Flow modulator (10) for a fluid like combustion gas, comprising: a housing (11), a modulator body (14) positioned with the housing (11), and a valve body (18) positioned with the housing (11). The modulator body (14) has a flow channel (15) and an opening (16) providing together a flow passage (17) for the fluid. The valve body (18) is provided by a foil element (19), wherein the foil element (19) has an opening (20) for the fluid, wherein the foil element (19) is rotatable relative to the modulator body (14) to modulate the flow of the fluid by adjusting an overlap between the opening (20) of the valve body (18) and the flow passage (17) of the modulator body (14), and wherein the foil element (19) is positioned up-stream of the modulator body (14) such that an inlet pressure of the fluid presses the foil element (19) against the modulator body (14) thereby providing a sealing level between the foil element (19) and the modulator body (14).

A hybrid heat system, a capacity allocation control method thereof, a readable storage medium and a control system. The hybrid heat system includes a plurality of modular heat recovery units with an air-conditioning mode and a water-heating mode, and a plurality of modular air-conditioning units with an air-conditioning mode, the capacity allocation control method including: a classification step S100 for classifying the compressors in the plurality of modular heat recovery units and the plurality of modular air-conditioning units according to unit category, unit state and start-stop state; a sorting step S200 for sorting classified compressors according to operating time; and a search step S300 for searching target compressors from sorted compressors based on preset energy efficiency search criteria.

A control system for a burner assembly used in vehicles and boats particularly for a coolant storage type heater and a method of operating the control system. Sensors for producing a resistance change as a function of temperature are utilised to send a continuous signal to the control system from both the coolant and the potable water by being in contact with coolant and potable water throughout control system operation. The sensors and the control system allow flexible heater operation and may further dependent upon the user where commands can be entered to a touch screen connected to the control board of the control system.

Method of operating a thermal energy system coupled to a building energy system which selectively provides heating and/or cooling to a building, the method comprising the steps of; (a) providing a thermal energy system comprising a heat pump system having an output side and an input side, a heat energy working fluid loop extending into the building, the output side being coupled to a building by the heat energy working fluid loop to provide heating to the building from the thermal energy system, a cooling demand working fluid loop extending into the building, a first geothermal system in which a working fluid is circulated and a second geothermal system in which a working fluid is circulated; (b) selectively thermally connecting the first geothermal system to the input side of the heat pump system, or to the heat energy working fluid loop to provide heating to the building; and (c) selectively thermally connecting the second geothermal system to the input side of the heat pump system, or to the cooling demand working fluid loop to provide cooling to the building.

An energy system includes a turbine flue heat exchanger feeding a storage tank arranged to deliver water on a high temperature (90° C.) line to supply circuits. A heat pump and storage tank are arranged to deliver lower temperature (45° C.) water on a low temperature line to the supply circuits. A number of the supply circuits are each arranged to receive high temperature water, receive low temperature water, and use these flows to deliver a process water supply at a desired high, low or intermediate temperature (65° C.). In some each supply circuits the blending is controlled by control of a low temperature line pump according to temperature of the process outlet. The low temperature tank is supplied by a heat pump the inlet of which is fed by a heat recovery heat exchanger which recovers waste heat from a plant, and so it is more efficient than if it received cold water. Electrical energy for the heat pump is at least partly supplied by the high temperature heater gas turbine. Overall, the system has excellent energy efficiency due to the manner in which waste heat is utilized, improved efficiency of a heat pump, and real time control of the high and low water lines.

A system for heating a building, including a heat generator to heat a carrier fluid, at least one radiating element for transferring heat to a thermal load included in a building, a delivery conduit for transferring the carrier fluid from the heat generator to the radiating element, a return conduit for transferring the carrier fluid from the radiating element to the heat generator, a three-way valve arranged along the delivery conduit and connected to the return conduit, the three-way valve being operable to mix the carrier fluid in the delivery conduit to the carrier fluid in the return conduit, a plurality of temperature sensors arranged to measure the temperature of the carrier fluid and a temperature of the environment outside the building, and a control unit operatively connected to the heat generator, to the three-way valve and to the temperature sensors.

An operating method for an electric heater may include heating a fluid passing the electric heater to an outlet temperature by at least one heating element and operating the electric heater in one of a normal mode or a protection mode. In the normal mode, the at least one heating element may be supplied with at least one of a direct current and a direct voltage. In the protection mode, electrical power supplied to the at least one heating element may be regulated by pulse width modulation. The electric heater may be operated in the normal mode if a reference temperature is less than or equal to a critical temperature and in the protection mode if the reference temperature is greater than the critical temperature.

The wireless wall thermostat utilizes a push-contact mechanical system that allows a user to raise or lower the temperature within a space by applying a force on the top or bottom center of the front of the thermostat. The perpendicular force applied by the user generates a moment arm around pivot connectors, which rotates the thermostat clockwise or counter-clockwise. When rotated clockwise or counter-clockwise, contact buttons attached to the back of the thermostat come into contact with the trigger tabs of a stationary trigger plate mounted to a wall through use of an electromagnetic attraction between a steel disc and a magnet. When the trigger tabs press the contact buttons, the contact buttons send a signal to the central processing unit of the thermostat's internal circuit board to modulate the temperature setting. In addition, the wireless wall thermostat can be detachable by utilizing a magnetic release smart mount.

The wireless wall thermostat utilizes a push-contact mechanical system that allows a user to raise or lower the temperature within a space by applying a force on the top or bottom center of the front of the thermostat. The perpendicular force applied by the user generates a moment arm around pivot connectors, which rotates the thermostat clockwise or counter-clockwise. When rotated clockwise or counter-clockwise, contact buttons attached to the back of the thermostat come into contact with the trigger tabs of a stationary trigger plate mounted to a wall through use of an electromagnetic attraction between a steel disc and a magnet. When the trigger tabs press the contact buttons, the contact buttons send a signal to the central processing unit of the thermostat's internal circuit board to modulate the temperature setting. In addition, the wireless wall thermostat can be detachable by utilizing a magnetic release smart mount.

In a split system heat pump cooling and heating system, an auxiliary hot water storage tank is provided as an energy storage bank. Two sets of coils run through this storage tank, a first set carrying hot refrigerant from the heat pump to deposit energy and a second set carrying hot potable water to remove energy. Valve and switch matrixes are operated at the heat pump to provide hot potable water from the energy storage bank during both normal space heating and cooling operations of the heat pump.