/, DHW, DHW (measure), Long term, Owners, Physical environmental, Psychological, Residential/2.3.6 Installation of Drain Water Heat Recovery (DWHR) systems

2.3.6 Installation of Drain Water Heat Recovery (DWHR) systems

2.3.6 Installation of Drain Water Heat Recovery (DWHR) systems

Description

Drain water heat recovery units consist of coiled tubes wrapped around drain pipes that capture heat from waste water as it leaves the building. They then return the heat to the hot water system, reducing the energy required to provide hot water in the building.

Benefits

  • Store recovered heat for later use

  • Increase water heating capacity

  • Undersized water heater

  • Lower the water heating temperature without affecting the capacity

Limitations

  • Qualified plumbing and heating contractor to install the system

Economic assessment

Initial investment: range from 300€ to 500€. Installation will usually be less expensive in new home construction.

Paybacks range from 2.5 to 7 years, depending on how often the system is used.

References and best practices

Image gallery

CHARACTERIZATION

Environment or playable world:

  • Residential

  • Academic

  • Offices

  • All

Carried out by:

  • Public building users

  • Owners

  • Operators

  • All

Reduce consumption of:

  • Heating

  • Cooling

  • DHW

  • Lighting

  • Electric devices


Type of driver:

  • Physical environmental

  • Contextual

  • Psychological

  • Physiological

  • Social

Time framework:

  • Short term
  • Long term

Type of measure:

  • Envelope
  • HVAC
  • DHW
  • Lighting
  • Electrical devices
  • Other
Print to PDF
Print this page
2018-01-24T08:36:35+00:00