People living in cold climate would appreciate Air Conditioned Suite, which heats external air for breathing and warming the body; in hot climate, they would appreciate one, which cools external air.
We need two systems of air management: one for breathing and another for comfort of the skin.
Inhaled air should be filtered, heated or cooled, as needed, its humidity should be adjusted and health improving substances should be added. Exhaled air should be removed from vicinity of the face, and heat, which it has, should be reused.
Generally, inhaled and exhaled air should be at atmospheric pressure, however, when a user has some breathing problems, it is advisable to supply air for inhalation under somewhat elevated pressure.
The part of the Air Management System supporting breathing should have two tubes, one to supply conditioned fresh air – inhaling tube, and another for removal of exhaled air – exhaling tube. Outside the vicinity of the head, these tubes should be combined: inhaling tube inside and exhaled air moving on the periphery of combined tube.
It has to include a Breathing Mask, covering the nose and the mouth. The Breathing Mask should have a valve, controlled by changes in air pressure caused by breathing. When air pressure rises, air goes out through the exhaling tube, and when it drops, the air goes in through the inhaling tube. The Breathing Mask has to be comfortable and does not need to be tight.
Air supplied for comfort of the skin, should be conditioned: its temperature and humidity should be adjusted and health improving substances should be added. It should be pumped at slow speed, at pressure slightly higher than atmospheric. Air should be supplied to various points on the body through flexible plastic tubes with holes in them. It should seep out through the clothes taking with it vapor and sweat.
To provide air for the skin, flexible plastic tubes with holes in them should branch in a few “trees” starting from a “source” tube. Attention should be paid to keeping hands and feet at proper temperature. These parts of the body should have good supply of air.
In some places, these tubes could be placed close to each other, in other places they cannot be placed at all, as palms of hands and soles of feet. To provide such carefully organized placement, they have to be “woven” into Special Underwear. This underwear should be worn above thin traditional underwear.
The Suite for Cold Weather should look as traditional clothes used for cold weather. Traditional clothes are cleverly designed to prevent escape of worm air trapped in them and to accommodate transition of vapor into water, and water into ice in the materials of clothes. Also, insulation, reducing radiation of heat trapped under clothes, is designed cleverly.
This Suit should have two parts: a “winter hat”, which covers cheeks and the neck, and “body coverings”, like coat, pants, gloves, boots, etc.
Special Underwear (with embedded air supply tubes) should have corresponding two parts. Each part should have own air supply tube and these tubes should go through corresponding clothes – one through the “winter hat” and another through “body coverings”.
Combined tube for breathing support should go through the “winter hat”.
A transparent face shield should be added to the “winter hat” (use of Breathing Mask prevents collection of condensate on such shield).
Escape of warm air from “looking up openings” in gloves and boots should be minimized. Gloves should be flexibly connected to the sleeves and boots should be flexibly connected to the pants.
The Suit for Hot Weather should be made similar to the Suit for Cold Weather, using different materials, though. To prevent escape of cold air from it, the “hat” needs to be flexibly connected to the “coat”, and the “coat” needs to be flexibly connected to “pants”.
Intake of air for the Suit – for breathing, skin, and machinery, should be made in the top of the “winter hat” of the Suit, with opening facing forward. This way, smell coming with the air could be associated with the direction, where a person is looking. The intake tube should go back on the top of the “winter hat” and reach machinery from there.
Air exhaust - exhaled air and exhaust of machinery, should be made to the back and upward, to minimize its interference with air intake.
Two sound collectors shaped similar to the way human ears are shaped, should be placed outside of the “winter hat” in places corresponding hat wearer’s ears. They have to have microphones in them. Inside the “winter hat”, opposite these microphones, should be micro speakers, each connected to corresponding microphone. The system should run on small batteries.
A few devices are needed to support operations of the Suit: compressors, air heaters, air chillers, air tanks and, possibly, fuel tanks, etc. They all should be small and slow, still the wearer’s body has to be insulated from them. They should be in a Backpack, made with strong, fireproof and lightweight plastics. The side of the Backpack touching wearer’s back should be heat insulated.
Two tubes, one of which is “combined”, connect this Backpack to the “winter hat” and one tube connects it to the rest of the Suit. These tubes should be easy to connect and disconnect, hence, they have to have special connectors.
Controls of its Devices could be collected on the belt, and then a cable should run from corresponding Control Panel to this Backpack.
Different sets of Devices could be placed in such Backpack. Some Devices should be in any variant of it:
· an air compressor supplying air for the skin (pushing air into the Suit through two tubes);
· air compressor supplying air for breathing at elevated pressure (note, if such functionality is offered, a special air tank exists to assure smooth air flow);
· either an air heater and humidifier for Cold Weather Suite, or an air cooler and water drainer for Hot Weather Suit;
· energy supply (an internal combustion engine, or an electric battery);
· power transmission (either from the engine, or from the battery);
· heat exchange systems (to heat or chill supplied air);
· filtering system of incoming air;
· two conditioning systems of incoming air, one for breathing air and another for the air designated for skin.
It seems that such Suit should be already in use in places Far North, where profitable economic activity goes on, but working conditions are difficult, because of harsh weather. The problem is with Energy Supply of such Suit.
In case of electric battery, usually, there is no infrastructure to refill it, while it is dangerous to carry high capacity battery.
In case of internal combustion engine, the engine is hot, noisy and dirty.
However, the Suit needs to produce only very small excess of pressure and needs to heat only small amount of air per hour and it possible to make it economical in many important cases.
Electric battery could be used in places, where the infrastructure to refill batteries exists or could be set economically. Reciprocating Pumps driven by a linear electric motor could be used as compressors (see “Reciprocating Pumps” on this site). Well insulated electric heaters could be used to heat up external air.
From the other hand, a special internal combustion engine exists, which fits requirements of this application (see “Pumping Engine” on this site). Such engine would pump fluid of hydraulic transmission and in turn Reciprocating Pumps, driven by this fluid, would be used as a compressor.
This engine has to be cooled, and heat removed by the cooling system should be used to warm the air supply of the Suit. There is no need for a special heater in such setup. Fuel in this engine could be burned as slowly as needed, hence it is ideally suited to be used as a heater, while it drives the compressor. Parameters of this engine should be selected to play optimally these two roles of the engine: driver of the compressor and heater.
The Suit for Hot Weather needs means of chilling external air and disposal of produced water condensate.
In this application, an air compressor should be used to chill the air through well known steps: compress air in a tank, remove heat using fast flow of external air, and release air into the system at almost atmospheric pressure (drop of pressure should chill the air). Water condensate should be removed on the way and collected for eventual disposal.
The Suit could be used in variety of applications, with relatively small modifications.
With improved filtering of taken in air, it could be used in dusty industrial conditions, or during dust storms.
With medically set levels of air pressure and medication added to the inhaled air, it could be used in treatment of breathing and lung problems.
With oxygen tank added to the Backpack, oxygen could be added to air designated for inhalation, in volumes proportional to volumes of inhaled air.
Alexander Liss 6/11/2020