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Economic assessment of the benefits of wraparound heat pipes in ventilation processes for hot and humid climates

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  • Hussam Jouhara

Abstract

This paper examines the potential for energy and cost savings that may be realized through the incorporation of a wraparound heat pipe heat exchanger into the apparatus of a conventional means of dehumidification. This investigation concentrates on the use of dehumidification as practised in the ventilation of occupied spaces subjected to hot and humid outdoor climates. The concepts and conventional methods used to provide comfortable ventilation air are identified and discussed. The novel use of heat pipe technology is then introduced along with a qualitative discussion of the benefits. This investigation concludes with a quantitative analysis of the running costs of a conventional system when compared with those of the heat pipe enhanced system. Initial capital costs are also considered in an analysis of payback expectations. For the tested case and for a 3-m-super-3/s-treated air flow rate, it is found that an annual saving of nearly 134 MWh can be realized by utilizing the discussed heat pipe technology. In addition, this investigation demonstrates that the actual cost of the heat pipe technology used to replace the conventional ventilation methods is marginal when compared with the cost saving, resulting from the reduced material used. Copyright The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org, Oxford University Press.

Suggested Citation

  • Hussam Jouhara, 2009. "Economic assessment of the benefits of wraparound heat pipes in ventilation processes for hot and humid climates," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 4(1), pages 52-60, March.
    • Handle: RePEc:oup:ijlctc:v:4:y:2009:i:1:p:52-60
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctp006
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    1. Jouhara, H. & Szulgowska-Zgrzywa, M. & Sayegh, M.A. & Milko, J. & Danielewicz, J. & Nannou, T.K. & Lester, S.P., 2017. "The performance of a heat pipe based solar PV/T roof collector and its potential contribution in district heating applications," Energy, Elsevier, vol. 136(C), pages 117-125.
    2. Jouhara, Hussam & Ajji, Zaki & Koudsi, Yahia & Ezzuddin, Hatem & Mousa, Nisreen, 2013. "Experimental investigation of an inclined-condenser wickless heat pipe charged with water and an ethanol–water azeotropic mixture," Energy, Elsevier, vol. 61(C), pages 139-147.
    3. Chan, C.W. & Siqueiros, E. & Ling-Chin, J. & Royapoor, M. & Roskilly, A.P., 2015. "Heat utilisation technologies: A critical review of heat pipes," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 615-627.
    4. Danielewicz, J. & Sayegh, M.A. & Śniechowska, B. & Szulgowska-Zgrzywa, M. & Jouhara, H., 2014. "Experimental and analytical performance investigation of air to air two phase closed thermosyphon based heat exchangers," Energy, Elsevier, vol. 77(C), pages 82-87.
    5. Sarafraz, M.M. & Pourmehran, O. & Yang, B. & Arjomandi, M., 2019. "Assessment of the thermal performance of a thermosyphon heat pipe using zirconia-acetone nanofluids," Renewable Energy, Elsevier, vol. 136(C), pages 884-895.
    6. Jouhara, Hussam & Merchant, Hasnain, 2012. "Experimental investigation of a thermosyphon based heat exchanger used in energy efficient air handling units," Energy, Elsevier, vol. 39(1), pages 82-89.
    7. Amini, Amir & Miller, Jeremy & Jouhara, Hussam, 2017. "An investigation into the use of the heat pipe technology in thermal energy storage heat exchangers," Energy, Elsevier, vol. 136(C), pages 163-172.
    8. Jouhara, Hussam & Meskimmon, Richard, 2014. "Heat pipe based thermal management systems for energy-efficient data centres," Energy, Elsevier, vol. 77(C), pages 265-270.
    9. K. S. Ong, 2016. "Review of heat pipe heat exchangers for enhanced dehumidification and cooling in air conditioning systems," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 11(3), pages 416-423.
    10. Jouhara, Hussam & Meskimmon, Richard, 2010. "Experimental investigation of wraparound loop heat pipe heat exchanger used in energy efficient air handling units," Energy, Elsevier, vol. 35(12), pages 4592-4599.
    11. Jouhara, Hussam & Ezzuddin, Hatem, 2013. "Thermal performance characteristics of a wraparound loop heat pipe (WLHP) charged with R134A," Energy, Elsevier, vol. 61(C), pages 128-138.
    12. Zhuang, Chaoqun & Wang, Shengwei, 2020. "Risk-based online robust optimal control of air-conditioning systems for buildings requiring strict humidity control considering measurement uncertainties," Applied Energy, Elsevier, vol. 261(C).
    13. Jouhara, Hussam & Almahmoud, Sulaiman & Brough, Daniel & Guichet, Valentin & Delpech, Bertrand & Chauhan, Amisha & Ahmad, Lujean & Serey, Nicolas, 2021. "Experimental and theoretical investigation of the performance of an air to water multi-pass heat pipe-based heat exchanger," Energy, Elsevier, vol. 219(C).

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