Preheating residential and commercial hot water supplies through heat exchange with grey water

Technical Report · Mon Feb 06 00:00:00 EST 1984

OSTI ID:6682820

Nelson, G

To study use of heat recovered from grey water to preheat the hot water supply, special heat exchangers were designed, constructed and tested. Four systems were installed in residences and public facilities for monitoring. Tests were performed on counter current exchangers to quantify the relationship of recovery effectiveness and shell diameter, since an important trade off must be made between exchanger effectiveness and grey water pressure drop and resistance to clogging. Results of the monitoring program showed that all exchangers contributed significant energy, 13%-21% of the total used for hot water. Even at this level of savings and cost of materials and installation, heat recovery proved economically advantageous.

• Research Organization: Nelson (Glenn), Whitefish, MT (USA)
• DOE Contract Number: FG48-81R803052
• OSTI ID: 6682820
• Report Number(s): DOE/R8/03052-T1; ON: DE84015785
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
HEAT EXCHANGERS
DESIGN
RESIDENTIAL BUILDINGS
HEAT RECOVERY
WASTE WATER
CONSTRUCTION
INSTALLATION
MONITORING
BUILDINGS
ENERGY RECOVERY
HYDROGEN COMPOUNDS
LIQUID WASTES
OXYGEN COMPOUNDS
RECOVERY
WASTES
WATER
320101* - Energy Conservation
Consumption
& Utilization- Residential Buildings- (-1987)