In climate systems, other types of equipment are often used as an alternative to air conditioners: chillers and fan coil units. A chiller is a special high-performance unit designed to cool a liquid heat carrier (water, aqueous alcohol and salt solutions, non-freezing liquids — ethylene glycol or propylene glycol).
In fact, this is the same outdoor unit of the air conditioner, but with much more features and benefits. In terms of installation costs, such a device is more profitable, because. for communications, ordinary water pipes are used, there are no restrictions on the length of pipelines and the number of connected consumers.
The system using this equipment makes it possible to achieve high cooling capacity (from 40 kW to 1000 kW and more). And if a conventional air conditioner cannot cool to a temperature that will be much lower than the street temperature, then such systems can create sub-zero temperatures even at 50 degrees heat.
Chillers in air conditioning
Main scope of chillers — air conditioning. Such equipment is quite expensive and difficult to install. Therefore, it is often used to create a microclimate in large buildings or public and industrial premises.
The equipment can be installed at a considerable distance from air-conditioned rooms, and duct fan coil units, cassette, floor-to-ceiling or other types of heat exchangers are used to supply the cooled coolant. The most effective is the installation of a chiller with a heat pump function, which allows you to cool the air in all rooms in summer and heat the building in winter. The only drawback of such a system is the lack of fresh air admixture. But this is easy to fix if you install duct or roof fans with recuperators.
Today, air and water cooling and heating systems based on chillers are successfully used in administrative, office and shopping centers, multi-storey residential buildings, hotels, schools, elite complexes, and sports facilities. They are widely used for cooling water in pools and special solutions for preserving ice on skating rinks.
Chillers in industry
The use of powerful cooling systems is most in demand in industry, because. allows you to significantly save on electricity and equipment, and is much cheaper than multi-split systems.
Chillers successfully used in many industries:
- mechanical engineering and metalworking (for the production of plastic and rubber products and equipment cooling);
- chemical industry (for cooling reactors, reservoirs, tanks, galvanic baths, as well as for the production of cosmetics and household chemicals and cosmetics);
- production of packaging plastic containers (blowing bottles for water and drinks, cooling crushers, mixers, automatic machines);
- for refrigerators and freezers, low-temperature chillers are often used, which allow reaching up to — 30? C;
- obtaining ice water necessary for technological processes (in the meat processing industry for cooling meat in a wet way, for the production of carbonated drinks, beer, wine, cognac);
- food industry (when freezing and producing products, providing conditions for storing vegetables and fruits, at dairy plants and confectionery factories);
- computer centers, server and telephone exchanges (creation of optimal conditions for the operation of expensive equipment).
The compactness and simplicity of such equipment makes it possible to rationally use the usable area, dispense with bulky heat exchangers, a large number of condensers and outdoor units, and improve the environmental situation by eliminating freon lines.