Industrial chillers: description, application, device and types
Industrial chillers are refrigeration units for central air conditioning systems. They are used in the chemical, food and other industries. The units are effective when it is necessary to change the temperature of the coolant, which is transmitted to the consumer.
Industrial chillers can often be found in the relevant field, but such installations are also suitable for air conditioning in:
- shopping complexes;
- residential buildings;
If you combine them with fan coilers, the equipment will perfectly fulfill the role of a central air conditioner. Thermal energy in such units moves with the help of water. To prevent it from freezing, antifreeze mixture is used. Traditional air conditioners in their work use freon, which cools the air. But chillers work thanks to the evaporator, condenser and compressor, which are part of.
Refrigerant and water flows through the evaporator.The first absorbs the thermal energy of water, and then goes into the boiling stage. It turns into gas, and the water is cooled. The vaporous refrigerant is in the compressor, where it is heated and mixed with oil under the influence of compression forces. This composition moves to the condenser and gives off thermal energy, turning into a liquid.
Industrial chillers use refrigerant in operation, which in the next stage enters the filter dryer. There he is freed from excess moisture. This substance is in a liquid state when its pressure decreases. This facilitates the movement of the mixture through a thermal expansion valve. Here the refrigerant goes to the vapor state and enters the evaporator, where the cycle repeats again.
The compressor is used by an industrial chiller to compress and move refrigerant. It passes through the condenser and the evaporator, heats up and cools the water. The condenser performs the function of a heat exchanger, through which thermal energy is transferred to the environment.
Chillers are presented in several forms. They differ in the principle of action.Among them are the following types:
- vapor compression;
- unit with remote condenser;
- device with air cooling units;
- device with water cooling.
With the help of reversible equipment you can heat and cool the coolant. The vapor compression industrial chiller removes heat using the principle of refrigerant circulation. Water vapor, which changes the state of aggregation, is used by the absorption unit. Heat in the process is given to the high-pressure chamber. With the help of lithium bromide, heat is taken from the chamber. This substance acts as an absorbent.
If the unit provides for the presence of a fan and a chiller, then the mechanism works on the principle of an air cooling unit. The double-circuit mechanism is if it has water-cooled condensers. Antifreeze in this case circulates in the circulating system.
Industrial chillers for cooling are composed of a compressor, which serves as the basis. This unit is designed to compress the refrigerant. In the refrigeration unit may be several compressors, they are divided into:
The compressor is a refrigeration unit. Coolant vapor cooling is provided by a condenser. It is here that the substance changes to a liquid state. The load is monitored by the control unit. It includes the right number of compressors and capacity steps. This part of the industrial water chiller controls the automation. Filling the evaporator with a refrigerant is provided by a thermostatic valve. Heat transfer occurs in the evaporator. It is transferred from the cooling facility to the refrigerant.
Additional design elements
Anti-vibration supports are responsible for reducing vibration transmission. They help reduce noise. To reduce its level, a protective cover is also used. It allows installations to be placed in engine rooms and public places.
In advance to draw up a plan of preventive work helps counter hours of hours. The reliability of the equipment is enhanced by sets of protective automation. They help prevent emergencies that may arise in the compressor.
Areas of use
Industrial chillers for cooling water have a wide power range. They have excellent technical capabilities. This allows the use of such installations in commercial premises, residential apartments, as well as in production. With the help of devices, it is possible to cool drinks and water in the food industry, and in the pharmaceutical industry, equipment contributes to the long-term storage of medicines. Apply such installations in the sports and fitness field. They can be used to cool ice rinks and skating rinks.
Basic malfunctions and recommendations for their elimination
During operation, the chiller may experience problems. You can handle them yourself. For example, if you notice that when the switch is turned on, the green lamp does not light up, this may indicate that there is no network cable connection. Sometimes a broken lamp indicates a similar problem. First you need to check the mains voltage and reliability of the connections. If this does not work, then the lamp changes.
Repair of industrial chillers may be necessary if the compressor does not start and no noise is heard during operation.This is often indicated by a blown fuse or faulty wiring. The thermostat can also fail or stick. Sometimes it turns off due to low temperature. To solve the problem, you need to replace the fuse and turn on the switch. It will be necessary to check the wiring and replace the thermostat.
If the compressor does not start when the equipment is started, noise is present, and the thermal relay is functioning, then the cause of the malfunction may be low voltage or weakening of the contacts. The winding may be damaged, and the voltage on the phases sometimes warps. After installing the cause of the fault, you can tighten the contacts and replace the compressor.
Chillers - industrial equipment, which is a refrigeration machine. Installation of such devices is carried out in a mandatory manner in the field of mechanical engineering, at metalworking enterprises, as well as in the conditions of food production.
Where air conditioning systems work, chillers are indispensable. They are a subtype of climate equipment and are rather cumbersome.The cooler consists of three parts: the evaporator, compressor and condenser.