Possibility of heat recovery from gray water in residential building

Open access


Recovery of waste heat from gray water can be an interesting alternative to other energy saving systems in a building, including alternative energy sources. Mainly, due to a number of advantages including independence from weather conditions, small investment outlay, lack of user support, or a slight interference with the installation system. The purpose of this article is to present the financial effectiveness of installations which provide hot, usable water to a detached house, using a Drain Water Heat Recovery (DWHR) system depending on the number of system users and the various combinations of bathing time in the shower, which has an influence on the daily warm water demand in each of the considered options. The economic analysis of the adopted installation variants is based on the Life Cycle Cost (LCC) method, which is characterized by the fact that it also includes the operating costs in addition to the capital expenditure during the entire analysis period. For each case, the necessary devices were selected and the cost of their installation was estimated.

[1] Szul, T. Technical and economic evaluation of the heating systems using electric energy. Agricultural, Horticultural and Forest Engineering, no. 1, 2016, p.12-15.

[2] Sun, X., Dai, Y., Novakovic, V., Wu, J., Wang, R. Performance comparison of the direct expansion solar-assisted heat pump and conventional air source heat pump for domestic hot water. Energy Procedia, vol 70, 2015, p.394-401.

[3] Self, S.J., Reddy, B.V., Rosen, M.A. Geothermal heat pump systems: Status review and comparison with other heating options. Applied Energy, vol. 101, 2013, p. 341-348.

[4] Stec, A., Kordana, S., Słyś, D. Analysis the financial efficiency of use of water and energy saving systems in single-family homes. Journal of Cleaner Production, vol. 151, 2017, p.193-205.

[5] McNabola, A., Shields, K. Efficient drain water heat recovery in horizontal domestic shower drains. Energy and Buildings, vol. 59, 2013, p.44-49.

[6] Czarniecki, D., Pisarev, V., Dziopak, J., Słyś, D. Technical and economic analysis of the application of the wastewater heat recovery system in an apartment building. Interdisciplinary Problems in Environmental Protection and Engineering, vol. 4, Wrocław 2014.

[7] Stec, A., Kordana, S. Analysis of profitability of rainwater harvesting, gray water recycling and drain water heat recovery systems. Resources, Conservation and Recycling, vol. 105, Part A, 2015, p.84-94.

[8] Słyś, D., Kordana, S. Odzysk ciepła odpadowego w instalacjach i systemach kanalizacyjnych. Wydawnictwo i Handel Książkami „KaBe” (Waste heat recovery in sewage installations and systems. „KaBe” Publishing House and Book Trade), Krosno, 2013.

[9] Stec, A., Słyś, D. Instalacje ekologiczne w budownictwie mieszkaniowym. Wydawnictwo i Handel Książkami „KaBe” (Ecological installations in residential buildings. „KaBe” Publishing House and Book Trade), Krosno 2016.

[11] Journal of Laws of 2015, item 376, Rozporządzenie Ministra Infrastruktury i Rozwoju z dnia 27 lutego 2015 r. w sprawie metodologii wyznaczania charakterystyki energetycznej budynku lub części budynku oraz świadectw charakterystyki energetycznej (Regulation of the Minister of Infrastructure and Development of 18 February 2015 on the methodology for determining the energy performance of a building or part of a building and energy performance certificates).

[12] Fidewicz, S. Wykorzystanie ciepła odpadowego jako działanie proefektywnościowe w dziedzinie gospodarki energetycznej (Exploitation of waste heat as pro-effectiveness actions in in the field of energy management). Biblioteka Źródłowa Energetyki Prosumenckiej, 2015 Available:http://ilabepro.polsl.pl/spep/raporty/energetyka-odpadowa/Fidewicz%20Sz.%20Ciep%C5%82o%20odpadowe%20w%20domu..pdf (accessed June 2017).

[13] Dziaduch, I. Life cycle costing models: literature review. Logistics, vol. 2, 2010, The Institute of Logistics and Warehousing.

[14] Life Cycle Cost Handbook. Guidance for Life Cycle Cost Estimation and Analysis. Office of Acquisition and Project Management, U.S. Department of Energy, Washington. Available: http://www.energy.gov/sites/prod/files/2014/10/f18/LCC%20Handbook%20Final%20Version%209-30-14.pdf (accessed June 2017).

[15] De Dietrich, De Dietrich Brochures http://dedietrich.pl (accessed June 2017).

[16] Q-Blue, Q-Blue brochures http://www.q-blue.nl (accessed June 2017).

Selected Scientific Papers - Journal of Civil Engineering

The Journal of Technical University of Kosice

Journal Information


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 56 56 23
PDF Downloads 16 16 7