Heat pump system using wastewater heat

Details Heat pump system using wastewater heat Heat pump system using wastewater heat

1981-12-09

1984-05-15

Cline, William R.

Heating systems

Automatic control

Heat source is a reverse cycle refrigerating system or heat...

622387, 165DIG12, G05D 2300

Patent

active

044483473

ABSTRACT:
A practical and economical heat pump system stacks the evaporator, compressor, condenser, and expander to use heat from household wastewater more efficiently and effectively. A novel wastewater storage tank treats the wastewater to remove particulates while it supplies its warmest water to the evaporator to provide heat to the refrigerant in the heat pump unit. Heated water exiting the condenser is stored in a separate tank, such as an ordinary hot water heater. The system automatically ensures that the wastewater does not freeze in a substantial amount in the evaporator.

REFERENCES:
patent: 2696085 (1954-12-01), Ruff
patent: 4091994 (1978-05-01), Madsen
patent: 4141754 (1979-02-01), Frauenfeld
patent: 4150787 (1979-04-01), Braathen
patent: 4206805 (1980-06-01), Beckett
patent: 4207752 (1980-06-01), Schwarz
patent: 4255936 (1981-03-01), Cochran
patent: 4290275 (1981-09-01), Disco et al.
patent: 4305260 (1981-12-01), Backlund
patent: 4320630 (1982-03-01), Uselton et al.
patent: 4363221 (1982-12-01), Singh

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