Prediction in off-design operation for the helical heat recovery exchanger

Nguyen Minh Phu * , Hoang Trong Tran Huy , Le The Truyen and Trinh Tien Tho

* Corresponding author (nmphu@nomail.com)

Article Sidebar

Full Text: PDF

Received: 25 Jan 2016
Revised: 20 May 2016
Accepted: 08 Jul 2016
Published: 30 Jul 2016
DOI: 10.22144/ctu.jsi.2016.007
Views
110
Downloads
37
Crossref
Scopus
Google Scholar
Europe PMC
How to Cite
Nguyen, M. P., Hoang, T. T. H., Le, T. T., & Trinh, T. T. (2016). Prediction in off-design operation for the helical heat recovery exchanger. CTU Journal of Innovation and Sustainable Development , (Renewable Energy), 46-51. https://doi.org/10.22144/ctu.jsi.2016.007
Issue
No. Special Issue on Renewable Energy (2016)

Main Article Content

Abstract

Helical heat exchangers are commonly used to exchange the thermal energy in waste heat recovery systems. Ammonia rectifier in absorption chiller and heat recovery steam generator are examples typically found in open literature. They are widely employed because of its compactness, high heat exchange rate, compensation of thermal expansion, vibration resistance, simple construction, and low capital cost. Heat exchanger researches have almost focused on straight tubes. However, study on helical heat exchanger has not been paid attention. In this study, a simplified model is developed to predict single phase heat transfer and pressure loss in the helical heat exchanger under various operating conditions without geometrical information inside the exchanger required. Methods of LMTD and e-NTU, and selective empirical correlations are presented in the model. Simulation results were achieved good agreement with the experimental data with a moderate tolerance. The model would be expected as a good tool for designers to the pre-design and correct selection of helical heat exchanger in thermal network.
Keywords: Helical heat exchanger, Modelling, Experimental validation

Article Details

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

References

Cengel, Y.A., 2003. Heat transfer - A practical approach. McGraw-Hill, 873 pages.

Fernández-Seara, J., Sieres, J., Vázquez, M., 2003. Heat and mass transfer analysis of a helical coil rectifier in an ammonia–water absorption system. International Journal of Thermal Sciences. 42: 783-794.

Hardik, B.K., Baburajan, P.K., Prabhu, S.V., 2015. Local heat transfer coefficient in helical coils with single phase flow. International Journal of Heat and Mass Transfer. 89: 522-538.

Kakaç, S., Liu, H., 2002. Heat Exchangers - Selection, Rating, andThermal Design. Second Ed. CRC Press, 522 pages.

Kayansayan, N., 1989. Thermal behavior of heat exchangers in off-design conditions. Heat Recovery Systems and CHP. 9: 265-273.

Klein, S.A., 2013. Engineering Equation Solver, F-Chart Software.

Prabhanjan, D.G., Raghavan, G.S.V., Rennie, T.J., 2002. Comparison of heat transfer rates between a straight tube heat exchanger and a helically coiled heat exchanger. International Communications in Heat and Mass Transfer. 29: 185-191.

Rogers, G.F.C., Mayhew, Y.R., 1964. Heat transfer and pressure loss in helically coiled tubes with turbulent flow. International Journal of Heat and Mass Transfer. 7: 1207-1216.

Rovira, A., Sánchez, C., Muñoz, M., Valdés, M., Durán, M.D., 2011. Thermoeconomic optimisation of heat recovery steam generators of combined cycle gas turbine power plants considering off-design operation. Energy Conversion and Management. 52: 1840-1849.

San, J.Y., Hsu, C.H., Chen, S.H., 2012. Heat transfer characteristics of a helical heat exchanger. Applied Thermal Engineering. 39: 114-120.

Smith, E.M., 2005. Advances in Thermal Design of Heat Exchangers. John Wiley & Sons, 530 pages.

Sogni, A., Chiesa, P., 2014. Calculation Code for Helically Coiled Heat Recovery Boilers. Energy Procedia. 45: 492-501.

Stoecker, W.F., Jones, J.W., 1982. Refrigeration & Air conditioning. Second Ed. McGraw-Hill, 440 pages.

Vera-García, F., García-Cascales, J.R., Gonzálvez-Maciá, J., Cabello, R., Llopis, R., Sanchez, D., Torrella, E., 2010. A simplified model for shell-and-tubes heat exchangers: Practical application. Applied Thermal Engineering. 30: 1231-1241.

Vitillo, F., Cachon, L., Reulet, P., Laroche, E., Millan, P., 2015. An innovative plate heat exchanger of enhanced compactness. Applied Thermal Engineering. 87: 826-838.

Wongwises, S., Polsongkram, M., 2006. Evaporation heat transfer and pressure drop of HFC-134a in a helically coiled concentric tube-in-tube heat exchanger. International Journal of Heat and Mass Transfer. 49: 658-670.

Xiaowen, Y., Lee, W.L., 2009. The use of helical heat exchanger for heat recovery domestic water-cooled air-conditioners. Energy Conversion and Management. 50: 240-246.

Yujie, Y., Yanzhong, L., Biao, S., Jieyu, Z., 2015. Performance Evaluation of Heat Transfer Enhancement in Plate-fin Heat Exchangers with Offset Strip Fins. Physics Procedia. 67: 543-550.

Zareh, M., Shokouhmand, H., Salimpour, M. R., Taeibi, M., 2014. Numerical simulation and experimental analysis of refrigerants flow through adiabatic helical capillary tube. International Journal of Refrigeration. 38: 299-309.