The air cooler is installed in re - circulation ventilation systems of the leak - tight shells of reactors of atomic power plants with UVER-1000 water - water power reactors. The air cooler is a plate rib heat exchanger. It consists of 2 modules that are joined by flange connectors. Each module is a soldered package consisting of alternating plane - oval pipes and corrugated spacers. The plane - oval pipes serve to form a hydraulic passage and the corrugated spacers serve to form a gas passage and are made split with displaced ribs. The structure is made of corrosion - resistant steels. The modules are made by method of soldering a package in a vacuum furnace with high - temperature solder according to the technology tried - out for space rocket hardware:

- use of most up - to - date rocket technologies in the development and manufacture of air cooler;
- the material of heat exchangers is stainless steel which increases the service life up to 20-25 years;
- repair of the air cooler is possible (cleaning of internal surfaces by chemical method, etc);
- interchangeability with the air coolers used at atomic power plants;
- simple in operation;
- high reliability;
- guaranteed service life is 20-25 years.

Main Characteristics of the Developed Air Cooler of Ventilation systems for Atomic Power Plants.

Heat transfer of air cooler in the conditions of operation of anatomic power plant, km - up to 3002.
Operating pressure in liquid passage, MPa - up to 0.53.
Operating pressure in air passage, MPa - up to 0.01034.
Area of air heat exchange, m2 - 1205.
Service life, years - 20-25.
Material of structure - stainless steel.

This air cooler is planned to be used for the systems of leak -tight shells of atomic power plants withUVER-1000 reactors.It can also be used in the other branches of industry, for example, chemical.