Articles | Volume 9, issue 1
Research article
27 Jan 2016
Research article |  | 27 Jan 2016

Shower heat exchanger: reuse of energy from heated drinking water for CO2 reduction

Z. Deng, S. Mol, and J. P. van der Hoek

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Cited articles

City of Amsterdam: Amsterdam: a Different Energy – 2040 Energy Strategy, Report City of Amsterdam, Klimaatbureau, Amsterdam, the Netherlands, 2009.
Dutch Solar Systems: DSS shower drain water heat recovery unit, Enschede, the Netherlands, available at:, last access: 3 March, 2015.
Hofman, J., Hofman-Caris, R., Nederlof, M., Frins, J., and Van Loosdrecht, M.: Water and energy as inseparable twins for sustainable solutions, Water Sci. Technol., 63, 88–92, 2011.
IPCC: Summary for policymakers, in: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Stocker, T. F., Qin, D., Plattner, G. K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P. M., Cambridge University Press, Cambridge, UK and New York, NY, USA, 4–29,, 2013.
Liu, L., Fu, L., and Jiang, Y.: Application of an exhaust heat recovery system for domestic hot water, Energy, 35, 1476–1481, 2010.
Short summary
During a shower, a shower heat exchanger from Dutch Solar System can recover more than half of the thermal energy from the heated drinking water. Under a positive condition, installing shower heat exchangers might lead to a reduction of 54 kton CO2 per year in Amsterdam. The research proves the efficiency and potential of the shower heat exchanger, by carrying out experiments in the laboratory and collecting data from the Uilenstede project site, a student housing estate near Amsterdam.