Regional Feasibility Study on District Sewage Heat Supply With Gis

Development Of A Guideline For Integrating Municipal Infrastructure Asset Management With Wastewater Energy Recovery Systems

“…Centralized systems mean that a central collection point is recovering heat from multiple users. The benefit of collecting large amounts of heat from a widely distributed source is that it can serve a large geographic area with heat energy (Ichinose & Kawahara, 2017). Sewerage networks in urban municipalities are large and contain relatively low heat content, however this heat can still be recovered and distributed, if heat demand and heat recovery and use of recovered heat were aligned (Ichinose & Kawahara, 2017).…”

“…The benefit of collecting large amounts of heat from a widely distributed source is that it can serve a large geographic area with heat energy (Ichinose & Kawahara, 2017). Sewerage networks in urban municipalities are large and contain relatively low heat content, however this heat can still be recovered and distributed, if heat demand and heat recovery and use of recovered heat were aligned (Ichinose & Kawahara, 2017). However, as Sitzenfrei et al (2017) noted, a centralized system requires access to publicly owned sewer systems, managed by a government body like a municipality.…”

“…In centralized systems, Ichinose and Kawahara (2017) determined that feasible locations for WWERS are where both the heat content of the sewage and the heat demand is high. This is because the recovered heat must be captured and used within a practical distance for use (Ichinose & Kawahara, 2017). Additionally, installing heat pumps in existing locations requires long lengths of sewage pipes, as longer pipes allow for more heat pumps (Ichinose & Kawahara, 2017).…”

“…This is because the recovered heat must be captured and used within a practical distance for use (Ichinose & Kawahara, 2017). Additionally, installing heat pumps in existing locations requires long lengths of sewage pipes, as longer pipes allow for more heat pumps (Ichinose & Kawahara, 2017). Pipe length then becomes an additional constraint when determining favourable heat pump locations (Ichinose & Kawahara, 2017).…”

“…Additionally, installing heat pumps in existing locations requires long lengths of sewage pipes, as longer pipes allow for more heat pumps (Ichinose & Kawahara, 2017). Pipe length then becomes an additional constraint when determining favourable heat pump locations (Ichinose & Kawahara, 2017). Evaluating this relationship between raw sewage heat content and heat demand lead the authors to find existing areas that have large amounts of recoverable heat, that also had long sewer lines (Ichinose & Kawahara, 2017).…”