In this section, some of the commercial applications of WWSHP are presented. They are tabulated with the given technical data ofthe system while some of them are with figures.Binningen, and Wipkingen plants [14] were constructed inSwitzerland. Fig. 8 shows the channel profile, and position ofpipelines after installation at the Binningen plant. The channel viewand the HEX related to Wipkingen plant is given in Fig. 9, and sometechnical data on these two plants are presented in Table 4.The Binningen plant has provided the required heat supply tothe municipality of Binningen in Switzerland since 2001 to 68different buildings including schools and private and municipalbuilding. The waste heat recovered from sewer has been used asthe central heating and hot water supply with the help of a HPsystem [14].Since 1999, the plant Wibkingen in Zurich, Switzerland has sup-plied heat and hot water to 2 of 940 cooperative buildings and acompany building with seven bivalent HPs. The Wipkingen plantreplaced 600,000 l of oil usage per year for heating and hot watersupply with WWSHP system. The system caused 2◦C decrease inthe temperature of sewage, which was approved by WerdhölzliWWTP connected to the sewage system where the WWHEX of theWibkingen plant was installed [14].The WWHEX application at Cessiere plant [9] in Fig. 10 wasdeveloped in 2008. Channel view after installation at the Dresdenplant can be seen in Fig. 11 while Fig. 12 belongs to the Rauenbers