A heating apparatus for generating a hot air flow comprises a single fan, a burner heating element and a resistance heating element. In this respect, an air passage that conducts air to be heated and a combustion air passage that leads to a burner adjoin the fan downstream, wherein a combustion air flow in the combustion air passage can be controlled by a control element associated with the combustion air passage.

A system and method for using waste heat from computing devices is disclosed. Computing devices may be positioned in a device rack and output exhaust air such that heat is transferred into a heat chamber with controllable temperature and a work item rack that is configured to hold one or more work items. By transferring the heat from the computing devices to heat or preheat the heat chamber, the captured heat can be used for useful work such as dehydrating, baking, drying or curing. Humidity can also be controlled, and conveyors may be used to improve the flow of work items. The energy reused may be calculated, recorded and attributed to the work items processed or the work performed by the computing devices.

A system and method for using waste heat from computing devices is disclosed. Computing devices may be positioned in a device rack and output exhaust air such that heat is transferred into a heat chamber with controllable temperature and a work item rack that is configured to hold one or more work items. By transferring the heat from the computing devices to heat or preheat the heat chamber, the captured heat can be used for useful work such as dehydrating, baking, drying or curing. Humidity can also be controlled, and conveyors may be used to improve the flow of work items. The energy reused may be calculated, recorded and attributed to the work items processed or the work performed by the computing devices.

A heat recovery system including a chamber having a cooling intake, an emissions intake, and a chamber exhaust, a heat recovery exchanger, a fluid circuit in communication with the heat recovery exchanger, a heat extraction exchanger, at least one controller operably linked to at least one operating component of the heat recovery system and at least one sensor configured to collect at least one environmental measurement and system related data from within the habitat. The system further includes a central thermal recovery unit in signal communication with the at least one controller and the at least one sensor. The central thermal recovery unit is configured for determining an operating instruction based on the at least one environmental measurement and system related data received from the at least one sensor and/or a third party database or interface, and transmitting the operating instruction to the at least one controller.

A heat recovery system including a chamber having a cooling intake, an emissions intake, and a chamber exhaust, a heat recovery exchanger, a fluid circuit in communication with the heat recovery exchanger, a heat extraction exchanger, at least one controller operably linked to at least one operating component of the heat recovery system and at least one sensor configured to collect at least one environmental measurement and system related data from within the habitat. The system further includes a central thermal recovery unit in signal communication with the at least one controller and the at least one sensor. The central thermal recovery unit is configured for determining an operating instruction based on the at least one environmental measurement and system related data received from the at least one sensor and/or a third party database or interface, and transmitting the operating instruction to the at least one controller.

A portable combination gas and wood fire pit device comprises a spark screen disposed over a fire bowl and a grating disposed across an open top of the fire bowl. A gas burner is disposed in the fire bowl and below the grating. A cover plate is disposed over the gas burner and spaced above the gas burner to cover an open cup and neck of the gas burner from above. The spark screen has a cylindrical shape with vertical side wall extending above the fire bowl and a solid section and a mesh section. The solid section has interior and exterior perimeters forming a silhouette or stencil defining an object comprising at least: an animal, a person, a landscape, or combinations thereof.

A portable combination gas and wood fire pit device comprises a spark screen disposed over a fire bowl and a grating disposed across an open top of the fire bowl. A gas burner is disposed in the fire bowl and below the grating. A cover plate is disposed over the gas burner and spaced above the gas burner to cover an open cup and neck of the gas burner from above. The spark screen has a cylindrical shape with vertical side wall extending above the fire bowl and a solid section and a mesh section. The solid section has interior and exterior perimeters forming a silhouette or stencil defining an object comprising at least: an animal, a person, a landscape, or combinations thereof.

A hybrid heating system for use with a gas supply and an electricity supply to provide a temperature controlled environment is provided, the hybrid heating system comprising: a hybrid heater, the hybrid heater including a firebox, a gas burner housed in the firebox and providing a first heat source, a variable pressure gas valve in fluid communication with the gas burner, a modulating actuator in mechanical communication with the variable pressure gas valve, a housing attached to the firebox, an electric element housed in the housing, the electric element providing a second heat source, a high duty cycle on off switch in electrical communication with the electric element; a printed circuit board in electrical communication with the modulating actuator and the high duty cycle on off switch; and a microprocessor which is in electronic communication with both the modulating actuator and the high duty cycle on off switch.

A hybrid heating system for use with a gas supply and an electricity supply to provide a temperature controlled environment is provided, the hybrid heating system comprising: a hybrid heater, the hybrid heater including a firebox, a gas burner housed in the firebox and providing a first heat source, a variable pressure gas valve in fluid communication with the gas burner, a modulating actuator in mechanical communication with the variable pressure gas valve, a housing attached to the firebox, an electric element housed in the housing, the electric element providing a second heat source, a high duty cycle on off switch in electrical communication with the electric element; a printed circuit board in electrical communication with the modulating actuator and the high duty cycle on off switch; and a microprocessor which is in electronic communication with both the modulating actuator and the high duty cycle on off switch.

Disclosed is a heating device, including a housing, and an electrothermal film and a fan arranged in the housing, wherein the fan is located at a bottom of the electrothermal film, the fan is provided with an air inlet facing upwards and an air outlet facing forwards, and the housing is provided with a vent hole at a position corresponding to the air outlet.