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1. (WO2019006461) WATER HEATER USAGE PROFILING UTILIZING ENERGY METER AND ATTACHABLE SENSORS
ملاحظة: نص مبني على عمليات التَعرف الضوئي على الحروف. الرجاء إستخدام صيغ PDF لقيمتها القانونية

WHAT IS CLAIMED IS:

1. A water heating system comprising:

a reservoir;

cold and heated water pipes connected to the reservoir;

a cold water temperature sensor attached to the cold water pipe and located proximate to the reservoir, wherein the cold water temperature sensor is configured to measure a cold water temperature of the cold water pipe and output a cold water temperature signal representative of the sensed cold water temperature;

a heated water temperature sensor configured to measure a heated water temperature and output a heated water temperature signal representative of the sensed heated water temperature; and

a controller system comprising:

an energy meter configured to measure energy usage of the water heating system; and

a processor configured to receive the heated and cold water temperature signals, wherein the processor is further configured to determine a volume of used heated water using the received heated and cold water temperature signals.

2. The water heating system of claim 1, wherein the cold water temperature sensor is

attached to an exterior surface of the cold water pipe.

3. The water heating system of claim 1, wherein the controller system is configured to determine a duration of heated water draw using the received cold water temperature signals.

4. The water heating system of claim 1, wherein the controller system is configured to compensate the cold water temperature signal based on the configuration of the cold water pipe.

5. The water heating system of claim 1, wherein the processor is further configured to

produce a profile of the used heated water.

6. The water heating system of claim 1, wherein the processor is further configured to calculate a standby loss factor of the water heating system.

7. The water heating system of claim 1, wherein the volume of used heated water is

determined based on difference between the sensed cold and heated temperatures.

8. A controller system for use in a storage-style water heater, the controller system

comprising:

first and second sensors respectively attached to cold and heated water pipes of the storage-style water heater, wherein the first and second sensors are configured to respectively transmit cold and heated water temperature measurements;

an energy meter configured to measure energy usage of the storage-style water heater; and

a processor configured to receive the cold and heated water temperature measurements and derive a volume of used heated water based on the cold and heated water temperature measurements.

9. The controller system of claim 8, wherein the volume of used heated water is derived using a difference between the cold and heated water temperature measurements.

10. The controller system of claim 8, wherein the processor is further configured to derive a usage profile of the storage-style water heater based on the volume of used heated water.

11. The controller system of claim 8, wherein the first and second sensors are respectively strapped onto the cold and heated water pipes.

12. The controller system of claim 8, wherein the first sensor is located near an inlet port of the storage- style water heater.

13. A method of determining volume of used heated water in a storage-style water heater, wherein the storage-style water heater receives cold water at a cold water inlet and outputs the used heated water through a heated water outlet, the method comprising: determining a thermal energy of the used heated water outputted by the storage- style water heater;

determining a temperature differential between temperatures of the cold and heated water; and

deriving a volume of the used heated water.

14. The method of claim 13, wherein the method further comprises measuring an input energy supplied to the storage-style water heater.

15. The method of claim 14, wherein the method further comprises measuring a standby energy loss, and the thermal energy output is determined by subtracting the standby energy loss from the input energy.

16. The method of claim 13, wherein the method further comprises creating a heated water usage profile based on the volume of the used heated water.

17. The method of claim 13, wherein the method further comprises calculating a standby energy loss rate of the storage-style water heater.

18. The method of claim 13, wherein the method further comprises calculating a flow rate of the storage-style water heater while outputting the used heated water.

19. The method of claim 16, wherein the heated water usage profile includes a volume of heated water remaining in the storage-style water heater after the used heated water has been outputted.

20. The method of claim 16, further comprising determining a duration of heated water draw using a plurality of temperature measurements of the cold water inlet.