Modelling the viability of heat recovery from combined sewers
Abdel-Aal, Mohamad Smits, R. Mohamed, Mostafa H.A. De Gussem, K. Schellart, A. Tait, Simon J.
Abdel-Aal, Mohamad
Smits, R.
Mohamed, Mostafa H.A.
De Gussem, K.
Schellart, A.
Tait, Simon J.
Publication Date
2014-07-01
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2014-04-28
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Abstract
Modelling of wastewater temperatures along a sewer pipe using energy balance equations and assuming steady-state conditions was achieved. Modelling error was calculated, by comparing the predicted temperature drop to measured ones in three combined sewers, and was found to have an overall root mean squared error of 0.37 K. Downstream measured wastewater temperature was plotted against modelled values; their line gradients were found to be within the range of 0.9995-1.0012. The ultimate aim of the modelling is to assess the viability of recovering heat from sewer pipes. This is done by evaluating an appropriate location for a heat exchanger within a sewer network that can recover heat without impacting negatively on the downstream wastewater treatment plant (WWTP). Long sewers may prove to be more viable for heat recovery, as heat lost can be reclaimed before wastewater reaching the WWTP.
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Abdel-Aal M, Smits R, Mohamed M et al (2014) Modelling the viability of heat recovery from combined sewers. Water Science and Technology. 70 (2): 297-306.
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