Mobile water heating systems for producing hot water are disclosed herein. In one embodiment, a mobile water heating system includes a water heater having an oval-cylindrical shape. The water heater includes a shell, a lid and a water reservoir having a screen. A first heating coil and a second heat
Mobile water heating systems for producing hot water are disclosed herein. In one embodiment, a mobile water heating system includes a water heater having an oval-cylindrical shape. The water heater includes a shell, a lid and a water reservoir having a screen. A first heating coil and a second heating coil can extend between the screen and a first cone and a second cone, respectively. A first burner and a second burner can be configured to mix and combust fuel and air and direct the resulting flames through the heating coils. Pall rings can at least partially fill an interior volume of the water heater and the combustion of the fuel and air can heat the heating coils and the pall rings. Water can be heated by being directed through the heating coils and through a water manifold positioned to spray water on the pall rings.
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1. A water heating system comprising: a water heater, the water heater comprising— a shell defining an internal volume;a manifold having a plurality of nozzles positioned to spray a first portion of water within the internal volume;a heating coil positioned at least partially within the internal vol
1. A water heating system comprising: a water heater, the water heater comprising— a shell defining an internal volume;a manifold having a plurality of nozzles positioned to spray a first portion of water within the internal volume;a heating coil positioned at least partially within the internal volume and having a tube coiled into a cylinder, wherein the tube includes a water inlet and a water outlet, and wherein the water inlet is positioned to receive a second portion of water that flows through the coiled tube to the water outlet; anda burner positioned to direct flames into the cylinder to heat the first portion of water and the second portion of water. 2. The water heating system of claim 1, wherein the heating coil is a first heating coil, the water inlet is a first water inlet, the water outlet is a first water outlet, the tube is a first tube, and the burner is a first burner, and wherein the water heater further comprises: a second heating coil positioned at least partially within the internal volume and having a second tube coiled into a second cylinder, wherein the second tube includes a second water inlet and a second water outlet, and wherein the second water inlet is positioned to receive a third portion of water and direct the third portion of water through the second coiled tube to the second water outlet; anda second burner positioned to direct flames into the second cylinder to heat the first portion of water and the third portion of water. 3. The water heating system of claim 2 wherein a largest dimension of the shell is less than 4.1 meters, and wherein the water heating system further comprises: a fuel tank positioned to deliver fuel to the first burner and to the second burner; anda ground vehicle carrying the fuel tank and the water heater. 4. The water heating system of claim 1, further comprising a vaporization coil having a fuel inlet for receiving fuel and a fuel outlet for providing fuel to the burner, wherein the vaporization coil is positioned to receive heat via the flames from the burner and transform at least a portion of the fuel in the vaporization coil from a liquid fuel to a gaseous fuel. 5. The water heating system of claim 1 wherein the manifold includes a junction configured to transfer water to the inlet of the heating coil. 6. The water heating system of claim 1 wherein the heating coil further includes a plurality of welds joining adjacent tube portions together to reduce expansion of the heating coil. 7. A mobile water heater comprising: a water reservoir positioned to receive and contain water;a shell removably coupled to the water reservoir and having an internal volume;a heating coil positioned at least partially within the internal volume and comprising a coiled tube formed into a cylinder, the coiled tube configured to direct a first portion of water to the water reservoir;a manifold having a plurality of nozzles positioned to spray a second portion of water within the internal volume; anda burner positioned to direct flames into the cylinder to heat the first portion of water and the second portion of water. 8. The mobile water heater of claim 7, further comprising: a ground vehicle; anda fuel tank, wherein the water reservoir and the fuel tank are operably carried by the ground vehicle. 9. The mobile water heater of claim 7, further comprising a conduit that delivers fuel to the burner, wherein the conduit is configured to transform at least a portion of liquid fuel in the conduit into gaseous fuel via heat produced by the flames from the burner. 10. The mobile water heater of claim 7, further comprising: a lid having a plurality of exhaust vents, wherein the lid is removably coupled to the shell and the manifold is operably coupled to an underside of the lid; anda vent assembly operably coupled to the topside of the lid to receive exhaust from the shell, the vent assembly including: a plurality of diffusers, wherein individual diffusers are positioned in individual exhaust vents to reduce moisture in the exhaust gases exiting the exhaust vents;an enclosure removably coupled to the lid; andmedia positioned within the enclosure to gather moisture from the exhaust gases. 11. The mobile water heater of claim 7 wherein the heating coil is a first heating coil, wherein the burner is a first burner, and wherein the mobile water heater further comprises: a second heating coil; anda second burner, the first and second heating coils positioned side by side within the shell. 12. The mobile water heater of claim 7 wherein the coiled tube comprises a plurality of individual coils, and wherein adjacent coils are welded together at a plurality of weld joints. 13. A water heater comprising: a water reservoir positioned to receive and contain water;a shell removably coupled to the water reservoir and having an internal volume;a manifold having a plurality of nozzles positioned to spray water within the internal volume;a first flame tube and a second flame tube, wherein the first and second flame tubes are positioned at least partially within the internal volume;a first burner positioned to direct flames through the first flame tube to heat water within the water reservoir and the internal volume; anda second burner positioned to direct flames through the second flame tube to heat water within the water reservoir and the internal volume. 14. The water heater of claim 13 wherein the first flame tube comprises a first heating coil and the second flame tube comprises a second heating coil, and wherein the first heating coil includes a first tube coiled into a first cylinder, and the second heating coil includes a second tube coiled into a second cylinder. 15. The water heater of claim 13, further comprising a vaporizer positioned at least partially within the shell proximate the flames, wherein the vaporizer is configured to at least partially transform liquid fuel to gaseous fuel and direct the at least partially gaseous fuel to the burner. 16. The water heater of claim 13, further comprising: a lid removably coupled to the shell and having a plurality of exhaust vents; anda plurality of diffusers, individual diffusers positioned in corresponding individual exhaust vents, wherein individual diffusers include a plurality of slats positioned to remove moisture from exhaust gases. 17. The water heater of claim 13, further comprising: a lid removably coupled to the shell and having a plurality of exhaust vents;an enclosure removably coupled to the lid and having an interior; andmedia positioned within the interior to capture moisture from exhaust gases. 18. A method for heating water, the method comprising: directing fuel to a vaporizer coil within a shell of a water heater;burning the fuel from the vaporizer coil with a burner to produce a flame and combustion gases;directing the flame through a cylinder formed from a coiled tube;flowing a first volume of water through the coiled tube and heating the first volume of water via the flame;spraying a second volume of water outside of the coiled tube within the shell;heating the second volume of water via the flame and the combustion gases; andcollecting the first volume of water and the second volume of water in a reservoir. 19. The method of claim 17, further comprising: directing exhaust gases through an exhaust vent in a lid of the water heater; andremoving moisture from the exhaust gases with a diffuser. 20. The method of claim 17, further comprising heating the vaporizer coil with the flame to at least partially transform a liquid fuel to a gaseous fuel.
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