Heating systems – Automatic control – Water
Patent
1985-07-08
1986-04-29
Bennett, Henry
Heating systems
Automatic control
Water
236 46F, 236 91F, F24D 300
Patent
active
045851654
ABSTRACT:
The invention relates to a hot water heating system which includes individually operated radiators arranged in parallel. A heat exchanger and a pump supply hot water to the radiators. Control apparatus is included for reducing the on and off switching frequences. The control apparatus includes an integrator which outputs a value which is proportional to the difference between a reference temperature and the temperature at the output of the heat exchanger. The integrator value is fed to a hysteresis switch which switches the heat exchanger on and off when the integrator value reaches the opposite limits of the hysteresis switch.
REFERENCES:
patent: 4542849 (1985-09-01), Pichot et al.
Bennett Henry
Danfoss A/S
Easton Wayne B.
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