012) 730 – 736.

DOI: 10.1016/j.proeng.2012.06.092

[8] Y. Kaita, Thermodynamic properties of lithium bromide –water solutions at high temperatures, International Journal of Refrigeration. 24(2001)374-390.

DOI: 10.1016/s0140-7007(00)00039-6

[9] Final report, Thermophysical property data for Lithium bromide/Water solutions at elevated temperature, ASHRAE. March (1991).

[10] R. Shankar, T. Srinivas, Modeling of extraction in vapor absorption refrigeration system, Procedia Engineering. 38 (2012) 98 – 104.

DOI: 10.1016/j.proeng.2012.06.014