{"id":134267,"date":"2025-04-16T15:51:19","date_gmt":"2025-04-16T13:51:19","guid":{"rendered":"https:\/\/www.velasolaris.com\/?post_type=funktionen&p=134267"},"modified":"2025-06-18T15:41:38","modified_gmt":"2025-06-18T13:41:38","slug":"waste-water-heat-recovery","status":"publish","type":"funktionen","link":"https:\/\/www.velasolaris.com\/en\/features\/waste-water-heat-recovery\/","title":{"rendered":"Waste Water Heat Recovery"},"content":{"rendered":"
Home<\/a><\/span> <\/i> Features<\/a><\/span> <\/i> Waste Water Heat Recovery<\/span><\/span><\/div>\n\n\n
\"Abwasserw\u00e4rmetauscher<\/figure>\n\n\n\n

Waste Water Heat Recovery<\/h1>\n\n\n\n

Heat exchangers are located in sewers for waste water heat recovery. This heat is typically recovered by heat pumps and can be used to heat buildings or provide domestic hot water. This technology helps to tap unused energy potential and increase the efficiency of heating systems. Simulation is essential to fully exploit the potential of this technology and to plan the sizing of components both locally and on a project-specific basis. It allows for precise adaptation of the systems to the respective conditions and optimizes their performance.<\/p>\n\n\n\n

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What are waste water heat exchangers?<\/h2>\n\n\n\n

Wastewater heat exchangers are installations in sewer systems that capture the heat contained in wastewater and transfer it to a heating system or hot water supply. This technology uses the temperature difference between the wastewater and the heat transfer medium to ensure efficient heat transfer. Wastewater is a product of households and commercial buildings from bathrooms, kitchens and other sanitary facilities. Wastewater is also produced in industry and can be used for heat generation due to its high temperature. This makes wastewater a virtually abundant source of energy.<\/p>\n\n\n\n

In a typical scenario, wastewater in the sewer is passed over a heat exchanger, which absorbs the heat from the wastewater and transfers it to the cold heat transfer medium that serves as the source for heat pumps. This process reduces the need for an external energy supply, as much of the required heat is recovered from the wastewater. In this way, wastewater heat exchangers can make a significant contribution to reducing energy consumption in buildings, while at the same time reducing environmental impact.<\/p>\n<\/div>\n\n\n\n

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\"W\u00e4rmetauscher<\/figure>\n<\/div>\n<\/div>\n\n\n\n

What are the applications for sewer heat recovery?<\/h2>\n\n\n\n

Wastewater heat exchangers are increasingly being used in a variety of applications, especially where other heat pump sources are not an option, such as in densely populated urban areas. As an energy source in district heating networks, they can be used to heat or cool residential, commercial and industrial buildings. If a heating network is planned, the different consumers can benefit from the synergy effects of heating and cooling with wastewater heat, especially in multi-use areas.<\/p>\n\n\n\n

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Residential Buildings: <\/h3> <\/div>\n
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In multi-family houses, the technology is often used to support the heating and hot water supply. Especially in regions with cold winters or in new buildings with high energy density, waste water heat exchangers are a cost-effective and efficient solution for reducing energy consumption.<\/p>\n<\/div>\n <\/div>\n\n <\/div>\n\t\t\t\t\t\t\t

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Commercial Buildings:<\/h3> <\/div>\n
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Hotels, gyms, hospitals and schools generate large quantities of waste water from showers and other sanitary facilities. Here, the waste heat from the waste water can be used to optimize the heating and hot water supply and thus reduce operating costs.<\/p>\n<\/div>\n <\/div>\n\n <\/div>\n\t\t\t\t\t\t\t

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Industrial Facilities:<\/h3> <\/div>\n
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Waste water heat exchangers can be used in industrial processes where water is frequently heated and then discharged. This is particularly important in areas such as the food or chemical industry, where large quantities of process water are heated.<\/p>\n<\/div>\n <\/div>\n\n <\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t <\/div>\n <\/div>\n\t\t\t\t\n\t\t\t\t <\/div>\n\t\t <\/div>\n <\/section>\n<\/div>\n<\/div>\n\n\n\n

How can a system with a waste water heat pump be precisely dimensioned?<\/h2>\n\n\n\n
\"W\u00e4rmer\u00fcckgewinnung<\/figure>\n\n\n\n
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When planning waste water heat exchangers and heat pumps for the supply of heat networks, large buildings or commercial properties, there are many variables to consider: Temperature differences, flow rates, heat transfer rates and other thermodynamic factors. A precise simulationtool provides the ability to model and analyze these variables in order to find the best solutions for the specific requirements of a project. The simulation of wastewater heat exchangers and heat pumps brings the following added value:<\/p>\n\n\n\n