Abstract: An exhaust assembly for use with a gas-fired water heater that includes a hood for receiving exhaust gas from the gas-fired water heater, a housing, and a fan positioned in the housing to move exhaust gas from the hood out of the exhaust outlet. The hood includes a first hood mounting location and a second hood mounting location. The housing includes an exhaust outlet and a housing mounting location. In a first configuration, the exhaust outlet faces a first direction and the housing mounting location is aligned with and secured at the first hood mounting location. In a second configuration, the exhaust outlet faces a second direction different than the first direction and the housing mounting location is aligned with and secured at the second hood mounting location.

Abstract: A compact fuel fired steam generating type humidifier. The apparatus uses a gaseous fuel as the prime source of heat to generate steam used to humidify air in the heating, ventilation and air conditioning of buildings. The humidifier may be a stand alone unit that disperses the steam into the space or the steam generated by the apparatus may be dispersed in forced air flow of the building heating system. The steam generating unit includes a water tank in which there is located a combustion chamber and a heat exchanger chamber for transferring the heat from the products of combustion to the water.

Abstract: High efficiency heat transfer from hot gases produced by combustion of fuel and oxygen in a burner to usably heat is provided in a simple and effective manner. A burner within a water-tight casing is mounted submerged within a pool of condensate within a boiler casing. Hot gases from the burner are passed into direct heat exchange contact with condensate in the pool, and then flow in a turbulent manner into contact with a wet solid material heat exchange surface, such as pieces of limestone mounted on a perforated plate above the pool of liquid. The hot gases give up heat directly to the liquid wetting the heat transfer surface, and then are exhausted out the top of the boiler, passing through a secondary heat exchanger. Condensate is drained from the boiler to prevent excessive buildup. Liquid from the pool is circulated through a primary heat exchanger into heat exchange relationship with a heat exchange fluid, and then reintroduced into the boiler casing above the heat transfer surface (e.g.

Abstract: A boiler for heating a working fluid includes a first module containing the hearth, a burner fed by said fuel gas, and an internal water circuit for wetting the hearth and creating a first level of mass and heat exchange due to vaporization without heat transfer to the working fluid; a second module including an exchanger-condenser associated with the circuit portion for circulating the working fluid and receiving the combustion gases laden with water vapor coming from the hearth of the first module and a third module including a water vapor pump providing a third level of mass and heat exchange between the combustion gases coming from the second module and the oxidizing air injected into the enclosure via an air inlet, with a device for directing the oxidizing air to the first module after it has been heated and wetted by passing through the third module.

Abstract: A direct contact gas-to-liquid method and system for heating a liquid with a burning source being wholly submerged and producing-power is disclosed. A liquid is heated by an internal combustion engine means, which is submerged in a container and can utilize the inherent swelling power from the burning gases in the engine means to draw large air into the engine means to support the burning without any other drift device, and to further drive other devices supplying and heating the liquid in the heating method and the heating system.

Abstract: This invention relates to a novel submerged combustion system. More particularly, this invention relates to a method and apparatus for minimizing turbulence in a submerged combustion system. The submerged combustion system can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and solutions. The invention is directed to a submerged combustion system wherein hot products of combustion are forced through a solution to heat the solution, the hot combustion products being created by burning a fuel with air in the interior of a retaining means, and the hot gaseous products of combustion being exhausted from the interior of the retaining means into the solution, the improvement comprising exhausting the hot gaseous products of combustion through a first port at a predetermined elevation below the level of the solution, the size of the port being predetermined to minimize foam being created at the surface of the solution.

Abstract: This invention is directed to a submerged combustion system comprising: (a) tank means for holding liquid, the tank means having a liquid inlet and a liquid outlet, and an exhaust gas outlet; (b) combustion chamber means positioned in at least a portion of the interior of the tank means; (c) means in the combustion chamber for enabling fuel and air to be introduced into the combustion chamber and being ignited to create a hot gaseous combustion product; (d) port means located in the combustion chamber means for enabling the hot gaseous combustion product to be exhausted from the interior of the combustion chamber into the tank means; (e) means for controlling the level of liquid in the tank means so that the hot gaseous combustion product passes through the liquid and the liquid heated by the hot gaseous combustion product is withdrawn from the tank means, and unheated liquid is introduced into the tank means through the liquid inlet; and (f) cooling liquid means located at the upper region of the combustion

Abstract: This invention relates to a novel submerged combustion system. More particularly, this invention relates to a novel submerged combustion system which can be installed singly or in combination with other similar submerged combustion systems to heat large quantities of liquids and solutions. The invention is directed to a method of regulating hydrostatic pressure in a fluid through which hot gas is being passed, and the fluid is heated by heat from the hot gas, comprising: (a) means for sensing temperature of the hot gas after it is passed through the fluid; (b) means for sensing the temperature of the fluid after it has been heated by the hot gas; (c) computer means programmed for comparing the temperature of the hot gas and the temperature of the hot fluid; (d) means for adjusting the distance the hot gas travels through the hot fluid, said means being regulated by said computer means.

Abstract: For transmitting a fuel heat energy to water or air the heating system performs the steps of producing fuel combustion products in a combustion chamber, sucking the fuel combustion products from the combustion chamber into an ejector and mixing the combustion products in the ejector with an intermediate water to provide an absorption of a combustion heat of the combustion products so as to heat the intermediate water, and supplying the heated water into a means in which the heated water transfers a heat accumulated in the heated water to a cold water from the heating system.

Abstract: The invention relates to a heating boiler in which a combined absorption and heat conveyor fluid (22) is heated by the direct contact with the exhaust combustion gas (20) of a fuel. This fluid (22) at the same time cleans the exhaust gas, provides a heat shield between the combustion chamber (4) and the container (1) of the boiler and extracts the heat of condensation of the fuel. In such an arrangement of the boiler it is possible to make the container (1) of the heat conveyor fluid (22) economically of synthetic material while obtaining great efficiency and environmental acceptability.

Abstract: A gas fired direct contact water heater in which the heated water is led off from a reservoir in a lower part of the heater through an outlet conduit including a continuously running pump pumping the heated water along the conduit to a user's valve which is opened when the user requires heated water. To replace that water a water supply conduit controlled by a ball-cock valve conveys water to a first spray bar in an upper part of the heater above heat transfer means through which passes the downward flowing water and upward flowing products of combustion resultant from the burning fuel gas. A return conduit opens into the outlet conduit between the user's valve and the pump. The return conduit leads to a second spray bar in the heater above the heat transfer means.