A power plant for generating electrical energy comprises at least a heat storage device (100) for storing electrical energy in heat energy, comprising: an electrical heater (10) for converting electrical energy in heat energy; a heat storage body (30, 31) for receiving and storing heat energy of the electrical heater (10); a heat exchanger (50) for receiving heat energy from the heat storage body (30, 31). The power plant further comprises a turbine (120) and a generator (123). A heat storage fluid circuit (130) connects to the heat exchanger (50) or the heat exchangers (50) and a working fluid circuit (140) connects to the turbine (120). A fluid circuit heat exchanger (131) transfers heat from the heat storage fluid to a working fluid in the working fluid circuit (140).

A latent heat storage window includes a plurality of cells, an operation mechanism, and a magnetic material. The plurality of cells are formed by encapsulating a latent heat storage material including two or more components. The operation mechanism can be operated by a user. The magnetic material causes a specific component of the two or more components included in the latent heat storage material to be unevenly distributed when the operation mechanism is operated.

In a temperature control apparatus for controlling the temperature of a load by supplying high-temperature circulating liquid to the load, a device in which a helical channel portion of a first heat exchange channel through which circulating liquid flows is housed in a second heat exchange channel formed of a channel space in a hollow shell through which coolant flows is used as a heat exchanger for cooling the circulating liquid, cylindrical members are individually fitted on an inflow channel portion and an outflow channel portion connected to opposite ends of the helical channel portion of the first heat exchange channel, and the cylindrical members are each fixed to the shell of the heat exchanger with a weld.

A heat exchanger, comprising at least a double shell, wherein the lower portion of the inner space of the inner shell is filled with liquid phase change medium, and at least one coiler is provided in the upper portion. The heated fluid flows in the coiler. After the downstream side pipe of the coiler is pierced through the inner shell, at least one surrounding pipe is formed in the cavity between the double shells. The bottom heat exchange plate of heat exchanger of the inner shell is located above the heat source. The cavity between the two shells forms the flue gas passage. After bottom heat exchange plate of the inner shell is heated by the heat source, the flue gas rises from the bottom of perimeter of the inner shell along the flue gas passage and the heat is transferred to the heated fluid in the surrounding pipe. The heat device using the heat exchanger according to the present invention can significantly improve the efficiency of heat utilization.

A hot-water storage type boiler having a vortex guide portion is proposed. Since the present invention includes a spiral portion inside a casing, water supplied into the casing is moved to the upper side of the space part, while being in contact with fire tubes for a long time by moving spirally along the spiral portion, thereby improving heat exchange efficiency of the fire tubes. In addition, since the water supplied into the casing is moved spirally along the spiral portion to form a vortex, the flow of water moving in the direction of a hot-water discharge portion collides with a firebox lower surface part at a high speed, thereby having an effect of preventing scale from accumulating on the firebox lower surface part.

A hot-water storage type boiler having a vortex guide portion is proposed. Since the present invention includes a spiral portion inside a casing, water supplied into the casing is moved to the upper side of the space part, while being in contact with fire tubes for a long time by moving spirally along the spiral portion, thereby improving heat exchange efficiency of the fire tubes. In addition, since the water supplied into the casing is moved spirally along the spiral portion to form a vortex, the flow of water moving in the direction of a hot-water discharge portion collides with a firebox lower surface part at a high speed, thereby having an effect of preventing scale from accumulating on the firebox lower surface part.

A power plant for generating electrical energy comprises at least a heat storage device (100) for storing electrical energy in heat energy, comprising: an electrical heater (10) for converting electrical energy in heat energy; a heat storage body (30, 31) for receiving and storing heat energy of the electrical heater (10); a heat exchanger (50) for receiving heat energy from the heat storage body (30, 31). The power plant further comprises a turbine (120) and a generator (123). A heat storage fluid circuit (130) connects to the heat exchanger (50) or the heat exchangers (50) and a working fluid circuit (140) connects to the turbine (120). A fluid circuit heat exchanger (131) transfers heat from the heat storage fluid to a working fluid in the working fluid circuit (140).

A heat pump apparatus includes a use-side heat exchanger that cause heat exchange to be performed between a heat medium flowing from a heat-storage heat exchanger and a heat usage medium, and a flow-passage switching device that switches a flow passage for the heat medium to a first flow passage that circulates through a heat-reception-side heat exchanger and the heat-storage heat exchanger without extends through the use-side heat exchanger or a second flow passage that circulates through the heat-reception-side heat exchanger and the heat-storage heat exchanger via the use-side heat exchanger. Even when the temperature of the heat storage medium rises, heat received from a heat source can be stored in the heat storage medium by a heat pump, while a decrease of the efficiency of the heat pump can be reduced.

A heat pump apparatus includes a use-side heat exchanger that cause heat exchange to be performed between a heat medium flowing from a heat-storage heat exchanger and a heat usage medium, and a flow-passage switching device that switches a flow passage for the heat medium to a first flow passage that circulates through a heat-reception-side heat exchanger and the heat-storage heat exchanger without extends through the use-side heat exchanger or a second flow passage that circulates through the heat-reception-side heat exchanger and the heat-storage heat exchanger via the use-side heat exchanger. Even when the temperature of the heat storage medium rises, heat received from a heat source can be stored in the heat storage medium by a heat pump, while a decrease of the efficiency of the heat pump can be reduced.

The present disclosure provides a computer-implemented method of modulating energy consumption by a water provision system installed in a building, the water provision system comprising a heat pump configured to transfer thermal energy from outside the building to a thermal energy storage medium inside the building and a control module configured to control operation of the water provision system, the water provision system being configured to provide water heated by the thermal energy storage medium to one or more water outlets and further configured to supply heated water to a central heating system configured to raise an indoor temperature of the building, the method being performed by the control module and comprising: determining a level of energy demands of a geographical region comprising the building; and upon determining that the level of energy demands is low, operating the heat pump to store thermal energy in the thermal energy storage medium, and operating the water provision system to supply heated water to the central heating system using thermal energy stored in the thermal energy storage medium.