1.3.5 Installation of a timer for the DHW recirculation pump
Description
It is recommended to install a timer that disconnects the recirculation pump during the hours in which there is no demand of DHW in the building.
Benefits
In addition to saving energy, the lifespan of the pump is extended
Limitations
There must be a hot water return circuit installed in the distribution network
Economic assessment
Initial investment: low. A timer integrated in the recirculating pump costs about 200€.
References and best practices
Energy efficient controls for multifamily domestic hot water: energy.gov/sites/prod/files/2015/01/f19/ba_webinar_dentz_ansanelli_1-21-15_0.pdf
Domestic hot water systems: www.aspe.org/sites/default/files/webfm/ContinuingEd/CEU_221_Mar15.pdf
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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
