what is the description of the screw chiller?
Kadley screw chillers are classified into air-cooled (water-cooled) screw chillers, air-cooled (water-cooled) screw low-temperature glycol chillers and air-cooled (water-cooled) low-temperature brine chillers.
Screw chillers are key components-the compressor is named screw chillers, and the state of the unit coming out of the evaporator is gaseous refrigerant; After adiabatic compression by the compressor, it becomes a high temperature and high pressure state. The compressed gas refrigerant is cooled and condensed at the same pressure in the condenser, and then changed into liquid refrigerant after condensation, and then expanded to low pressure through the throttle valve to become a gas-liquid mixture. Among them, the liquid refrigerant at low temperature and low pressure absorbs the heat of the cooled substance in the evaporator and becomes a gaseous refrigerant again. The gaseous refrigerant re-enters the compressor through the pipeline and starts a new cycle. These are the four processes of freezing cycle. And it is also that main work principle of screw chiller. What is the configuration of screw chiller?
The detailed configuration of Kadeli screw chiller is as follows:
Name and place of origin-brand
Compressor Taiwan Province-Hanzhong/Fusheng
Main electrical component LS/ Schneider
Solenoid Valve USA-Emerson
Evaporator Kadeli produced
Condenser Kadeli produced
Pressure controller China-Hezhou
Oil pressure gauge (high pressure) Taiwan Province Fuguo
Oil pressure gauge (low pressure) Taiwan Province Fuguo
Expansion valve USA-Emerson
Drying filter USA-Eco
. ZHOU
Angle valve American Apotheker
Control system German Siemens
Super color touch screen How to select the type of Taiwan Province Veyron screw chiller
Mainly depends on the cooling capacity and circulating water flow. Are there any instructions for the selection of screw chillers?
I'm glad that the R&D department of Kadley Refrigerator has any staff to answer your questions.
The main control parameters of Kadeli screw chiller are refrigeration efficiency coefficient, rated refrigeration capacity, input power and refrigerant type.
2. The selection of water chillers should be considered according to the cooling load and use. For the refrigeration system with long working time under low load, it is advisable to choose multi-head piston compressor unit or screw chiller, which is convenient for adjustment and energy saving.
3. when selecting water chillers, the units with higher efficiency coefficient are given priority. According to statistics, the annual execution time of general water chillers under 111% load accounts for less than 1/4 of the total execution time. In the total execution time, the execution time proportion of 111%, 75%, 51% and 25% load is roughly 2.3%, 41.5%, 46.1% and 11.1%. Therefore, when selecting water chillers, priority should be given to the models with relatively flat efficiency curves. At the same time, the adjustment range of chiller load should be considered when designing and selecting. The multi-head screw chiller has excellent partial load efficiency and can be selected according to the actual situation.
4. When selecting water chillers, attention should be paid to the conditions of nominal working conditions. The actual cooling capacity of water chillers is related to the following factors:
a) the outlet temperature and flow rate of cold water;
b) inlet temperature, flow rate and fouling coefficient of cooling water.
5. When selecting water chillers, attention should be paid to the normal working range of this type of unit, mainly because the current limit of the main motor is the current value of the shaft power under nominal working conditions.
6. In the design and selection, it should be noted that the outlet temperature of cold water should not exceed 15℃ and the outdoor dry bulb temperature of air-cooled unit should not exceed 43℃ under the nominal working condition. If it is necessary to exceed the above range, we should know whether the use range of the compressor is allowed and whether the power of the main motor is sufficient. How to choose low temperature screw chiller?
1. The low-temperature screw chillers range from-5 to-81 degrees, and are classified according to temperature
1. From-5 to-25 degrees
2. From-31 to-51 degrees (single cascade)
3. From-51 to-81 degrees (bipolar cascade)
2. The low-temperature screw chillers are introduced according to low-temperature media. Saline solution can be used from zero to minus 51 degrees, but it is corrosive (alloy copper heat exchanger or stainless steel 316 is recommended)
Provided by Shenzhen Kaideli Refrigerator Device Co., Ltd., for reference only!
How do you charge for cleaning the screw chiller?
Buy your own cleaning solution and recycle it once a year!
generally, scale cleaning solution is enough! Generally, the liquid is pumped into the unit after the recirculation tank is prepared in proportion (at this time, the cooling system can be turned off, only the pump can be turned on), after the shutdown reaction for a period of time, the pump is turned on for recirculation flushing, and finally the cleaning liquid in the recirculation tank is released, and the unit can be used normally after cleaning.
You can also consult companies that clean water-cooled air-conditioning systems. Maybe they can do it. Where to buy the screw chiller?
recently, one of our water-cooled 111HP screw chillers used the brand of Kadeli chiller, and Shandong Gypsum Co., Ltd., the general factory, has always been Kadeli's. Huizhou new factory confirmed theirs here. What's the price of screw chiller?
Water-cooled screw chillers, we have two or three Kadley chillers in Shanghai Qiaoda, and one KDS-1SLA seems to be 141,111, which is much more expensive than other chillers. This is the water chiller ordered by our engineering department. Advantages and disadvantages of direct-use screw water chiller
Advantages of screw water chiller: 1. Simple structure, few moving parts, few wearing parts, only 1/11 of piston type, low failure rate and long service life; 2. Smooth circular motion, no "surge" phenomenon during low load operation, low noise and small vibration; 3. The compression ratio can be as high as 21 and the EER value is high; 4. Convenient adjustment, stepless adjustment in the range of 11%~111%, high efficiency at part load and remarkable power saving; 5. Small in size and light in weight, and can be made into a vertical fully enclosed large-capacity unit; 6. Insensitive to wet stroke; 7. It is positive pressure implementation, and there is no external air invasion and corrosion problem. Disadvantages: 1. The price is higher than that of piston type; 2. The capacity of single machine is smaller than that of centrifugal machine, and the rotating speed is lower than that of centrifugal machine; 3. The lubricating oil system is complex and consumes a lot of oil; 4. The noise of large-capacity units is higher than that of centrifugal units; 5. High machining accuracy and assembly accuracy are required. Screw chiller 911kw price
What is it used for? You need such a large unit. You may find Macroset Machinery to help you.