A heat storage heat pump heater (HSHPH) incorporated into a heating, ventilation, and air conditioning (HVAC) system that provides heat to maintain the temperature in a compartment (e.g., a cabin of an electric vehicle) during both a heating cycle and defrosting cycle. This HSHPH contains a heat exchanger having an inlet and an outlet located in one or more manifolds and a core that includes one or more refrigerant tubes through which a refrigerant flows and a plurality of fins that extend between the tubes, the one or more refrigerant tubes being in fluid communication with the inlet and the outlet; and a phase change material (PCM) configured to store heat transferred from the refrigerant during a heating cycle and to transfer heat to the refrigerant during a defrosting cycle. The PCM changes phase at a temperature that is greater than or equal to 24° C.

A heat storage heat pump heater (HSHPH) incorporated into a heating, ventilation, and air conditioning (HVAC) system that provides heat to maintain the temperature in a compartment (e.g., a cabin of an electric vehicle) during both a heating cycle and defrosting cycle. This HSHPH contains a heat exchanger having an inlet and an outlet located in one or more manifolds and a core that includes one or more refrigerant tubes through which a refrigerant flows and a plurality of fins that extend between the tubes, the one or more refrigerant tubes being in fluid communication with the inlet and the outlet; and a phase change material (PCM) configured to store heat transferred from the refrigerant during a heating cycle and to transfer heat to the refrigerant during a defrosting cycle. The PCM changes phase at a temperature that is greater than or equal to 24° C.

A device for receiving, storing and releasing thermal energy, the device comprising a thermally insulated enclosure defining a cavity; at least one thermal energy storage material disposed within said cavity; at least one energy source configured for charging said thermal energy storage material with thermal energy; and a thermal energy converter configured for receiving thermal energy from said thermal energy storage material; wherein said thermally insulated enclosure comprises an inner wall, an outer wall and a substantially gas-tight interior void delimited by the inner wall and the outer wall, and wherein the outer wall comprises at least one flow regulator in fluid communication with the interior void and configured to supply and remove working fluids to and from the inner void.

A device for receiving, storing and releasing thermal energy, the device comprising a thermally insulated enclosure defining a cavity; at least one thermal energy storage material disposed within said cavity; at least one energy source configured for charging said thermal energy storage material with thermal energy; and a thermal energy converter configured for receiving thermal energy from said thermal energy storage material; wherein said thermally insulated enclosure comprises an inner wall, an outer wall and a substantially gas-tight interior void delimited by the inner wall and the outer wall, and wherein the outer wall comprises at least one flow regulator in fluid communication with the interior void and configured to supply and remove working fluids to and from the inner void.

A water heater system includes a tank for storing water; a flue assembly positioned within the tank, the flue assembly adapted to transfer heat from flue gases within the flue assembly to water in the tank; a burner in fluid communication with an inlet end of the flue assembly and operable in at least a high input mode and a low input mode to deliver the flue gases to the flue assembly, the exhaust assembly having a threshold temperature above which the exhaust assembly is not suitable; and an exhaust assembly including a fan, wherein at least in the low input mode, the flue gases condense in the flue assembly, and wherein operation of the fan reduces a temperature of the flue gases in the exhaust assembly to below the threshold temperature at least in the high input mode.

A heating system including a water conductor, a valve configured to cooperate with a fluid moving device which together operable to selectively circulate a heat transfer fluid in at least one of a first fluid circuit and a second fluid circuit, a heat exchanger and a blower operable to supply a stream of fluid over the heat exchanger, wherein the heat exchanger is fluidly connected to the first fluid circuit, wherein the heat exchanger being disposed to transfer heat between the heat transfer fluid and the heat exchanger, a coil fluidly connected to the second fluid circuit, wherein the coil is configured to be disposed on a drainage tube to transfer heat between the heat transfer fluid and the coil, a final heat exchanger configured for thermally coupling the first fluid circuit and the water conductor and the second fluid circuit and the water conductor.

A heating system including a water conductor, a valve configured to cooperate with a fluid moving device which together operable to selectively circulate a heat transfer fluid in at least one of a first fluid circuit and a second fluid circuit, a heat exchanger and a blower operable to supply a stream of fluid over the heat exchanger, wherein the heat exchanger is fluidly connected to the first fluid circuit, wherein the heat exchanger being disposed to transfer heat between the heat transfer fluid and the heat exchanger, a coil fluidly connected to the second fluid circuit, wherein the coil is configured to be disposed on a drainage tube to transfer heat between the heat transfer fluid and the coil, a final heat exchanger configured for thermally coupling the first fluid circuit and the water conductor and the second fluid circuit and the water conductor.

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 heat emitting radiator for use in a fluid circuit containing coolant therein, and which can generate substantial amounts of heat to heat larger spaces, such as in a home or business, while utilizing minimal power to run, and which can be utilized in various implementations and configurations. The radiator can be selectively activated or de-activated by, for example, a cell phone or the like whereby the fluid circuit in the radiator can be monitored for time of use, temperature and cost of use.