Air cooled screw chiller Introduction Product line up Features Applications Certifications Reference projects

Introduction Air Cooled Chiller

Midea General Introduction Company Size Registered capital : 12.5 MUSD Total investment : 60 MUSD Manufacturing capacity : 250 MUSD Factory area : 500,000 ㎡ Factory Introduction

the ONLY local company who masters core technology of centrifugal chiller including designing, developing and manufacturing 1000 workers, 200 engineers & experienced workers 70 senior engineers, 3 top technical experts 8,000KW ，chiller testing stand. Largest in Asia! One of the biggest chiller manufacture base in the world.

In 1964, General developed and produced independently China’s first centrifugal chiller (R11) In 1969, General developed China’s first low – temperature centrifugal chiller (-30℃) In 1973, first centrifugal chiller specially for nuclear submarine In 1980, first 3000TR centrifugal chiller (ammonia) In 1985, General introduced Hitachi t echnology on Centrifugal chiller design and manufacturing Factory Introduction History

In 1994, developed independently compatible centrifugal Chiller for both R134 and R11 which won government Environmental protection reward In 1996, obtained ISO9001 certification In 1998, introduced new centrifugal compressor design technology From North Research & Engineering Corporation (NREC,USA) Upgrade compressor design capability comprehensively In 1999, supply R134a centrifugal chillers to QinShan nuclear Power plant. Nice feedback till now From 1993, General cooperated with York for Producing R123a centrifugal chiller In 2001, new generation R134a, two compression stage, Low temperature centrifugal chiller (-15℃) Factory Introduction History

In 2004, General joined hands with Midea. In 2000, imported ANSYS (USA) hydrokinetics analysis software to further improve compressor design capability 46 year experience on chiller Solid Developing Steps Leading Technology 46 year experience on chiller Solid Developing Steps Leading Technology In 2006, launch the VFD/VSD centrifugal chiller.Complete the product line in water cooled centrifugal chiller,screw chiller, Scroll chiller and all kinds of aircooled chiller. Factory Introduction

Product lineup Air Cooled Chiller

Product line Up Reversed M shape heat exchanger 360kW 450kW 600kW 720kW 800kW 900kW New

Product Line Up 250kW 350kW V shape heat exchanger Max 2 units can be combined together before ex-factory.  =500Kw  =600Kw  =700Kw

Product Lineup Nomenclature LSBCW250LG LS: water chiller B: semi-hermetic compressor LG: screw chiller C: R134a ； omit for R22 W: Air-cooled condenser 250: nominal cooling capacity (KW) R134a /M M,A: CE certification

Product Features Air Cooled Chiller

Product Features Compressor Reversed M shape Bitzer High efficiency type V shape  Fusheng screw compressor (R134a system)  Hanbell screw compressor(R22 system)

Twins screw compressor Product Features

Air side heat-exchanger  Reversed M shape  V shape  High-efficiency copper pipe  Hydrophilic blue fin

Product Features Evaporator Water side heat-exchanger  Shell and tube type, copper tube  DX without any oil return problem  20 mm insulation

Product Features Fan and motor Static and dynamic balanced fan with low noise and vibration.  Big airflow  High efficiency fan motor. Direct drive type

Product Features Refrigerant flow control  Danfoss brand  Electronic-expansion valve  High precise control  Real PID modulation

Product Features Electrical control system Control box Low voltage side Starter High voltage side

Product Features PLC & Touchable screen PLC control system :  Powerful control function  Touchable screen  Quick and precise  Remote control is available （ option ）  Connecting with monitor PC is available （ option ）

PLC & Touchable screen Product Features Parameter settingFunction setting

PLC & Touchable screen Product Features Working state

Protection items Product Protection Water flow cutoutPower Fault protection Anti-freeze protectionContactor Fault protection High-pressure alarmDischarge temperature too high Low-pressure alarmFin temperature too high Compressor Inside ProtectionWater Inlet/outlet temperature sensor Oil level protection Ambient temperature sensor open/short circuit Oil pressure differential protection Coil temperature sensor open/short circuit Compressor overload protection Discharge temperature sensor open/short circuit Fan overload protection

Applications Air Cooled Chiller

Product Application range  Applicable ambient temp. range:  Water outlet temp. adjustable range: SeriesR22R134aR134a(High ambient temp. type) Ambient temp.20℃~45℃20℃~43℃20℃~56℃ SeriesR22 unitsR134a units Chilled water outlet temp.5℃~15℃4℃~17℃ 56 ℃

Product Application range NoContentRunning range 1Ambient Temp.R134a : 20~43℃ / High temp. type: 20℃~56℃ 2Outlet water Temp.4℃~17℃ 3Water flow volumeRating flow volume +20% 4Max inlet/outlet Temp. difference7℃7℃ 5Fouling factor(m2C/Kw) Power supply380V-3P-50Hz standard 415V-3P-50Hz; 380V-3P-60Hz as option 7Voltage toleranceRating Voltage +10% 8Phase tolerance+2% 9Power supply frequency+2% 10StarterDelta-star 11Evaporator max. working pressure1.0MPa 12Compressor Max.start count4 times/h 13Environment qualityHigh corrosive environment and high humidity should be avoid 14Drainage systemThe height of pounding should not be higher than the base of the unit on the spot.

Application Simple structure and simple application Low initial investment and maintenance cost Air Duct system Air Handling units Air Cooled Screw Chiller Chilled Water Pipe Chilled Water Pump

The Applied Location Comfort cooling & Process application: Restaurant, hotel, hospital, school, office, factory and etc. Place limit Install on the roof or ground Lack Water Popular used in the place lack of water Simple system No need cooling towers, cooling pumps.

Air-cooled system, no need cooling water tower at the condensing side, easy to install. Features Air-cooled system Application

Reverse M shape Air-cooled Screw Chiller Different capacity in single package can be choose freely.  360Kw 450Kw 600Kw with Single compressor  720Kw 800Kw 900Kw with Dual compressors  Higher than 900Kw cooling capacity we recommend to use multi water system Application

V shape Air-cooled Screw Chiller Modular chiller can be combined together to supply different cooling capacity.  250kW unit, they can combined 8 units together.  350kW unit, they can combined 8 units together.  Capacity range from 250Kw to 2800Kw Application

System sketch Application

Air-cooled screw unit can be combined by single unit, double units or both. By connecting each own inlet & outlet pipeline in series, 1-8pcs module can be combined and the max cooling capacity is 2800KW, unit system is shown as follows: The layout of chiller Application

System sketch It can be used to protect the chiller, when it check the water flow rate is lower than normal level, it will get the chiller stop work. And usually it is installed on the outlet pipe of evaporator. Water flow switch: Application

Certifications Air Cooled Chiller

CE Certifications

Reference projects Air Cooled Chiller

Reference projects Maputo International Airport, Mozambique LSBLGCW250*15 Units Airport

Reference projects Jakarta International Airport, Indonesia LSBLGCW350*4 Units Airport

Reference projects Castagna Univel factory, Italy Factory

Reference projects Costra Media factory, Dubai UAE 250KW 6 units Working temp up to 52 ℃ Factory

Reference projects 350Kw 6 units 250Kw 3 units Working temp up to 52 ℃ Mohammed Ben Zayyed city Abu-Dahbi UAE Office

Reference projects Lanco Hill Group, Hyderabad, India; 350Kw 2 units High ambient type Office

Reference projects Ufa Supermarket, Russia 250KW 2 units Supermarket

Reference projects Chinese high speed rail way stations, China 350Kw 29 units Station

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