Nowadays in many spheres of human activity is used refrigeration equipment under the name of the unit.What it is?Answers to these and many other questions are in this article.
chiller - what is it
This special equipment which is used for cooling liquids.An important feature of the unit - cooling capacity, ie the ability to take away the heat that allocates cooling medium.Therefore, before using such a machine, you need to carry out detailed calculations influx of heat in the room in different conditions.
chillers are used in many sectors of the economy: in mechanical engineering, metalworking industry, food industry, medicine, and so on. D. Also, refrigerating machine is widely used in modern air conditioning systems.Conditioners made on the basis of the unit, allow a large number of central air-conditioning facilities.
ability to maintain the temperature required for the smooth operation of the equipment, made indispensable to many industries such equipment as chiller.What is it and what is its value?Answers to these questions lie in the application.
Applications
Most chiller used for air conditioning.But there are other areas in which the unit is used:
- cool drinks in food production.Thus, according to the technological features, wine, brandy, syrups, juices, beer requires lowering the temperature.
- cooling process and drinking water in the confectionery and bakery equipment.
- maintain the water temperature in the pools.
- Create ice platforms in the sports and entertainment complexes.
- cooling production of medical equipment.
- pharmaceutical service needs.
- laser technology.
- Manufacture of rubber and plastics.
- Chemical Industry.
The principle of
main task machines - compress the refrigerant vapor, thereby increasing the pressure to the dew point.This principle is based circuit chiller.Thus, under the influence of fluid pressure begins to evaporate.Then parozhidkaya mixture enters the condenser, which gives off heat to the external environment.When the refrigerant passes completely liquid state and arrives at the expansion device - choke, which is in front of the evaporator.Refrigerant under the influence of low pressure begins to boil and, after passing through the evaporator, it passes into the gaseous state.At this point, it absorbs heat from the coolant to decrease its temperature.
It works every chiller.Cooling takes the same pattern independently of the make and type of the chiller.
Classification chillers
now manufacturers produce a large range of chillers with different capacities - from 5 to 9000 kW.These powerful units allow the conditioned space as small and multi-storey buildings.
All existing chillers are classified by such characteristics:
1. By type of condenser cooling:
- Water - cooled condenser ordinary tap water.Chiller water is considered the most cost-effective and costs less.Also, the type of water conditioner is smaller in size.But for such a unit will require installation of water recycling.
- Air - operate on the same principle as ordinary household air conditioners.That is directed from the fan air flow that blows capacitor.
2. In the presence of the heating function:
- chillers with heat pump - such models can not only cool the coolant, and heat it;
- chillers without heat pump.
3. By type of construction:
- With built-in capacitor - air cooled chillers are available in close-coupled design.In this case, the unit is a standalone machine, which is connected only to the pipelines from the pumping station.
- chiller condensate - this design allows the machine to install the basic equipment in the room, and the condensate stand out.For example, for the roof or the outer wall of the building part.This solution simplifies maintenance of the chiller and increases reliability because the indoor temperature is kept stable.Furthermore, since all piping chiller located in the building, there is no need to use antifreeze liquid and drained in winter.
4. By type of fan:
- Packaged air-cooled chillers with axial fan - they are a bit cheaper, but create a weak pressure air.For this reason, chillers with axial fan is usually placed in the open - on a building wall or roof.
- Monoblock chillers with centrifugal fan - it creates a stronger air pressure, allowing to place the equipment inside.And the air inlet and outlet ducts provide.
absorption chillers
addition to traditional cooling machines there is an absorption chiller.What is it possible to understand the title.This chiller is used in place of freon and water absorbent.Absorption refrigeration cycle similar to Freon as a refrigerant absorbs heat from the vapor and passes into the liquid state.But the process of absorption chiller did not end there.An external heat source (hot water, gas burner, and so. D.) Of lithium bromide absorbent diluted vapors are water, which fall within the condenser.Here the vapor is condensed into a liquid that enters the evaporator.At this point, it evaporates and absorbs pair absorbent - a concentrated solution of lithium bromide.The solution was again heated and the cooling cycle is repeated again.
chiller-fan coil system
most common today is the chiller-fan coil system.In this case, the unit operates with the internal terminal units, fan coil units are called.Their number may be different, but in some models the number of chiller fan coil is limited.
Air cond is an analogue of the indoor unit of a split system, but it works on the water.It connects with the unit piping system.
fan coils are ceiling, wall, floor, tape and rope.Also available unpackaged closers that can be hidden behind a false ceiling or hidden in a decorative box.
An important advantage of the system is a chiller-fan coil unlimited length communications.The advantages also include low cost of wiring, as the refrigerant is allowed to use ordinary water pipe.
conveniences air conditioning chillers
conditioning systems that use the unit, have several advantages:
- Installing the unit allows to place refrigeration equipment at a distance from the cooling room.
- Cooling machines with heating function completely replace traditional heating system.Therefore, the number of batteries in such areas can be reduced.
- It is possible to connect any number of fan coils.
How to choose a chiller
When choosing the unit should pay attention to the following parameters:
- power of the machine;
- energy savings while working in different modes;
- reliability;
- maintainability;
- presence of protective automation;
- area of equipment installation;
- the use of single-loop systems without remodeling of the entire system;
- environmental friendliness and safety of use.
Innovative systems RHOSS
Today, one of the largest European manufacturers of air conditioning systems is considered company RHOSS.Chiller this brand has a high level of reliability and long service life.Made equipment is constantly being tested and passed technical inspection, the results of which confirms that the product quality standards.
RHOSS company's products have high performance.The equipment is in addition to the obligatory certification tested EUROVEN.This suggests high quality and performance conditioning machines RHOSS.Chiller this manufacturer passes stringent tests at various temperatures of air and water.Therefore, when choosing the best air-conditioning systems to give preference to quality and proven product, the more cheap, but with the worst performance.
How much is the cost of the chiller unit
closely linked to the bundle.Also significantly affect the price of the brand manufacturer.The cost of a mini-air-cooled chiller is in the range 220-450 thousand. Rubles.The price of most industrial cooling machine may be more than 10 million rubles.
If you want to choose a strong and high quality chiller, price - is not the only parameter to which you should pay attention.It is very important to choose the model that will best meet the requirements.
Many companies offer their customers a professional selection of the air conditioning system, its installation and maintenance.Firstly, it is very convenient to the buyer because it is not necessary to look for other contractors.And secondly, the unit will be much cheaper.
