Gas turbine cogeneration apparatus for the production of domestic heat and power
First Claim
1. An apparatus for the domestic production of electricity, comprising:
- a normal air intake for supplying atmospheric air as combustion air,a heat exchanger in which combustion air is preheated;
means for supplying non-pressurized fuel,a combustion chamber in which the non-pressurized fuel is burned in the preheated combustion air at a pressure no greater than atmospheric pressure to form gaseous combustion gases;
a centrifugal compressor;
an electrical generator;
at least one radial turbine in which the gaseous combustion gases are expanded and do work, the at least one turbine being connected to drive the compressor and said electrical generator;
means for starting the apparatus including an electric air blower and a valve which automatically closes the normal air intake during start up, for drawing air from the atmosphere and delivering it through the heat exchanger and combustion chamber to the turbine inlet; and
means for passing the gaseous combustion gases from said at least one turbine through said heat exchanger to preheat the combustion air and then to said compressor for recompression.
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Accused Products
Abstract
An apparatus for the domestic cogeneration of heat and electrical energy utilizing an inverted Brayton cycle gas turbine, a combustion chamber, an electrical generator and a compressor. Combustion air is preheated in a heat exchanger by gaseous combustion gases or exhaust gases exiting from the turbine. The combustion air is supplied at substantially atmospheric pressure to the combustion chamber where fuel is burned. The cooled gaseous combustion gases exiting from the heat exchanger are then fed to the compressor where they are recompressed to atmospheric pressure, and are finally used to heat the working fluid of a domestic heating system before being exhausted to the atmosphere. The apparatus can also include an acoustically and thermally insulated housing, an electric air blower for start-up, an engine ignition device, a frequency converter which conditions the electric generator output for connection to the main supply and a control system which is cooled by the engine intake air and which detects thermal and electrical demand and adjusts the engine power accordingly.
37 Citations
13 Claims
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1. An apparatus for the domestic production of electricity, comprising:
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a normal air intake for supplying atmospheric air as combustion air, a heat exchanger in which combustion air is preheated; means for supplying non-pressurized fuel, a combustion chamber in which the non-pressurized fuel is burned in the preheated combustion air at a pressure no greater than atmospheric pressure to form gaseous combustion gases; a centrifugal compressor; an electrical generator; at least one radial turbine in which the gaseous combustion gases are expanded and do work, the at least one turbine being connected to drive the compressor and said electrical generator; means for starting the apparatus including an electric air blower and a valve which automatically closes the normal air intake during start up, for drawing air from the atmosphere and delivering it through the heat exchanger and combustion chamber to the turbine inlet; and means for passing the gaseous combustion gases from said at least one turbine through said heat exchanger to preheat the combustion air and then to said compressor for recompression. - View Dependent Claims (2, 3, 4, 5, 6, 9)
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7. An apparatus for the domestic cogeneration of heat and electricity, comprising:
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a normal air intake for supplying atmospheric air as combustion air, a heat exchanger in which the combustion air is preheated; means for supplying non-pressurized fuel, a combustion chamber in which the non-pressurized fuel is burned in the preheated combustion air at a pressure no greater than atmospheric pressure to form gaseous combustion gases; a centrifugal compressor; an electrical generator; at least one radial turbine in which the gaseous combustion gases are expanded and do work, the at least one turbine being connected to drive the compressor and said electrical generator; means for starting the apparatus including an electric air blower for drawing air from the atmosphere and delivering it through the heat exchanger and combustion chamber to the turbine inlet air via a valve which automatically closes the normal air intake during start-up; means for passing the low density gaseous combustion gases from said at least one turbine through said heat exchanger to preheat the combustion air and then to said compressor for recompression; and means for extracting residual heat from the recompressed gaseous combustion gases. - View Dependent Claims (8, 10, 11, 12, 13)
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Specification