In the refrigeration industry, it is divided into air-cooled chillers and water-cooled chillers according to compressors, screw chillers and scroll chillers, and low-temperature industrial chillers and normal-temperature chillers according to temperature control. The temperature of normal temperature water chillers is generally controlled within the range of 0 -35 degrees. Generally, the temperature of the low-temperature unit is controlled at about 0 to-100 degrees.
Chillers are also called freezers, refrigeration units, ice water units, cooling equipment, etc. Because it is widely used in all walks of life, the requirements for chillers are different. Its working principle is a multifunctional machine, which removes liquid vapor through compression or endothermic refrigeration cycle.
Does the compressor of screw chiller need heat preservation? No, what you see is not insulation, but silencing. There is a short energy regulation mechanism that may or may not need heat preservation.
The symbol of normal operation of the screw chiller compressor (1) The outlet pressure of the compressor is 1.8 ~ 1.47 MPa (gauge pressure);
(2) The exhaust temperature of the compressor is 45 ~ 90℃, and the maximum temperature does not exceed 65438 0.05℃;
(3) The oil temperature of the compressor is about 40 ~ 55℃;
(4) The oil pressure of the compressor is 0.2 ~ 0.3 MPa (gauge pressure);
(5) When the compressor is running, the sound should be even and steady without abnormal sound;
(6) The condensing temperature of the unit should be 3 ~ 5℃ higher than the cooling water temperature; The cold pole and temperature should generally be controlled at about 40℃, and the inlet water temperature of condenser should be lower than 32℃;
(7) The evaporation temperature of the unit should be 3 ~ 4℃ lower than the outlet temperature of cooling water, generally about 5 ~ 7℃.
(4) Stop the operation of the screw refrigeration compressor
The shutdown of screw refrigeration compressor can be divided into normal shutdown, emergency shutdown, automatic shutdown and long-term shutdown.
I work in Chongqing Liwen Paper Mill, and I use the products of Shenzhen Kaideli Refrigeration Equipment Co., Ltd. provided by them, which brings convenience to my equipment management. I hope I can solve this problem for you.
What is the effect of choosing a smaller screw chiller compressor? Because the choice of condenser, evaporator and throttling device are all matched with the compressor, the matching of condenser and evaporator is relatively large, which leads to the increase of supercooling and superheat, which may have a certain impact on the energy efficiency ratio (cop) at full load operation. Depending on how small your compressor is, it should not be a big problem within 10%. In addition, in low load operation (25% load operation), the energy efficiency ratio will be greatly reduced due to the mismatch of throttling devices.
According to our experience, if the compressor gives a low pressure alarm, the main reason is that the chiller leaks refrigerant or the capillary tube of the chiller is blocked. It is suggested that the chiller be repaired, so that the after-sales technicians of the manufacturer can find out the leakage point for repair welding or replace the capillary tube of the chiller.
Guangdong screw chiller price Guangdong screw chiller price is not good, depending on how old you are, there seems to be a good model. Our factory has a Kadeli water cooler KDS-080SLA, which seems to be hundreds of thousands, and is used in the Yunda project.
Can the water-cooled screw chiller heat? Water-cooled screw freezer can be heated.
Water-cooled screw chiller has the function of heat recovery. In refrigeration engineering, the heat storage of the unit is increased. Generally, hotels use this kind of equipment more, which is used for domestic hot water. There are also water source heat pump units and ground source heat pump units, which can both cool and heat, and generally use small air-cooled heat pump units.
In the refrigeration industry, it is divided into air-cooled chillers and water-cooled chillers according to compressors, screw chillers and scroll chillers, and low-temperature industrial chillers and normal-temperature chillers according to temperature control. The temperature of normal temperature water chillers is generally controlled within the range of 0 -35 degrees. Generally, the temperature of the low-temperature unit is controlled at about 0 to-100 degrees.
Chillers are also called freezers, refrigeration units, ice water units, cooling equipment, etc. Because it is widely used in all walks of life, the requirements for chillers are different. Its working principle is a multifunctional machine, which removes liquid vapor through compression or endothermic refrigeration cycle.
Application scope of screw chillers Water-cooled screw chillers are widely used in many industries, such as plastic absorption, plastics, electroplating, electronics, fish farming, construction, machinery, hardware, chemical industry, pharmacy, food processing and preservation.
Screw rotor profile design of screw chiller, compressor rotor is directly driven by motor, with outstanding compression efficiency, quiet and advanced operation, economizer and double-loop design, slide valve stepless adjustment of compressor capacity and accurate dynamic control of electronic expansion valve, intelligent energy-saving reset function of optimizing system partial load efficiency, and automatic adjustment of chilled water when backwater or outdoor environment temperature drops through high-sensitivity temperature sensor.
The main control parameters of screw chiller are refrigeration performance coefficient, rated refrigeration capacity, input power and refrigerant type. Screw chillers can be used in plastic industry, electroplating industry, electronics industry, fish farming industry, construction industry, machinery industry and so on. Multi-head screw chiller has excellent part-load performance and can be selected according to the actual situation.
The biggest advantage of screw chiller-the industrial application of Kadler screw chiller in structural performance
Water chillers for electronic industry and ultrasonic cleaning industry: Water chillers can stabilize the molecular structure of electronic components on the production line, improve the qualification rate of electronic components, reduce the temperature of cleaning agents, condense gaseous cleaning agents, and effectively prevent the volatilization of cleaning agents.
Chiller for wire rod extrusion granulation industry: obviously, the water tank is an open container, so pay attention to it when choosing a chiller. The evaporator of water chiller should be shell-and-tube type, not coil type. The reasons are as follows: the evaporator of coil chiller is an open water tank. When the chiller stops working, the water pump has no pressure, and the water level in the water tank is generally higher than that of the chiller. At this point, the water in the water tank will flow back to the water tank of the chiller, causing the water tank of the chiller to overflow. Shell-and-tube type is different. Its evaporator is a closed loop, so there will be no overflow problem.
Coolers for control machine tools, coordinate boring machines, grinders, machining centers, combined machine tools and various precision machine tools: used for multi-axis lubrication and cooling of transmission medium of hydraulic system, which can accurately control oil temperature, effectively reduce thermal deformation of machine tools and improve machining accuracy of machine tools. Improve mechanical lubrication efficiency, reduce wear and mechanical life.
The basic components of the Cadbury screw chiller system are as follows:
1. compressor: the compressor is the core component of the whole refrigeration system and the power source of refrigerant compression. Its function is to convert the input electric energy into mechanical energy and compress the refrigerant.
2. Cardelli condenser: The condenser plays the role of outputting heat energy and condensing refrigerant during refrigeration. After the high-pressure superheated steam discharged from the refrigeration compressor enters the condenser, all the heat absorbed in the working process, including the heat absorbed from the evaporator and refrigeration compressor and the heat absorbed in the pipeline, is transferred to the surrounding medium (water or air) and taken away; The high-pressure superheated steam of the refrigerant is condensed into liquid again.