Work

Measurement and thermal characterization of graywater discharge events for house-central collection systems in the context of heat recovery

Year: 2024

Type: article

Abstract: ABSTRACT Within this work, a detailed measurement with a temporal resolution of 3 s of flow rate and temperature of a house-central graywater system was carried out. Individual discharge events could be identified and assigned to specific types of use via user surveys and current measurements. Due to the consistent recording of measurement errors, the accuracy of the determined data could be improved. Error rates of approximately 0–30% were determined, depending on the tab. Thus, accurate statements on the existing temperature distribution for the graywater of specific tabs could be determined. Tab-specific temperature distributions were calculated with ranges of 16–50 °C and an overall mean value of approximately 28 °C. Furthermore, a novel data basis could be provided by evaluating the time-related rate of change of temperatures. This enables more precise simulations to be carried out. For some tabs, significant differences to previous assumptions became apparent. The high temporal resolution of the data also enables simulative considerations that go beyond previous longer-scale energy balances.

Source: Water Reuse

DOI: 10.2166/wrd.2024.054

Authors: Simon Mehling, Stefanie Hörnlein, Tobias Schnabel, Silvio Beier, Jörg Londong

Institutions: Hof University of Applied Sciences, University of Applied Sciences Erfurt, Bauhaus-Universität Weimar

Language: English

Topic: Wastewater Treatment and Reuse

Subfield: Waste Management and Disposal

Field: Environmental Science

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: diamond

Funder: Bundesministerium für Wirtschaft und Klimaschutz