摘要:
A combustion system for generating heat and power is presented. The combustion system comprises a combustion chamber having a combustion source 2, and a Thermo Electrical Unit having a high temperature region and a low temperature region. The Thermo Electrical Unit comprises a first heat element 12, 112 being arranged in the combustion chamber such that in use heat emitted from the combustion source 2 is absorbed by the heat element 12, 112 and transmitted to the high temperature region whereby power is generated by the Thermo Electrical Unit.
摘要:
A multilayer radiant burner which has exceptionally low NO X emissions can be operated over a broad turndown range. The burner is a three-dimensional matrix of spaced apart emissive layers. It comprises a burner tray (1), seal frames (3) made from alumina felt, a supportive layer of perforated metal (4), a porous distributive layer of twilled weave Kanthal wire (5), a steel frame (6), and an emitter (8) made of Kanthal AF, based on four ceramic legs (7). A quartz tube (9) is installed on the top of the burner for separation of the ambient air from waste gases. Such high intensity burners, e.g. 1,500,000 BTU/h·ft 2 , may be used in water heaters or boilers or in a thermophotovoltaic apparatus which produces both electric energy and heated water.
摘要:
An energy conversion and transparent transfer media (10) comprising a transparent core (8) for energy transfer, preferably an optical fiber and/or a glass rod, and a selective emitter material configured for emitting predominantly nearinfrared radiation when heated up to high temperatures, wherein the transparent core (8) is doped with said selective emitter material and/or the energy conversion and transfer media (10) comprises a, in particular tubular, radiation emitter (1) doped with said selective emitter material, wherein the transparent core (8) is arranged within said radiation emitter (1) and/or between at least two separate parts of said radiation emitter (1).
摘要:
Combustion, heat-exchange and emitter device (10) for converting chemical into electro-magnetic radiation and method for providing such, the device (10) comprising : a radiation emission section (A) with a selective emitter (1.3) configured for emitting predominantly near-infrared radiation when heated up to high temperatures; a conversion section (B) arranged adjacent to said radiation emission section (A) and comprising a catalytic coating in order to provide for surface specific fuel combustion to maximize heat transfer between a thermal energy carrier (fuel) and the radiation emission section (A); a heat recovery section (F) configured such as to transfer excess heat of the thermal energy carrier from an exhaust outlet section (G) to an inlet section (E) such as to pre-heat the thermal energy carrier (fuel) entering the device (10) therethrough.
摘要:
A multilayer structure (10) for thermophotovoltaic devices, comprising a heat transfer-emitter unit (2) and a spectral shaper (3). The heat transfer-emitter unit (2) comprising a chamber enclosure (2.1) made of a high temperature resistant material, defining a flow-through heat transfer chamber (2.2); an electro-magnetic radiation emitter (2.3) configured for emitting predominantly near-infrared radiation when exposed to high temperatures. The spectral shaper (3) is arranged adjacent to and thermally connected with said electro-magnetic radiation emitter (2.3), wherein the spectral shaper (3) is configured as a band pass filter for an optimal spectral band of the radiation and as a reflector for further, non-optimal spectral band(s) of the radiation, so that said second, non-optimal spectral band radiation is recycled as radiation redirected towards the electro-magnetic radiation emitter (2.3).
摘要:
An energy conversion and transparent transfer media (10) comprising a transparent core (8) for energy transfer, preferably an optical fiber and/or a glass rod, and a selective emitter material configured for emitting predominantly nearinfrared radiation when heated up to high temperatures, wherein the transparent core (8) is doped with said selective emitter material and/or the energy conversion and transfer media (10) comprises a, in particular tubular, radiation emitter (1) doped with said selective emitter material, wherein the transparent core (8) is arranged within said radiation emitter (1) and/or between at least two separate parts of said radiation emitter (1).
摘要:
The invention relates to a thermophotovoltaic system comprising an infrared radiation emitter (2), said emitter comprising a body provided with a first outer surface (8) and a second outer surface (10), said first (8) and second (10) outer surfaces being separate, the first outer surface (8) being opposite a concentrator (17) in order to receive concentrated solar radiation, the second surface (10) being opposite a thermophotovoltaic cell (4), and the body comprising at least one gas and/or liquid combustion chamber therein, an igniter (24) being provided for initiating combustion in the combustion chamber (12).
摘要:
A radiant burner screen (8) comprises a substrate formed by a heat resistant, porous, rigid, ceramic foam material having a thin tracery or reticular form demarcating the pores which open one into another and of which there are about 30 pores or less per 645.16 square millimetres. This ceramic foam material can be readily and easily permeated by hot gaseous products of combustion from a fluid fuel, for example natural gas, burner (4). The ceramic foam material which may be a silicate of alumina with preferably no free silica, bears a sprayed on radiation emitter coating at side (14) of the screen (8). The emitter coating comprises a rare earth element and/or a compound of a rare earth. The rare earth may be ytterbium or erbium and the compound may be ytterbia or erbia. Heat from the hot products of combustion causes the emitter coating to emit radiation incident on a photovoltaic cell arrangement (10) to produce electrical power therein output on line (12).
摘要:
A multilayer radiant burner which has exceptionally low NO X emissions can be operated over a broad turndown range. The burner is a three-dimensional matrix of spaced apart emissive layers. It comprises a burner tray (1), seal frames (3) made from alumina felt, a supportive layer of perforated metal (4), a porous distributive layer of twilled weave Kanthal wire (5), a steel frame (6), and an emitter (8) made of Kanthal AF, based on four ceramic legs (7). A quartz tube (9) is installed on the top of the burner for separation of the ambient air from waste gases. Such high intensity burners, e.g. 1,500,000 BTU/h·ft 2 , may be used in water heaters or boilers or in a thermophotovoltaic apparatus which produces both electric energy and heated water.