An apparatus and method for heating water using tankless water heater with improved rain cap.

A water heating system can include a water heater having a tank, and a first temperature sensor disposed toward a top end of the tank to measure a first temperature and a second temperature sensor disposed toward a bottom end of the tank to measure a second temperature. The water heating system can further include a controller communicably coupled to the first temperature sensor and the second temperature sensor, where the controller determines an amount of heated water in the tank based on a plurality of algorithms and measurements made by the first and second temperature sensors. The plurality of algorithms solves for at least one calculated temperature for at least one point between a first location of the first temperature sensor and a second location of the second temperature sensor, where the at least one calculated temperature is used to determine the amount of heated water in the tank.

A bacteria abatement water heater abates bacterial growth and includes a fluid-isolated heat exchanger; a water heating container that heats water to a high water temperature that is greater than or equal to a kill temperature for bacteria; a hot water delivery conduit including a transitional cooling zone in thermal communication with the fluid-isolated heat exchanger and that provides bacteria-free water from the water heating container at a safe temperature.

The present disclosure relate to a controller system and method for use in storage-style water heating systems that offers significant opportunities for energy saving. The controller system can adjust the water heating system in response to energy demand patterns of user fixtures. The controller system can detect quantity of heated water usage and produce a heated water usage profile. The controller system can determine the quantity or volume of the used heated water without a mechanical flow meter. The controller system can include a cost-effective, accurate, and easy-to-install water temperature sensors that provide measurements of the differentials between water temperatures without direct contact with the water. The water temperature sensors can be cost-effective and easy-to-install sensors that are attached to the water pipes through a strap or other attachment methods.

The present application provides a temperature control device for fluids, which comprises a furnace, a fluid pipe, a plurality of regenerative members, a burner, and an air control device. The burner heats the furnace to store heat to the regenerative members inside the furnace and conduct the thermal energy to the fluid pipe. The fluid pipi outputs a heated liquid. In addition, the regenerative members further produce and transport heated air to the air control device. The air control device converts the heated air to output cooled air.

The purpose of the present invention is to provide a hot water supplying apparatus which enables supply of hot water by utilizing waste heat of a pipe and a boiler as a heat source if there is a small quantity of residual hot water to use therefor, the residual hot water being required when using hot water of an instantaneous boiler, and a method for utilizing waste heat of a hot water supplying apparatus. The hot water supplying apparatus of the present invention for achieving said purpose comprises: a sensible heat exchanger for heating a heating fluid by means of combustion heat from a burner; a hot water supply heat exchanger for generating hot water by means of a heat exchange between the heating fluid heated by the sensible heat exchanger and direct water, and supplying the hot water to a faucet; and a pump for circulating the heating fluid via a heating fluid flow path which connects the sensible heat exchanger and the hot water supply heat exchanger, wherein the hot water supplying apparatus comprises: a signal reception unit for receiving a final hot water use signal; and a control unit for stopping the operation of the burner on the basis of the signal received by the signal reception unit and controlling the pump to circulate the heating fluid.

A magnetic induction heating system is described. The heating system includes a receptacle and a substrate positioned within the receptacle. The substrate includes ferrous material and forms a cavity that can be filled with fluid, such as water or other liquid. An induction coil at least partially encompasses the substrate. A controller provides alternating current to the induction coil. The alternating current in the induction coil induces an electromagnetic field that creates heat in the substrate. The heat in the substrate heats the fluid. The heating system can further include valves on either end of the substrate that enable fluid to move between the cavity and a chamber that is formed by the receptacle.

A tankless water heater for use in a recreational vehicle uses one or more water chambers, each with a heating element, through which cold water flows and is heated. The system is connected to the alternating current of the recreational vehicle and controls the water temperature by sending the current through one or more TRIACs that change the firing angle of the current in order to increase or decrease power flow to the heating elements depending on the sensed temperature of the outflowing water that is compared against the selected temperature or to match the amount of power flow desired to be sent to the heating elements. The user selects whether to control the unit via a temperature selection or an amount of power flow selection.

A water heating system can include a water heater having a tank, an inlet line, and an outlet line, where the inlet line provides unheated water to the tank, and where the outlet line draws heated water from the tank. The water heating system can also include multiple sensing devices, where each sensing device of the plurality of sensing devices measures a parameter associated with the tank. The water heating system can further include a controller communicably coupled to the plurality of sensing devices, where the controller determines an amount of heated water in the tank based on measurements made by the plurality of sensing devices.