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US 4,537,348 AGranted
System for efficient service water heating
OwnerHans Gossiinventor
Life of this patent
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Abstract
A water heating system comprises a low temperature stage with a stratified tank, connected by a line system to a high temperature stage and a distribution stage. Between the high temperature stage and the distribution stage there can be an oppositely flowing line system. Lines carry circulating or mixed water from the distribution stage to a consumption stage. A programmable switching unit is provided for monitoring and controlling the hydraulic network.
Claims22
A method for providing heated service water, comprising the steps of:
- heating a quantity of service water to a lower temperature range in a lower temperature stage;
- heating a quantity of service water to a higher temperature range in a higher temperature stage;
- conveying service water between the lower and higher temperature stages through a first line means;
- conveying service water directly and separately from each of the higher and lower temperature stages to a distribution stage through second line means;
- mixing and circulating service water in the distribution stage;
- conveying service water, from the distribution stage to a consumption stage draw-off point through a third line means, of one of the temperature ranges for a shorter time period than of the other temperature range, and conveying lower temperature stage service water directly to the distribution stage and then to the consumption stage without being mixed with service water of the higher temperature stage;
- controlling flow of service water through the line means by valve means;
- and
- monitoring operation of the method and regulating operation of the valve means with programmable control means.
6 more elements
An apparatus for providing heated service water, comprising:
- a lower temperature stage having means for heating service water to a lower temperature range;
- a higher temperature stage having means for heating service water to a higher temperature range;
- first line means for coupling said lower temperature stage and said higher temperature stage in fluid communication;
- a distribution stage having means for mixing and circulating service water;
- second line means for coupling said higher temperature stage to said distribution stage in fluid communication;
- third line means for conveying service water from said distribution stage to a consumption stage;
- fourth line means for directly coupling said lower temperature stage to said distribution stage in fluid communication;
- valve means for controlling the flow of service water through said line means;
- and
- programmable control means for monitoring operation of the apparatus and regulating operation of said valve means such that service water of one of the temperature ranges is conveyed to said consumption stage for a shorter time period than service water of the other temperature range, and such that lower temperature stage water is conveyed directly to said distribution stage and then said consumption stage without being mixed with service water of said higher temperature stage.
7 more elements
Dependencies are inferred from the claim text.