A 3D flame projection system is provided, comprising a light source and a light-transmittable hood. The light source is disposed inside the light-transmittable hood. The 3D flame projection system further comprises a lens which has different refractive indexes for refracting light generated by the light source and splitting the light into a plurality of light beams at different angles and/or has different light transmittances for allowing light generated by the light source to partially transmit through the lens. The 3D flame projection system has the following advantages: simple structure, low cost, small space occupation, realistic flame dancing effect, and it is advantageous for realization of ultrathin production of fireplaces.

The described technology provides an electric heating apparatus with multiple heating lamps that can increase the heat emitted by a single heating apparatus, thereby allowing a minimal number of heating apparatus installations in the space where heating is needed, and can prevent fires by turning the power off immediately in the event of the heating apparatus falling off. According to the described technology, multiple heating lamps may be positioned within the reflector dish, and the heating lamps may have particular inclinations to allow a broader range of irradiation and increase efficiency in terms of installing, maintaining, and operating the electric heating apparatus; the heat of the reflector dish and the heating lamps themselves may be discharged by way of conduction at the upper portion of the reflector dish.

The described technology provides an electric heating apparatus with multiple heating lamps that can increase the heat emitted by a single heating apparatus, thereby allowing a minimal number of heating apparatus installations in the space where heating is needed, and can prevent fires by turning the power off immediately in the event of the heating apparatus falling off. According to the described technology, multiple heating lamps may be positioned within the reflector dish, and the heating lamps may have particular inclinations to allow a broader range of irradiation and increase efficiency in terms of installing, maintaining, and operating the electric heating apparatus; the heat of the reflector dish and the heating lamps themselves may be discharged by way of conduction at the upper portion of the reflector dish.

A CHP optimal dispatching model is a mixed integer programming model and is used for a district heating system (DHS) comprising a heat source, a heating network and a heat load, and the heating network comprises a heat transmission network and a heat distribution network. A plurality of heating areas is divided, and one day is divided into a plurality of time periods; the heat transmission loss of the heat distribution network is omitted, and a heat transmission network model taking transmission time delay of the heating network into consideration is established according to the heat transmission network; a terminal heat consumer model capable of reflecting indoor temperature is established; and a combined optimal dispatching model comprising conventional generators, wind power units, CHP units, electric boilers and heat storage tanks is established.

A CHP optimal dispatching model is a mixed integer programming model and is used for a district heating system (DHS) comprising a heat source, a heating network and a heat load, and the heating network comprises a heat transmission network and a heat distribution network. A plurality of heating areas is divided, and one day is divided into a plurality of time periods; the heat transmission loss of the heat distribution network is omitted, and a heat transmission network model taking transmission time delay of the heating network into consideration is established according to the heat transmission network; a terminal heat consumer model capable of reflecting indoor temperature is established; and a combined optimal dispatching model comprising conventional generators, wind power units, CHP units, electric boilers and heat storage tanks is established.

A method for controlling an on-demand high volume capable fluid heating system that supplies a total heating power at a turndown ratio and a total flowrate of a fluid supply, the fluid heating system comprising a plurality of heat exchangers fluidly connected in parallel, each of the plurality of heat exchangers comprising: a fluid conductor, wherein each of the plurality of heat exchangers contributes to the total heating power and a portion of the total flowrate of the fluid supply through the fluid conductor; an inlet conductor configured to connect the fluid supply to the plurality of heat exchangers; an outlet conductor configured for receiving the fluid supply downstream of the plurality of heat exchangers; an auxiliary conductor connecting the inlet conductor at a first location and the outlet conductor, the auxiliary conductor comprising a modulating valve; and a pump disposed downstream from the first location on the inlet conductor.

A method for controlling an on-demand high volume capable fluid heating system that supplies a total heating power at a turndown ratio and a total flowrate of a fluid supply, the fluid heating system comprising a plurality of heat exchangers fluidly connected in parallel, each of the plurality of heat exchangers comprising: a fluid conductor, wherein each of the plurality of heat exchangers contributes to the total heating power and a portion of the total flowrate of the fluid supply through the fluid conductor; an inlet conductor configured to connect the fluid supply to the plurality of heat exchangers; an outlet conductor configured for receiving the fluid supply downstream of the plurality of heat exchangers; an auxiliary conductor connecting the inlet conductor at a first location and the outlet conductor, the auxiliary conductor comprising a modulating valve; and a pump disposed downstream from the first location on the inlet conductor.

An electric heater fire extinguishing strategy customization mechanism includes: a timing device for outputting the current operation time; a real-time display device installed onto an integrated circuit board of the electric heater and connected to the timing device for receiving the current operation time and displaying a red string corresponding to the real-time display and too-long operation information of when the current operation time exceeds a limit; a position sensing device installed onto the dot-matrix imaging mechanism for detecting the current position of the dot-matrix imaging mechanism, determining the difference between the current position and a predetermined fixed position, wherein the difference includes a horizontal change and a vertical change, and issuing a jitter sensing signal when the horizontal change changes between positive and negative values or the vertical change changes between positive and negative values. The electric heater includes a fire extinguishing function.

A 3D flame projection system is provided, comprising a light source and a light-transmittable hood. The light source is disposed inside the light-transmittable hood. The 3D flame projection system further comprises a lens which has different refractive indexes for refracting light generated by the light source and splitting the light into a plurality of light beams at different angles and/or has different light transmittances for allowing light generated by the light source to partially transmit through the lens. The 3D flame projection system has the following advantages: simple structure, low cost, small space occupation, realistic flame dancing effect, and it is advantageous for realization of ultrathin production of fireplaces.

A climate control system is operated by receiving climate information from climate control input devices at one or more plugin modules. The climate information is communicated from the plugin modules to a main control unit, which determines operating instructions for climate output devices and air inlets. When it is detected that the main control unit is not operational, the control system switches to a standby control unit if so equipped. The climate information is then communicated from the plugin modules to the standby control unit. The standby control unit determines operating instructions for the climate output devices and air inlets based on the climate information. When it is detected that the standby control unit is also not operational, the plugin modules switch to an autonomous mode such that operating instructions for the climate output devices and air inlets are determined by the plugin modules.