There is described an apparatus for storing heat. The apparatus comprises a thermal mass for storing heat, the thermal mass having a first surface and a second surface. Fins are provided on the first surface and the second surface for accelerating heat transfer to and from the thermal mass. A displacement mechanism is secured to the thermal mass for translating the first surface to a first environment, e.g., a duct, while removing the second surface and its fins from a second environment, e.g., outside, and for translating the second surface to the second environment while removing the first surface and its fins from the first environment.

A heater including a housing, a first tankless heater, a second tankless heater, a first and second flow directing elements, the first flow directing element in communication with the first tankless heater and the second flow directing element and the second flow directing element in communication with the second tankless heater, and a controller in communication with the first and second tankless heaters and the first and second flow directing elements, the controller configured to control the first and second flow directing elements to control flow to one or both of the first and second tankless heaters.

Provided is a faucet device for an aircraft lavatory unit, wherein a second joint and a third joint are joined by inserting the third joint of a heater module into a second joint of a valve module, and screw members are used to fasten a first case and a second case. As a result, the valve module and the heater module are joined in series via the second joint and the third joint. A first connector of a controller module is joined to a third connector of the valve module and a second connector of the controller module is joined to a fourth connector of the heater module. The first joint of the valve module is joined to a water supply pipe. A fourth joint of the heater module and a faucet main body are joined via a pipe.

A heating device having a holding apparatus to accommodate a control unit, the holding apparatus having a receiving part. The receiving part has at least two struts, and a receptacle for the control unit is developed between the at least two struts. A holding apparatus for a heating device is also described.

A froth heater can include an outer case defining an inner cavity, an inlet in fluid communication with the inner cavity, and an outlet in fluid communication with the inner cavity. The froth heater can include a heater core inserted into inner cavity and configured to form a flow path between an inner wall of the outer case and the heater core between the inlet and the outlet. The heater core can include a core cavity configured to receive a heater therein to heat the heater core.

An apparatus for heating petroleum, petrochemical, chemical process fluids, and boiler feed water or steam generation with a combination, or individual operation, of electrical elements and fired burners. The apparatus includes a radiant heating section and a flue gas stack for exhausting a combustion gas to the atmosphere. The radiant section includes one or more process coils, one or more fuel-fired burners for combusting a fuel and producing the combustion gas, where the one or more fuel-fired burners are arranged to provide radiant energy to a first area of the one or more process coils, and one or more electrical heating elements arranged to provide radiant energy to a second area of the one or more process coils. The one or more electrical heating elements are configured to provide 5% or more of a combined maximum energy output of the fuel-fired burners and the electrical heating elements.

A froth heater can include an outer case defining an inner cavity, an inlet in fluid communication with the inner cavity, and an outlet in fluid communication with the inner cavity. The froth heater can include a heater core inserted into inner cavity and configured to form a flow path between an inner wall of the outer case and the heater core between the inlet and the outlet. The heater core can include a core cavity configured to receive a heater therein to heat the heater core.

A water heater includes a water tank and a flow-through heating element. The water tank contains heated water. The flow-through heating element is located in the lower portion of the water tank and heats water as water is passed through an interior channel of the heating element. In another configuration, the water heater further includes a recirculation line and the heating element further includes an input end external of the water tank to receive water to be heated and an output end to output heated water into the water tank. The recirculation line transports water from the water tank to the input end of the heating element that is external of the water tank.

A heating and/or cooling temperature adjusting apparatus disposed proximate a point of use comprising a heat exchange structure, at least one thermal mass unit comprised of a material which changes phase at a predetermined temperature, and a housing which at least partially encloses the heat exchange structure and thermal mass unit. Additionally, a plurality of thermal mass units can be employed, each with equivalent, or differing, temperature threshold points for conversion between solid, liquid or gaseous phases. The presence of the thermal mass unit at the point of use allows for the heating/cooling system to rapidly adjust the temperature of the room while simultaneously decreasing the duty cycle of the heating/cooling generator (e.g. boiler).

Embodiments of the invention provide a heater including a housing, a first tankless heater, a second tankless heater, a first and second flow directing elements, the first flow directing element in communication with the first tankless heater and the second flow directing element and the second flow directing element in communication with the second tankless heater, and a controller in communication with the first and second tankless heaters and the first and second flow directing elements, the controller configured to control the first and second flow directing elements to control flow to one or both of the first and second tankless heaters.