Metallic Mesh as Capillary Structure Applied in Heat Pipe Heat Exchanger for Heat Recovery

Abstract:

This work presents a theoretical and experimental analysis of a heat exchanger assisted by five heat pipes made of copper with a metallic mesh 100 of stainless steel which was used as capillary structure. All heat pipes used water as the working fluid and were designed based on the capillary limit model. The heat pipes were developed and tested under heat loads varying from 20 to 50 W before application into the heat exchanger. The theoretical and experimental results were compared and all heat pipes worked satisfactorily. Thereafter, it is presented the development of heat pipe heat exchanger which was tested under heat loads varying from 100 to 250 W. The highest temperature measured on the external surface of the heat pipes was 90 oC and the heat exchanger thermal efficiency varied from 74 to 80%. It is showed that the use of a stainless steel mesh as a porous wick was proved to work successfully in heat pipes.

• Periodical: Advanced Materials Research (Volume 1082)
• Pages: 309-314
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1082.309
• Online since: December 2014
• Authors: Diogo L.F. Santos, Larissa S. Marquardt, Paulo H.D. Santos, Thiago Antonini Alves
• Keywords: Heat Pipe, Heat Pipe Heat Exchanger, Stainless Steel Mesh 100, Water

References

[1] J.A. Rossa, E. Bazzo, Thermodynamics modeling and second law for an ammonia-water absorption system associated to a microturbine, Proc. 19th Int. Conf. Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy and Process System, Crete, Greece, 2006, pp.651-658.

[2] J.A. Rossa, E. Bazzo, Thermodynamics modeling of an ammonia-water absorption system associated with a microturbine, International Journal of Thermodynamics 12 (2009) 38-43.

[3] A.N. Carvalho, Análise experimental e exergoeconômica de um sistema composto de cogeração a gás natural, Master Dissertation, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil, (2010).

DOI: 10.5196/physicae.v11i11.311

[4] S.V. Konev, J.L. Wang, C.J. Tu, Characteristics of a heat exchanger based on a collector heat pipe, Heat Recovery Systems and CHP 15 (1995) 493-502.

DOI: 10.1016/0890-4332(95)90058-6

[5] H.N. Chaudhry, B.R. Hughes, S.A. Ghani, A review of heat pipes systems for heat recovery and renewable energy applications, Renewable and Sustainable Energy Reviews 16 (2012) 2249-2259.

DOI: 10.1016/j.rser.2012.01.038

[6] W. Srimuang, P. Amatachaya, A review of heat pipe heat exchangers for heat recovery, Renewable and Sustainable Energy Reviews 16 (2012) 4303-4315.

DOI: 10.1016/j.rser.2012.03.030

[7] S. Lin, J. Broadbent, R. McGlen, Numerical study of heat pipe application in heat recovery systems, Applied Thermal Engineering 23 (2005) 367-372.

DOI: 10.1016/j.applthermaleng.2004.02.012

[8] F. Yang, X. Yuan, G. Lin, Waste heat recovery using heat pipe heat exchanger for heating automobile using exhaust gas, Applied Thermal Engineering 25 (2003) 367-372.

DOI: 10.1016/s1359-4311(02)00190-4

[9] G.P. Peterson, An Introduction to Heat Pipes: Modeling, Testing and Applications (Thermal Management of Microelectronic and Electronic System Series), Wiley-Interscience, (1994).

[10] P.H.D. Santos, L. Krambeck, D.L.F. Santos, T.A. Alves, Analysis of a stainless steel heat pipe based on operation limits, International Review of Mechanical Engineering 8 (2014) 599-608.

DOI: 10.15866/ireme.v8i3.902

[11] P.H.D. Santos, L. Krambeck, T.A. Alves, Experimental analysis of a stainless steel heat pipe, International Journal of Science and Advanced Technology 4 (2014) 17-22.