Hi:
I=92m thinking of hypothetical oxyhydrogen-fired radiant heater in which the significant emitter of thermal radiation is the flame itself.
In terms of oxidant/fuel ratio, the flame is lean =96 more oxygen than hydrogen. Oxygen [O2] is the only oxidant to burn the fuel.
Each and every molecule of the hydrogen is fully-oxidized by the oxygen. There is also an additional oxygen pumped in with the oxyhydrogen mixture to ensure that there all hydrogen molecules are completely burned into water molecules. This is so that there is no unburned hydrogen to any extent.
There are 6 sides to this radiant heater. Left, right, back, front, up, and down. The height of the left, right, front and back are the same. The top and bottom are shorter in length than the heights of the aforementioned. However, the top and bottom are of the same width as the widths of the left and right. The front of the heater is what faces the object intended to be heated. The front consists of eco- friendly material that is completely transparent to all EM radiation from 100,000 nm to 300 nm. The interior of the back of the heater consists of eco-friendly material that completely reflects all wavelengths of EM radiation from 100,000 nm to 300 nm. The interiors of the left and right of the panel also consist of eco-friendly material that totally reflects wavelengths of EM radiations from
100,000 nm to 300 nm. The bottom of the panel is where the flame is emitted. The length of the flame is almost as long as the bottom of the panel. The top of the panel is where hot gases from the combustion escape =96 this is the exhaust and is as long as the flame. The material on the front of this heater has a low-enough heat conduction coefficient that it remains perceptibly cool even though it allows thermal radiation to escape outward.There are three pipes attaches to the bottom of this heater. One carries the hydrogen, while the other two carry oxygen.
This infrared heater is air-tight prior to combustion. Also, prior to combustion, the only gas present in the heater is additional amount of oxygen. There is a sufficient amount of oxygen [but not more] such that the air pressure inside the heater equates to the air pressure outside the heater =96 this is to prevent any damage to the heating panel caused by pressure differences. Just before ignition of the fuel, the correct amount of oxygen is removed such that the high- temperature of the flame does not raise the internal air pressure to the point of damage. Also, the ignition is smooth and completely non- explosive. Just prior to the ignition, an adequate amount of hydrogen and oxygen are discharged into the heater in the slow, smooth, continuous manner. Now, when the amount of the oxyhydrogen mixture is enough for ignition and self-sustaining combustion, an electric spark is discharged which causes the fuel to catch fire. The amount of flame is adjustable in terms of height and width =96 however the length is constant. At the lowest setting there is just enough flame for the IR radiation to be perceptible as warmth. At the highest setting the flame nearly fills up the entire heating panel.
I=92m thinking of two applications for this radiant heater:
- Use mild versions of the heater in cold parts of the world in outdoor public places to keep citizens warm =96 such as the roof-tops dining locations of restaurants in Northern Europe, where the climate is often cold and wet.
- More intense versions of this heater can be used to cook food "medium rare". Think charred pork that=92s bloody red on the inside.
Thanks,
Green Xenon