A distributed heating and cooling network is described. In one aspect a distributed heating and cooling network used in a district heating architecture is described.

A distributed heating and cooling network is described. In one aspect a distributed heating and cooling network used in a district heating architecture is described.

The disclosed technology includes a heat pump having a thermal energy storage (TES) material. The heat pump can include a first heat exchanger to exchange heat between ambient air and refrigerant, a second heat exchanger to exchange heat between the refrigerant and air supplied to a climate-controlled space, and a third heat exchanger to exchange heat between the TES material and the refrigerant in a first fluid path and the refrigerant in a second fluid path. The heat pump can include a first compressor to circulate refrigerant to the first, second, and third heat exchangers and a second compressor to circulate refrigerant to the second and third heat exchangers. The first compressor can facilitate heat exchange between the ambient air and the TES material and the second compressor can facilitate heat exchange between the TES material and the air supplied to the climate-controlled space.

The disclosed technology includes a heat pump having a thermal energy storage (TES) material. The heat pump can include a first heat exchanger to exchange heat between ambient air and refrigerant, a second heat exchanger to exchange heat between the refrigerant and air supplied to a climate-controlled space, and a third heat exchanger to exchange heat between the TES material and the refrigerant in a first fluid path and the refrigerant in a second fluid path. The heat pump can include a first compressor to circulate refrigerant to the first, second, and third heat exchangers and a second compressor to circulate refrigerant to the second and third heat exchangers. The first compressor can facilitate heat exchange between the ambient air and the TES material and the second compressor can facilitate heat exchange between the TES material and the air supplied to the climate-controlled space.

A furnace for a heating, ventilation, and/or air conditioning (HVAC) system includes a heat exchanger tube including a tube inlet and a tube outlet, such that the heat exchanger tube is configured to receive combustion products via the tube inlet, circulate the combustion products through the heat exchanger tube, and discharge the combustion products via the tube outlet. Additionally, the furnace includes a collector box coupled to the heat exchanger tube and having a cavity configured to receive the combustion products via the tube outlet. The furnace includes a diverter plate disposed within the cavity, where the diverter plate overlaps the tube outlet to disperse the combustion products received via the tube outlet throughout the collector box.

A setting value change device is provided whereby change operations to correct temperature setting values or hot water amount values by drag operations are easy. A controller causes a display to display a drag button and a movement path on which the drag button moves. Additionally, the controller provides, on a touch sensor, a drag area for detecting a drag input on the drag button and a reference point disposed at a location off the movement path. Moreover, the controller is configured to set the drag area larger than the display range of the movement path, move the drag button to a crossing point where a straight line or specific curve connecting the reference point to a drag operation position in the drag area crosses the movement path, and change the temperature setting value to the value corresponding to the position of the drag button.

A setting value change device is provided whereby change operations to correct temperature setting values or hot water amount values by drag operations are easy. A controller causes a display to display a drag button and a movement path on which the drag button moves. Additionally, the controller provides, on a touch sensor, a drag area for detecting a drag input on the drag button and a reference point disposed at a location off the movement path. Moreover, the controller is configured to set the drag area larger than the display range of the movement path, move the drag button to a crossing point where a straight line or specific curve connecting the reference point to a drag operation position in the drag area crosses the movement path, and change the temperature setting value to the value corresponding to the position of the drag button.

The present invention provides for a combined heat and power system including at least one engine, operatively coupled to a generator, having at least one first heat source adapted to provide a first thermal energy output at a first temperature range, and at least one second heat source adapted to provide a second thermal energy output at a second temperature range, at least one first heat exchanger, operatively coupled to said at least one engine, and adapted to selectively receive and transfer at least a portion of any one or all of said first thermal energy output and said at least one second thermal energy output; and a dynamically adaptive heat storage system.

The present invention provides for a combined heat and power system including at least one engine, operatively coupled to a generator, having at least one first heat source adapted to provide a first thermal energy output at a first temperature range, and at least one second heat source adapted to provide a second thermal energy output at a second temperature range, at least one first heat exchanger, operatively coupled to said at least one engine, and adapted to selectively receive and transfer at least a portion of any one or all of said first thermal energy output and said at least one second thermal energy output; and a dynamically adaptive heat storage system.

A failsafe hydrocarbon-based gas (HBG) leak detection (HLD) and mitigation (HLM) system/method for use in heating, ventilation, and air conditioning (HVAC) systems that incorporates a hydrocarbon gas sensor (HGS), sensor signal conditioner (SSC), alarm status indicator (ASI), and digital control processor (DCP) is disclosed. The HGS detects ambient hydrocarbon gas (AHG) and presents a hydrocarbon sensor voltage (HSV) to the SSC. The DCP and SSC form a closed control loop (CCL) in which the SSC electrical characteristics are adjusted by the DCP such that the HSV is continuously and dynamically recalibrated to account for background HBG levels, changes in ambient air conditions, HGS manufacturing tolerances, and other field-specific operational conditions that impact the HGS detection capabilities. The DCP is configured to log alarms to the ASI if a HGS HBG leak is detected and optionally shutdown gas flow to one or more HBG target (HBT) system components.