An assessment of the potential for shower water heat recovery

Sabina Kordana,D Słyś,J Dziopk

doi:10.1051/e3sconf/20184500034

Sabina Kordana, D Słyś + Show 1 more

Open Access

https://doi.org/10.1051/e3sconf/20184500034

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Journal: E3S Web of Conferences	Publication Date: Jan 1, 2018
Citations: 5	License type: CC BY 4.0

Affiliation: Rzeszów University of Technology

Abstract

The recovery of heat from greywater is one of the methods for reducing the energy demand on buildings. The process may be accomplished, e.g. using a Drain Water Heat Recovery (DHWR) unit installed at the shower drain. The paper analyzes the rationale for a DWHR unit being installed within a joint drain system of two separate shower installations. To this end, Net Present Values (NPV) and Profitability Indexes (PI) were calculated for the different parameters of a building shower operation. The study showed that the profitability of such investment depends not only on the installation's operation parameters but also on the type of energy carrier.

Highlights

Numerous technologies and practices in use today may bring harm to humans and the environment [1, 2]
The validity of implementing any of these solutions depends on a number of parameters including, among others, the installation size and operation regimen. In response to this issue, this paper presents the results of an analysis comparing the profitability of Drain Water Heat Recovery (DWHR) units being used in shower installations with different use profiles
For the sake of comparison, lines corresponding to Net Present Values (NPV) values obtained in the case of two separate DWHR units being used were plotted on the graph

Summary

Introduction

Numerous technologies and practices in use today may bring harm to humans and the environment [1, 2]. Some of the most important changes consist of reducing the consumption of water and energy in individual facilities [10, 11] as well as in the minimized adverse environmental impact of various solutions [12, 13]. Such an approach may undoubtedly be referred to as sustainable and efforts should be made to maintain this sustainability in longer time frames. The validity of implementing any of these solutions depends on a number of parameters including, among others, the installation size and operation regimen In response to this issue, this paper presents the results of an analysis comparing the profitability of DWHR units being used in shower installations with different use profiles

Theory and calculation

Results and discussion

Conclusions