Chillers (water cooling units) are compact units adapted for fresh water or brine condenser cooling. Depending on needs, it is possible to offer dedicated, customised version of the chiller, made of special materials (eg low-magnetic version), special protection (eg shock absorbers), non-standard power supply, control, loads or construction.
Chillers consist of the following components:
Depending on the efficiency and needs, it is possible to produce aggregates with reciprocating compressors, screw compressors (semi-hermetic or open) or Scroll compressors.
As a standard, we use shell and tube condensers adapted for cooling with fresh water (copper low-finned tubes), brine or sea water (low-finned copper-nickel or brass tubes). Thanks to the use of outside and inside finned tubes, the condenser obtains better heat transfer parameters and thus smaller overall dimensions.
It is possible to use shell-and-tube or plate evaporators. If required, the evaporator can be made of stainless steel. The evaporator's inlet and outlet temperature sensors, flow sensor and anti-freeze sensor are used to control the water flow through the evaporator.
Chiller unit is equipped with: shut-off valves, filter dryer, electronic expansion valves, high and low pressure gauges, pressure transmitters, solenoid valve and safety valves.
The controller has, among others the following functions:
Condensing and compressor units
WCU condensing units, are designed to work in air conditioning systems with air-handling unit's cooling section and in refrigeration systems of cold and freezing stores.
The aggregate in the standard version includes:
and can be equipped optionally with:
AP condensing units are equipped with an air-cooled condenser.
The CU compressor units are designed for refrigeration systems with a remote condenser.
They are made of compressor, oil separator, board with control and safety instruments and shut-off valves.
For compressors in the above mentioned aggregates, additional equipment is optionally available:
Shell and tube condensers: SPR and SPRZ type
Shell and tube condensers, SPR and SPRZ type, are designed for condensing refrigerant vapors in refrigeration units, and the SPRZ tank condensers are additionally used to store the liquid refrigerant.
The condensers consist of a body, buddle of low-finned tubes, expanded in tube sheets and water covers.
The cooling water flows in the tubes, while the cooling agent condenses in the inter-wall space on their outer surface.
Removable covers direct the flow of water on both sides of the condenser, they are equipped with inlet and outlet connectors for water. That construction allows mechanical cleaning of tubes of impurities.
Water covers are protected against corrosion by polyamide layer, which is characterized by good tightness, durability and abrasion resistance as well as low coefficient of friction in relation to water.
Thanks to covering the water cover with polyamide, effective protection against electrolytic corrosion is obtained, which can occur at the contact of various metals in the sea water environment.
In the reservoir version of the condensers (type SPRZ), are designed to condense and storage refrigerants.
In the lower part of the shell of SPRZ type are located two sight glasses allowing observation of the level of the refrigerant inside the condenser.
Condensers can ba built of low finned tubes made of copper (fresh water cooled), cupronickel or brass (sea water cooled).
Condensers are constructed and approved according to requirements of Classification Bodies: DNV / GL, LRS, BV, RMRS, RINA, ABS, PRS and also UDT or TUV.
Shell and tube evaporators PSGR type
Shell and tube evaporators (dry expansion type) with the evaporating of the medium inside the tubes are designed for cooling water, technological brine or glycol solutions used in air-conditioning plants.
We offer various receivers for accumulation and storage of HFC refrigerants in cooling plant:
Receivers can be equipped optionally with level indicator, shut-off and relief valves.
Besides we offer receivers for other refrigerants: ammonia, CO2 and also for accumulation of water or brine in the indirect system.
Marine air-conditioners type MAC
MAC compact air conditioners are adapted to work in wheelhouses and other rooms on passenger ships, commercial vessels, platforms.
We offer the following services for industrial plants: