The present disclosure relates generally to protective devices and cover members. In some embodiments, cover members are provided that are operable to protect covered components and to allow heat dissipation from the components. Cover members of the present disclosure are suitable for use with heat exchangers including, for example, those provided with hot water pressure washers.

An outdoor-use heating mat includes a mat body, a water container, a substance container, and a first circulating pump. The water container is disposed in the mat body. The water container has a first inlet and a first outlet. The substance container is configured to hold a substance that can chemically react with water and release thermal energy. The substance container has a second inlet, a second outlet, and a normally closed feed port. Two ends of the first circulating pump are in communication with the first outlet and the second inlet, respectively. The second outlet is in communication with the first inlet. The outdoor-use heating mat can be heated, easy to carry.

An outdoor-use heating mat includes a mat body, a water container, a substance container, and a first circulating pump. The water container is disposed in the mat body. The water container has a first inlet and a first outlet. The substance container is configured to hold a substance that can chemically react with water and release thermal energy. The substance container has a second inlet, a second outlet, and a normally closed feed port. Two ends of the first circulating pump are in communication with the first outlet and the second inlet, respectively. The second outlet is in communication with the first inlet. The outdoor-use heating mat can be heated, easy to carry.

Disclosed embodiments include apparatuses, systems, and methods for circulating and managing temperature of a liquid in a vessel. An illustrative embodiment includes an apparatus having a control section with a pump to receive liquid and expel the liquid via a pump outlet, a temperature interface to modulate a supply of energy, and a control interface to direct operation of the pump and the temperature control interface. An immersible section is configured to be at least partially immersed in the liquid and includes at least one temperature control surface to heat the liquid in response to the energy received from the temperature interface, a pump inlet to draw the liquid into the pump, and a filtration housing covering the at least one temperature control surface and the pump inlet to prevent particles over a predetermined size from passing into the pump inlet and coming into contact with the at least one temperature control surface.

Disclosed embodiments include apparatuses, systems, and methods for circulating and managing temperature of a liquid in a vessel. An illustrative embodiment includes an apparatus having a control section with a pump to receive liquid and expel the liquid via a pump outlet, a temperature interface to modulate a supply of energy, and a control interface to direct operation of the pump and the temperature control interface. An immersible section is configured to be at least partially immersed in the liquid and includes at least one temperature control surface to heat the liquid in response to the energy received from the temperature interface, a pump inlet to draw the liquid into the pump, and a filtration housing covering the at least one temperature control surface and the pump inlet to prevent particles over a predetermined size from passing into the pump inlet and coming into contact with the at least one temperature control surface.

The disclosed technology includes an on-demand water heater which uses an electric heat source to heat the water. The on-demand water heater can have a low fluid capacity heating chamber which has an inlet and an outlet, an electric heat source for heating the water, and a controller to control the electric heat source and maintain the temperature of the water at a predetermined temperature setting. The on-demand water heater can be powered by a direct current power source. The on-demand water heater can also utilize a solar thermal system to provide additional heat to the water.

The disclosed technology includes an on-demand water heater which uses an electric heat source to heat the water. The on-demand water heater can have a low fluid capacity heating chamber which has an inlet and an outlet, an electric heat source for heating the water, and a controller to control the electric heat source and maintain the temperature of the water at a predetermined temperature setting. The on-demand water heater can be powered by a direct current power source. The on-demand water heater can also utilize a solar thermal system to provide additional heat to the water.

A heating unit for heating carrying chambers is provided. In the heating unit, fluid can be stored. The heating unit can carry fluid from one location to another location by means of a vehicle. The improvement is that the heating unit includes at least one flexible body wherein hot vapor can be filled and at least one support element positioned in the at least one flexible body in order to be positioned between the carrying chamber and the inner wall of the container.

The invention relates to a hot water storage system, in particular for mobile applications, comprising a water reservoir (6), a pump (10), a heat exchanger (20) and a hot water storage tank (40), characterized in that the hot water storage tank (40) has a variable storage volume and in that a drain line (60) is provided which connects the hot water storage tank (40) to the water reservoir (6).

A water heating system for a vehicle includes, among other things, a container and an assembly of a vehicle. The assembly has a thermal energy level that increases as a result of operating the vehicle. The system further includes a path that communicates water back-and-forth between the container and the assembly to increase amount of thermal energy within water that is in the container, and an outlet configured to dispense water from the container for use by a user.