Disclosed is a heating device, including a first and second ends of an indoor water supply pipe communicated with a main water supply pipe and a water supply end of a radiator; a valve, a first temperature sensor, a heating and control module and a third temperature sensor arranged between the first and second ends; two ends of the heating and control module connected with a bypass pipe; a first and second ends of an indoor return water pipe communicated with a main return water pipe and a return water end of the radiator; a three-way valve and a second temperature sensor arranged between the first end and the second end of the indoor return water pipe; and a first and second ends of the water pump communicated with a third end of the three-way valve and the indoor water supply pipe.

Systems and methods for controlling a heating Technologies for controlling a heating unit are disclosed. In embodiments, the systems and methods determine a heating unit target temperature based at least in part on a duty cycle of at least one thermostat. The systems and methods may then determine a simulated outdoor temperature corresponding to the heating unit target temperature, and a resistance value corresponding to the simulated outdoor temperature. The systems and methods may then cause a resistance signal including or indicative of the resistance value to be provided to an outdoor temperature input for the heating unit, e.g., to cause the heating unit to modulate to the heating unit target temperature.

A method of operating a gas heater for water including the steps of restricting a water flow to the gas heater; determining a first rate of a first gas heating for the restricted water flow; adjusting the gas heating to the restricted water flow; repeating the previous steps until a heated water has a temperature above a temperature threshold; removing the restriction to the water flow to increase the water flow; and determining a second rate of a second gas heating for the increased water flow.

An apparatus and method to deter mold growth on the interior surfaces of buildings. The apparatus is a corded and plugged power supply with adjustable temperature and humidity sensors, logic circuitry, and split duplex receptacles. The method employs the apparatus, a portable heater, an array of portable fans, and catchments containing a hygroscopic substance such as calcium chloride. One receptacle controls the heater. The other receptacle controls the fans. There are three operative states: a heat-on/fans-on state at low temperature, a heat-off/fans-on state at high temperature and high humidity, and an idle state at high temperature and low humidity. The catchments capture water vapor circulated by the fans.

Disclosed is a system and method for monitoring hot water supply in a load control network, and more particularly for ensuring that there is sufficient hot water available for a customer participating in a demand response program that uses, at least in part, water heaters as a component of the demand response program. A multi-meter that is external to the water heater is used to monitor an electrical power supply circuit on the water heater, to report preferably volts, amps, and power factor of the water heater. The multi-meter may use these measured values to, in turn, determine a current charge state of the water heater and thus ensure maintenance of an adequate supply of hot water, even in times of demand response curtailment.

An equipment determination method of a cogeneration system includes the steps of: calculating a total hot water supply load for each day over a predetermined period longer than a specific period based on each unit hot water supply load for hour according to hot water supply use by consumers; setting as a representative period a specific period on which the total hot water supply load becomes at least a low load among the calculated total hot water supply load for each day; determining a capacity of the cogeneration equipment based on the total hot water supply load on the set representative period; and determining a capacity of the plurality of hot water storage tanks based on an amount of hot water supply load exceeding the capacity of the determined cogeneration equipment among each unit hot water supply load for two or more divided periods including the set representative period.

Disclosed are system 100 and method of energy efficient hot and cold water management. The system 100 comprises: a control unit 101 for dynamically controlling the functioning of the system 100; at least a water storage tank 102 with at least one of a water level sensor, at least a heating element 1021, at least a temperature sensor 1022 or any combination thereof; at least an auxiliary water storage tank 103 with at least one of a water level sensor, at least a temperature sensor 1032; at least a water mixer unit 105 having at least a temperature sensor 1051; a user interface unit 1012 for controlling and monitoring different parameters including temperature, water level, opening and closing of valves 108 and 109; and a power supply with power backup unit 104 for providing basic power for proper functioning of the system 100.

Methods and systems are provided for managing environmental conditions and energy usage associated with a site. One exemplary method of regulating an environment condition at a site involves a server receiving environmental measurement data from a monitoring system at the site via a network, determining an action for an electrical appliance at the site based at least in part on the environmental measurement data and one or more monitoring rules associated with the site, and providing an indication of the action to an actuator for the electrical appliance.

A gas valve for a gas appliance of a gas burner system. The gas valve is connected to a gas source via a gas pipe. The gas valve is disposed with a check valve body, wherein the check valve body allows gas in the gas pipe to flow into the gas valve and prohibits the gas in the gas valve to flow into the gas pipe so the check valve body can thereby prevent the gas in the gas valve from flwoing back to the gas pipe. When gas in the gas pipe flows to to another gas appliance of the gas burner system, the gas flowing to another gas appliance does not mix with air in the gas appliance, thereby reducing the iginition time and enhancing the combustion efficiency.

The present invention relates to a heating paint which can be used to generate a surface heating device on a wall. The invention further relates to a surface heating device which is suitable in particular for heating a room, and also to a kit for producing a surface heating device on a wall. The invention relates, moreover, to uses of the subjects of the invention, especially for producing a surface heating device and, respectively, for heating a room, and to corresponding methods.