In winter, when hunting or fishing, a compact, reliable energy source with high specific heat transfer is an extremely necessary accessory. With its help, you can warm your cold hands by covering yourself with a wide raincoat, warm your whole body by placing it in a tent, raise the temperature in it to positive values, etc.
To make such catalytic heating pad no need for scarce and expensive materials. It is quite possible to make do with improvised materials, which are sold in any plumbing store.
The operating principle of a catalytic heating pad is based on the fact that burning acetone vapor heats a copper wire bent into a spiral, releasing a very large amount of thermal energy, which, in turn, heats the body of this device to 50-70 degrees Celsius.
How to make a catalytic heating pad from readily available materials
Main part catalytic heating pad is a cylindrical tube with metric threads cut on both sides.The cylindrical tube and all other parts can be purchased as a complete set at almost any plumbing store.
Do-it-yourself modification basically consists of drilling small holes in the lid using an ordinary drill to ensure ventilation of the internal cavity of the catalytic heating pad.
Oxidation products escape into the ventilation holes of the lid. At the same time, atmospheric air containing oxygen enters the catalytic heater through the ventilation holes of the lid.
Structurally, this heat-generating device is quite simple. Inside the cylindrical tube there is cotton wool, which is soaked in ordinary technical acetone.
And there is a spiral wound copper wire.
Launch catalytic heating pad is done quite simply. To do this, the copper spiral must be heated for 10-15 seconds using a flame that does not produce soot, for example, using a gas lighter.
Next, the thermal energy is transferred to a metal cylinder, which is heated to a temperature of 50-70 degrees Celsius. Moreover, in the dark there is a beautiful glow.
The upper part of the structure is wrapped with a screw metal plug so that various external factors do not affect the catalytic combustion. After 10-15 minutes, the entire structure warms up and can be used, for example, for fishing in winter or hunting.
One refill of acetone is enough for several hours of uninterrupted operation of our heat-generating device. Therefore, this entire system, simple in design, can be taken with you when going outdoors for relaxation or work in the winter.
