Horizontal Shower Heat Exchanger as an Effective Domestic Hot Water Heating Alternative

Wastewater has significant potential as a source of clean energy. This energy can be used both within external sewer networks and on the scale individual residential buildings, use shower heat exchangers appears to most reasonable solution. However, in case Poland, problem is still unwillingness society this type solution, caused mainly by lack space for installation vertical drain water recovery (DWHR) units low efficiency horizontal units. In response issue, new compact exchanger designed mounted below tray, well its linear counterpart, was investigated under various operating conditions. addition, financial using DWHR unit with average consumption showering evaluated. For purpose, discount methods were estimate investments. The study showed that higher than counterpart. Depending temperature cold flow rate media through exchanger, it achieves efficiencies ranging from 22.43% 31.82%, while did not exceed 23.03% study. analysis particularly beneficial when building uses an electric hot heater. investment’s sensitivity changes independent variables small case, even per shower. only exceptions are investment outlays. Therefore, device, which many cases financially viable.