There are a number of ways to condition air as per your comfort in terms of temperature, pressure, humidity, and purity of the air you live in.
To achieve this objective, extra energy is required.
To keep their homes cool and comfortable, some animals derive this energy from Nature itself. They have been doing this since the beginning of this creation; they did not go to any school nor did they undergo any course in air conditioning. They had to do this to survive. Humans have also started to adapt this today.
While some people use natural methods for air conditioning, some use artificial methods. While some people detest spending any money for buying comfort, some people agree to put money for the comfort they get in return.
The artificial methods generally comprise of use of electricity driven man made machines which bring along cost of production, installation, maintenance and operation. By virtue of being a machine, it has its own limitations. Wear and tear, limited capacity, maintenance issues, to name a few.
The said orthodox machine works on a common vapour cycle system using a refrigerant. Eg., ammonia, freon, or others. Alternate cycles of compressing and expanding the refrigerant give the desired cooling. Here extra energy from outside is needed. Here half the input energy goes waste.
The same or somewhat better result can be obtained using natural means. Here no external input energy (electricity) is needed. Its a self contained system. Solar, wind, hydel and geothermal forms of energy come handy. Depending upon the resources available at the site, an optimum system is to be designed. With capacity not being a constraint, being environment friendly and having sufficient potential to be scaled up, the system gains a more favored status.
Cost of operations, thus, disappear in natural methods.
The natural method requires a set up to fulfill the purpose. The installation, lay out, pipe lines and other items become part of the building or the space to be air-conditioned. The underlying principles of its working are: differential temperatures create differential pressures which actually facilitate the air flow. Geothermal sinks absorb infinite amount of heat. Differences in source and sink temperatures have the capability to produce mechanical work - well within the realm of the 2nd law of thermodynamics. It is up to Man to understand, interpret and apply this naturally available feature to fulfill his own needs.
This does not consume electricity. Rather it has spare capacity. You may produce electricity, if you please.
Even when the outside temperature is above 40 deg C, the inside remains a cool 23 deg C. It becomes a matter of throwing out warm stale air and allowing fresh ambient air inside after passing it through a network of geothermal coolers.
