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A power generating system and method operating at high pressure and utilizing a working fluid consisting of a mixture of compressed non-flammable air components, fuel combustion products and steam. The working fluid is substantially free of CO and NOx. Fuel and compressed air at an elevated temperat

A power generating system and method operating at high pressure and utilizing a working fluid consisting of a mixture of compressed non-flammable air components, fuel combustion products and steam. The working fluid is substantially free of CO and NOx. Fuel and compressed air at an elevated temperature and at a constant pressure are delivered to a combustion chamber, the amount of air being chosen so that at least about 90% of the oxygen in the air is consumed during combustion. The quantity of air and fuel supplied to the combustion chamber may be varied provided a constant fuel to air ratio is maintained. Superheated water is delivered under pressure to the combustion chamber, and is converted substantially instantaneously to steam. The quantity of water delivered is controlled such that the latent heat of vaporization of the water maintains the temperature of the working fluid at a desired level. Heat may be transferred from the working fluid exiting the work engine to the water to heat the water to the desired temperature for delivery to the combustion chamber. The quantity, temperature and pressure of the air, fuel and water introduced in to the combustion chamber are independently controllable. A zoned burner may be employed in which a portion of the compressed air may be mixed with the fuel in a first zone prior to ignition, with the remaining compressed air being added at one or more locations downstream of the point of ignition.

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A power generating system and method operating at high pressure and utilizing a working fluid consisting of a mixture of compressed non-flammable air components, fuel combustion products and steam. The working fluid is substantially free of CO and NOx. Fuel and compressed air at an elevated temperat

A power generating system and method operating at high pressure and utilizing a working fluid consisting of a mixture of compressed non-flammable air components, fuel combustion products and steam. The working fluid is substantially free of CO and NOx. Fuel and compressed air at an elevated temperature and at a constant pressure are delivered to a combustion chamber, the amount of air being chosen so that at least about 90% of the oxygen in the air is consumed during combustion. The quantity of air and fuel supplied to the combustion chamber may be varied provided a constant fuel to air ratio is maintained. Superheated water is delivered under pressure to the combustion chamber, and is converted substantially instantaneously to steam. The quantity of water delivered is controlled such that the latent heat of vaporization of the water maintains the temperature of the working fluid at a desired level. Heat may be transferred from the working fluid exiting the work engine to the water to heat the water to the desired temperature for delivery to the combustion chamber. The quantity, temperature and pressure of the air, fuel and water introduced in to the combustion chamber are independently controllable. A zoned burner may be employed in which a portion of the compressed air may be mixed with the fuel in a first zone prior to ignition, with the remaining compressed air being added at one or more locations downstream of the point of ignition. of the material, wherein the impingement distance between the upstream wall and the plane is greater than the impingement distance between the downstream wall and the plane such that at least a portion of the fluid is delivered through the nozzle to a predetermined portion of the material in a direction that is counter to the machine direction; d) an upstream collection device which is disposed upstream relative to the nozzle; and e) a downstream collection device that is disposed downstream relative to the nozzle, wherein the downstream collection device has a radius ranging from 20% to 100% of the impingement distance between the upstream wall and the plane. 9. A heat transfer apparatus comprising: a) a support element designed to receive a material thereon, the material having a surface oriented away from the support element and moving in a machine direction; b) at least one fluid supply designed to produce and discharge a fluid; c) at least one nozzle having an open area formed by an upstream wall and a downstream wall relative to the machine direction, the upstream wall and the downstream wall separated by an opening distance, the nozzle connected to the fluid supply and disposed generally adjacent to the support element and spaced apart therefrom so as to form an impingement distance between each wall of the nozzle and a plane generally corresponding to the surface of the material, wherein the impingement distance between the upstream wall and the plane is greater than the impingement distance between the downstream wall and the plane such that at least a portion of the fluid is delivered through the nozzle to a predetermined portion of the material in a direction that is counter to the machine direction; wherein the fluid supply includes a diffuser having baffles to distribute the fluid in a cross-machine direction. 10. A heat transfer apparatus comprising: a) a support element designed to receive a material thereon, the material having a surface oriented away from the support element and