Abstract

This calculation procedure deals with instantaneous DHW heat recovery using a counter-flow heat exchanger between the drain water and the incoming cold water. The proposed procedure calculates the recovered heat, to be taken into account in the overall building energy performance calculation scheme. This calculation procedure doesn't cover storage heat recovery or the use of drain water as a source for a heat pump.

Begin

2024-01-31

WI

00228110

Planned document number

DIN EN 15316-7-1

Project number

04112192

Responsible national committee

NA 041-05-01 AA - Design and energy performance of heating systems and water based cooling systems and DHW in buildings  

Responsible european committee

CEN/TC 228/WG 4 - Calculation methods and system performance and evaluation  

draft standard

Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 7-1: DHW instantaneous heat recovery - Module M8-13; German and English version prEN 15316-7-1:2025
2025-12
Order from DIN Media