INDUSTRIAL REFRIGERATION COMPRESSOR UNIT
Screw-type low-temperature brine chiller
Scope of Application
| ltem |
Refrigerating Medium |
Model |
Range (Unit °C) |
| Refrigerating Medium outlet temperature |
Ethylene glycol/calcium chloride |
YS-ZH series |
[0~ -10) |
| YS-NH series |
[-10~ -20) |
| Calcium chloride |
YS-DH series |
[-20~ -30) |
| YS-CH series |
[-30~ -40] |
| Cooling water inlet temperature °C |
Water |
|
19~33 |
Features:
*The YS . H series low-temperature brine chillers are equipped with an open-type screw refrigeration compressor asthe main unit, which are suitable for such refrigeration working medium as R717, R507A, R134a, R404A, R407C, R410Apropane,propylene,dimethyl ether, etc.
*This series of units are a complete set of equipment that provides low-temperature water that meets the coolingreguirements for various production processes, gas liquefaction, and food processing industries such as grains and fruitsin the energy and chemical industry.
*Ethylene glycol, calcium chloride, and various solutions such as methanol, propylene glycol, sodium chloride, etc. canbe used as refrigerating medium for this series of standard units.
Condenser
The evaporative cooling and water-cooled shell-and-tube condenserscan be selected, The water-cooled shell-and-tube condenser useshigh-efficiency heat exchange tubes, which are small in size and lightin weight. The evaporative cooling system is equipped with a liquidreservoir(evaporative cooling is not included on the unit).
Evaporator
It adopts a siphon structure; the low-pressure refrigerant liquid suppliedto the evaporator is in a saturated state, and there is no effect of throttlingflash gas in the heat exchanger, so its heat transfer efficiency is higher. ltsolves the problem of uneven liquid supply, meanwhile, it has the featureof fully soaking the heat exchange tubes ofthe full-liquid evaporator. In thesiphon evaporator, the refrigerating medium goes through the shell pass,so as to reach the turbulent state at a low flow rate, with low resistancealong the way, and the refrigerating medium side has a high heat transferfactor. The mass flow rate of refrigerant is greatly improved when therefrigerant goes through the tube pass, and the heat transfer factor at theworking medium side is also greatly improved, with high heat transferperformance.
Throttle valve
The liquid level control is subject to internationally advanced importedcontrol valve groups to achieve continuous automatic adjustment andgood reliability.
Shell
New 3D printed metal grinding tools are used, which has highercasting accuracy and better appearance, key components areprocessed by advanced machining centers from Japan and Germanyto ensure machining accuracy, patented exhaust port design to reduceexhaust resistance for small noise.
Oil separator
The oil-gas separator of national invention patent is used toachieve multiple impact separation, gravityseparation, and deephigh-efficiency oil-gas filter separation, and achieve efficientoil-gas separation. The gas oil content is less than 5PPM,and a compressor exhaust silencer is installed in the oil separatorto further reduce compressor noise.
Oil cooler
National patented efficient heat exchange tubes,packaged high-precision baffle plates(no gap between the baffle plates and the cylinder),reasonable oil flow rate design, etc. are adopted to greatlyimproveheat exchange efficiency, which has small volume, light weight,stable and reliable heat exchange, and no need for maintenance.
Electric Control
*The while refrigeration unit adopts a fully automated control system;
*The control system has various protections including early warningfor load limit, over limit alarm, and over limit shutdown to ensure safeand stable operation of the compressor;
*The control system adopts PlD energy regulation based on loadchange, which has such advantages as fast load tracking and lowsteady-state error to minimize equipment energy consumption;
*The control system has such functions as operational data collection,monitoring, and storage. The key data is presented in curve charts,with intuitive changing trends.lt also has historical alarm storage andquery functions;
*The human-machine interface adopts a color LCD touch screen thatsupports multilingual selection; generalization of functions to allowusers to configure the functions based on device type;
*The control system supports three protocols simultaneously, ModbusRTU, Modbus TCP, and Profinet, allowing users to freely choose.
Screw compressor condensing unit
Product introduction
The screw compressor condensing unit is a series of products developed and designed by MOON-TECH with LG screwcompressors as the core, lt is divided into Z series and D2 series according to the operating conditions. The Z series unitscan be applied to refrigerated and fresh storage warehouses, or as cold sources for cooling systems in such industriesas chemical, pharmaceutical and food processing, the D2 series units can be used as cold sources for quick freezingwarehouses and single freezing machines, as well as low-temperature process cooling systems in such industries aschemical,pharmaceutical,and food processing.
When the compressor unit is used with a power not exceeding the rated power of the motor, please follow the followingconditions:
| Operating Conditions of Z Series |
| ltem |
Condition |
| Inlet water temperature |
19°C~ 33°C |
| Evaporation temperature |
-23C~ 0C |
| Exhaust temperature |
< 100°C |
| Oil pressure |
0.1-0.3MPa higher than exhaust pressure |
| Oil temperature |
309C~ 65°C |
| Operating Conditions of D2 Series |
| ltem |
Condition |
| Inlet water temperature |
19C~33'C |
| Evaporation temperature |
-46'C~ -20'C |
| Exhaust temperature |
< 100'C |
| Oil pressure |
0.1-0.3MPa higher than exhaust pressure |
| Oil temperature |
30'C~ 65'C |
Note: The cooling water used in this unit should comply with the relevant provisions of GB50050-95 "Code for design of industrial recirculating cooling water treatment".
Excellent Performance
Convenient installation
For this series of units, the compressor, condenser, liquid reservoir,drying filter, etc. are installed on a common base. Users only needto install a suitable evaporator and throttling device, and connectwater and electricity to put the unit into operation. lt is featured withsmallinstallation cycle and convenient maintenance.
Small floor space
This series of units have a compact structure and asmall floor space.
Efficient condenser
Efficient heat exchange tubes are used to enhance the heat exchangeefficiency of the condenser.
Economizer (D2 series)
An efficient dry economizer is used to ensure efficient operationof the compressor under low temperature conditions. A reliablethermal expansion valve is chosen to ensure the optimal liquidsupply ofthe economizer.
Liquid cooling and oil cooling
High heat exchange efficiency, non-corrosive heat exchange tubes,and long service life.
Screw Refrigeration Compressor Unit Application
Screw compressor unit is widely used in food freezing and refrigeration, process cooling, gas liquefaction, building aggregate cooling, scientific research experiments, permafrost drilling, sports venues, mine heat hazard treatment and other fields that require artificial low-temperature environments. The compressor unit can be customized according to user needs, and the energy adjustment device (adjustable volume-reduction ratio, frequency conversion) is optional, and the standard configuration control mode is automatic; data can be shared in the cloud and monitored in real time.
MOON ENVIRONMENT TECHNOLOGY Co., Ltd was founded in 1956 and listed in Shenzhen stock exchange in 1998 with stock code 000811. Now Moon-tech is a diversified and international comprehensive equipment industrial enterprise. The main business covers low-temperature refrigeration, central air conditioning, environmental protection heating, energy and chemical equipment, precision castings, smart services, hydrogen energy development, etc. In recent years, MOON-TECH has successively won the titles of Top 30 Enterprises with Core Competitiveness in China's Machinery Industry, Top 100 Enterprises of National Machinery Industry, Meritorious Enterprise of Equipment in China, and Demonstration Enterprise for Ozone Layer Protection.
Our mission: Constantly create value for customers.
Moon-Tech, a leading refrigeration company is your ideal partner in temperature control field!
As a leading company in Chinese refrigeration industry, Moon-Tech has been keeping paces with the world latest technology in order to provide stable, low maintenance and high quality equipments in food processing, low temperature cold storage, petrochemical, semiconductor, chemical industry, hydroelectricity, coal industry etc.
In food cold chain field, Moon-Tech holds more than 60% domestic market share. In overseas market, more than 400 customers from 80 countries and regions have benefited from our products and after sale services.
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Since the advent of the LG series of high-efficiency screw compressors, they have been well-received by users at home andabroad for their great performance and relability. The series products have won the First Prize for scientifc and TechnologicalProgress of Shandong Province, First Prize for Scientific and Technological Progress of Ministry of Education, special Awardof Sclentific and Technological Progress of Chinese Assoclation of Refrlgeration and Second Prize for National sclentiftc andTechnological in 2006. MOON-TECH continues to carry out scientific research, and has made key breakthroughs in workingmedia, operating conditions, eneray eficiency indicators, etc, and succesfuly achieved the transformation and upgrading oscrew compressor manufacturing and application. The project of "Key Technologies R&D and Application of Screw Compressoiwith Special Medium under Extreme Working Conditions" won the first Prize for scientifc and Technological progress of Yeal2019 China Machinery Industry.
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