An air-to-air heat pump system for a heating, ventilation and air conditioning (HVAC) system for a building includes a thermally insulated cool channel for pumping external air into the building, the cool channel having a volume for mixing external air with exhaust air of the building, a warm channel for pumping internal air, the warm channel including a cellular humidifier that restores humidity to internal air, heat pump coils located in the cool channel and the warm channel, the heat pump coils configured for transferring thermal energy from the cold channel to the warm channel, a first fan located in the cool channel and a second fan located in the warm channel, wherein the first and second fans are configured for moving air within a channel, all of the foregoing provided in a monoblock or Split structure located inside, or partially inside, a thermal circuit of the building.

An air-to-air heat pump system for a heating, ventilation and air conditioning (HVAC) system for a building includes a thermally insulated cool channel for pumping external air into the building, the cool channel having a volume for mixing external air with exhaust air of the building, a warm channel for pumping internal air, the warm channel including a cellular humidifier that restores humidity to internal air, heat pump coils located in the cool channel and the warm channel, the heat pump coils configured for transferring thermal energy from the cold channel to the warm channel, a first fan located in the cool channel and a second fan located in the warm channel, wherein the first and second fans are configured for moving air within a channel, all of the foregoing provided in a monoblock or Split structure located inside, or partially inside, a thermal circuit of the building.

A portable heater that includes a ceramic substrate with a heating element configured to define a field of direct radiation, a heat reflector with a concave reflective surface configured to define a field of reflective radiation, a grill cover mounted on the heat reflector, where the ceramic substrate is mounted on an interior side of the grill cover with the heating element facing the concave reflective surface such that the field of direct radiation onto the concave reflective surface is unobstructed.

A portable heater that includes a ceramic substrate with a heating element configured to define a field of direct radiation, a heat reflector with a concave reflective surface configured to define a field of reflective radiation, a grill cover mounted on the heat reflector, where the ceramic substrate is mounted on an interior side of the grill cover with the heating element facing the concave reflective surface such that the field of direct radiation onto the concave reflective surface is unobstructed.

A heater is disclosed that is installed in a window opening in a room for heating the room. The heater has a cabinet having an inner and an outer cabinet with an air gap therebetween, with a heating chamber in the inner cabinet. A burner is provided that is located on an outside wall of the heater. The burner has an inlet and an outlet with a combustion nozzle therebetween, with the burner outlet in communication with a respective serpentine heat exchange tube within said heating chamber where the heat exchange tube receives the hot products of combustion from its burner and discharges the products of combustion to the atmosphere. The heater has a blower that draws air from within the room and forces the air over and around the heat exchange tube(s) within the heating chamber discharges the heated air back into the room.

A heater is disclosed that is installed in a window opening in a room for heating the room. The heater has a cabinet having an inner and an outer cabinet with an air gap therebetween, with a heating chamber in the inner cabinet. A burner is provided that is located on an outside wall of the heater. The burner has an inlet and an outlet with a combustion nozzle therebetween, with the burner outlet in communication with a respective serpentine heat exchange tube within said heating chamber where the heat exchange tube receives the hot products of combustion from its burner and discharges the products of combustion to the atmosphere. The heater has a blower that draws air from within the room and forces the air over and around the heat exchange tube(s) within the heating chamber discharges the heated air back into the room.

A variable heatable 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. The circuit possesses at least one opening defined therein on sides of the radiator and top and bottom thereof which is in communication with the circuit, whereby a heating element can be inserted to heat the fluid.

A variable heatable 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. The circuit possesses at least one opening defined therein on sides of the radiator and top and bottom thereof which is in communication with the circuit, whereby a heating element can be inserted to heat the fluid.

The present disclosure provides methods and systems for tracking temperature profile of water in a hot water storage tank. The method performed by a control unit includes monitoring flow of water at one or more inlets and one or more outlets included in the tank to determine current locations of a plurality of water layers within the tank. The plurality of water layers changes corresponding positions within the tank based on water entering within and exiting from the tank. The method includes receiving a series of temperature values measured at a series of time instances from at least one temperature sensor mounted to the tank. The method includes electronically generating a temperature profile of the tank based at least on the current locations of the plurality of water layers and the series of temperature values.

The present disclosure provides methods and systems for tracking temperature profile of water in a hot water storage tank. The method performed by a control unit includes monitoring flow of water at one or more inlets and one or more outlets included in the tank to determine current locations of a plurality of water layers within the tank. The plurality of water layers changes corresponding positions within the tank based on water entering within and exiting from the tank. The method includes receiving a series of temperature values measured at a series of time instances from at least one temperature sensor mounted to the tank. The method includes electronically generating a temperature profile of the tank based at least on the current locations of the plurality of water layers and the series of temperature values.