<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></abstract>

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.

Possibility of heat recovery from gray water in residential building

Faculty of Civil and Environmental Engineering and Architecture, Department of Infrastructure and Waste Management

Selected Scientific Papers - Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Possibility of heat recovery from gray water in residential building"}

Recovery of waste heat from gray water can be an interesting alternative to other energy saving systems in a building, including alternative energy sources....

Possibility of heat recovery from gray water in residential building

Published Online: Dec 29, 2017

Page range: 155 - 162

DOI: https://doi.org/10.1515/sspjce-2017-0032

Keywords
heat recovery, heat exchanger, hot water, DWHR, Life Cycle Cost, LCC

© 2017 Aleksandra Mazur et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Possibility of heat recovery from gray water in residential building

Published Online: Dec 29, 2017

Page range: 155 - 162

DOI: https://doi.org/10.1515/sspjce-2017-0032

Keywordsheat recovery, heat exchanger, hot water, DWHR, Life Cycle Cost, LCC

© 2017 Aleksandra Mazur et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
heat recovery, heat exchanger, hot water, DWHR, Life Cycle Cost, LCC