Can you retrofit fresh air with air conditioning holes?

Can you retrofit fresh air with air conditioner holes.

Air conditioning is air conditioner (Air Conditioner). It is a device that regulates and controls the temperature, humidity, flow rate and other parameters of the ambient air in a building or structure by artificial means.

Generally includes cold source/heat source equipment, hot and cold media transmission and distribution systems, end devices and other auxiliary equipment. Mainly includes, refrigeration host, pumps, fans and piping systems. The end device is responsible for the use of cold and heat from the transmission and distribution, specific treatment of the air state, so that the target environment of the air parameters to meet certain requirements.

Air conditioning is an indispensable part of modern life, air conditioning provides people with cool, but at the same time, air conditioning is also easy to cause disease, such as "air conditioning disease", need to be used with caution.

The first air conditioners and refrigerators used ammonia, chloromethane and other toxic gases. Leakage of such gases can cause major accidents. Thomas Miceli invented chlorofluorocarbon gas (chlorofluorocarbon gas) in 1928 and named it Freon. This refrigerant is much safer for humans, but is harmful to the atmospheric ozone layer.? Freon is the trademark for DuPont's CFC, HCFC, or HFC refrigerants, each of which also includes a number in its name to indicate the molecular composition of its ingredients.

Of these, R-22 HCFC refrigerant, which is the most widely used in direct evaporative moderate cooling products, will be discontinued for use in newly manufactured equipment starting in 2010, and discontinued completely in 2020.R-11 and R-12 have been discontinued in the United States. As an alternative, a number of ozone-friendly refrigerants have been introduced, including the refrigerant R-410A under the trade name "Puron". R290 and R32 are new environmentally friendly refrigerants that are gradually being introduced to the market, with R290 containing only carbon and hydrogen in the molecule, no chlorine and no fluorine, and with zero ozone depletion potential (ODP). Zero.