This invention relates, but is not limited to, a method, a device, a computer program product and/or apparatus for performing diagnostics or fault determination of the operation of a boiler. The invention determines the fault status of the boiler by determining cold flow events in the time series output temperature data of the boiler and using the electrical energy data of the boiler in a time window of the cold flow event to determine the fault status based on a model. The invention further comprises a method of obtaining the model.

The present invention relates to a method for controlling a steam generating system (10) for a domestic steam cooking oven (40). A steam generator (26) and an inlet valve (16) are controlled by a regulating thermal switch (30) and a limiting thermal switch (32). The regulating thermal switch (30) and the limiting thermal switch (32) respond to a temperature within and/or at the steam generator (26). A threshold value of the limiting thermal switch (32) is higher than a threshold value (Ts) of the regulating thermal switch (30). The steam generator (26) is deactivated and the inlet valve (16) is activated by the regulating thermal switch (30), if the temperature (T) of the steam generator (26) exceeds the threshold value (Ts) of the regulating thermal switch (30).

The present invention relates to a method for controlling a steam generating system (10) for a domestic steam cooking oven (40). A steam generator (26) and an inlet valve (16) are controlled by a regulating thermal switch (30) and a limiting thermal switch (32). The regulating thermal switch (30) and the limiting thermal switch (32) respond to a temperature within and/or at the steam generator (26). A threshold value of the limiting thermal switch (32) is higher than a threshold value (Ts) of the regulating thermal switch (30). The steam generator (26) is deactivated and the inlet valve (16) is activated by the regulating thermal switch (30), if the temperature (T) of the steam generator (26) exceeds the threshold value (Ts) of the regulating thermal switch (30).

A method and system for monitoring a steam system through remotely monitoring numerous points of a saturated steam system, wherein the method compares a steam temperature sensed at a portion of the steam system by a first sensor to a threshold subcooled temperature derived by a pressure sensed by a second sensor at or near the same portion of the steam system, wherein the method emits a warning to the first sensor when the sensed saturated temperature exceeds the derived threshold subcooled temperature.

A method and system for monitoring a steam system through remotely monitoring numerous points of a saturated steam system, wherein the method compares a steam temperature sensed at a portion of the steam system by a first sensor to a threshold subcooled temperature derived by a pressure sensed by a second sensor at or near the same portion of the steam system, wherein the method emits a warning to the first sensor when the sensed saturated temperature exceeds the derived threshold subcooled temperature.

A safe water heater comprises a housing assembly, a box assembly, and a water inlet and outlet assembly. The housing assembly comprises a first housing with a mounting cavity. The box assembly comprises a water tank with a water-containing cavity. The water inlet and outlet assembly comprises a water inlet subassembly and a water outlet subassembly. The water inlet subassembly comprises a second water inlet pipe communicating with the water-containing cavity, a first water inlet pipe able to communicate with outside, and a leak-proof mechanism. The leak-proof mechanism is capable of sealing a water inlet of the second water inlet pipe.

A system for a power generation plant includes a boiler having a superheater, a first header fluidly coupled to an outlet of the superheater and being configured to receive steam from the superheater, a turbine elevated to a location generally adjacent to the outlet of the superheater, and a main steam piping system extending from the first header to the turbine and being configured to direct a flow of the steam from the first header to the turbine. The system further includes a flexible portion upstream from the first header operative to flex with respect to the first header and the boiler due to a thermal displacement of the boiler.

A system for a power generation plant includes a boiler having a superheater, a first header fluidly coupled to an outlet of the superheater and being configured to receive steam from the superheater, a turbine elevated to a location generally adjacent to the outlet of the superheater, and a main steam piping system extending from the first header to the turbine and being configured to direct a flow of the steam from the first header to the turbine. The system further includes a flexible portion upstream from the first header operative to flex with respect to the first header and the boiler due to a thermal displacement of the boiler.

The present invention relates to a method for controlling a steam generating system (10) for a domestic steam cooking oven (40). A steam generator (26) and an inlet valve (16) are controlled by a regulating thermal switch (30) and a limiting thermal switch (32). The regulating thermal switch (30) and the limiting thermal switch (32) respond to a temperature within and/or at the steam generator (26). A threshold value of the limiting thermal switch (32) is higher than a threshold value (Ts) of the regulating thermal switch (30). The steam generator (26) is deactivated and the inlet valve (16) is activated by the regulating thermal switch (30), if the temperature (T) of the steam generator (26) exceeds the threshold value (Ts) of the regulating thermal switch (30).

The present invention relates to a method for controlling a steam generating system (10) for a domestic steam cooking oven (40). A steam generator (26) and an inlet valve (16) are controlled by a regulating thermal switch (30) and a limiting thermal switch (32). The regulating thermal switch (30) and the limiting thermal switch (32) respond to a temperature within and/or at the steam generator (26). A threshold value of the limiting thermal switch (32) is higher than a threshold value (Ts) of the regulating thermal switch (30). The steam generator (26) is deactivated and the inlet valve (16) is activated by the regulating thermal switch (30), if the temperature (T) of the steam generator (26) exceeds the threshold value (Ts) of the regulating thermal switch (30).