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Water-cooled chiller products

Water-cooled chiller products. Climate solution for green environment !. Nicholas. Contents. Product line-up. Midea Water Cooled Chiller Products. Centrifugal Chiller. Flooded Type Screw Chiller. DX Type Screw Chiller. Heat Recovery Screw Chiller. Centrifugal Chiller.

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Water-cooled chiller products

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  1. Water-cooled chiller products Climate solution for green environment ! Nicholas

  2. Contents

  3. Product line-up Midea Water Cooled Chiller Products Centrifugal Chiller Flooded Type Screw Chiller DX Type Screw Chiller Heat Recovery Screw Chiller

  4. Centrifugal Chiller Centrifugal chiller

  5. Centrifugal Chiller Introduction Smart Star LCM Series “Smart Star” Chiller Nominal Cooling Capacity:1000RT 350R-1500RT single head 1500RT-2000RT dual heads 380V/6kV/10kV 50Hz R134a Centrifugal Chiller Refrigerant:R134a

  6. Centrifugal Chiller Introduction Applicable Ambient temp. range: 20 ～ 43 ℃ Unit operation range: Maximum chilled water inlet/outlet Temp. difference: 7 ℃

  7. Centrifugal Chiller Introduction Ordering instruction : Standard: 50 Hz ,380V Wye-Delta starter, 350～1300RT(1230 ～ 4572Kw) 50Hz,10Kv, 600～1500RT(2110 ～ 5276Kw) R134a Single head 50Hz 400/415V need special customize. 50Hz 380V 350-800RT can customize VSD start. 6KV for cooling capacity above 600RT can be customized. 60Hz for cooling capacity above 600RT need special customize. Large temperature difference (9-12 ℃) can be customized.

  8. Centrifugal Chiller Features & Benefits

  9. Centrifugal Chiller Features & Benefits Keyless coupling

  10. Centrifugal Chiller Refrigeration system Cooling Tower Condenser Compressor Terminal Evaporator Orifice

  11. Centrifugal Chiller Refrigeration system Compressor Moveable Diffuser High Oil Tank Motor Rotor Variable Inlet Guide Vanes Motor Shaft Thrust Bearing Balance Pipe Bull Gear Motor Stator Pinion Thrust Bearing Spraying Pipe Impeller Bull Gear Journal Bearing Oil Seal Pinion Shaft Labyrinth Seal

  12. Centrifugal Chiller Refrigeration system IGV and diffuser Vanes Diffuser Inlet guide vanes plus moveable diffuser lead to stepless capacity range from 10% to 100% and avoid unit surge, also the construction was awarded by State intellectual property office of P.R.China(No.:ZL01 2 56824.4).

  13. Centrifugal Chiller Refrigeration system Evaporator and condenser Evaporator Condenser Latest heat exchanger surface. Fouling factor: 0.086m2 ·℃/kW (0.0005ft2·℉·hr/Btu) (0.0005FPS) Water side design pressure:1.0Mpa. Higher pressure can customize

  14. Centrifugal Chiller Refrigeration system Throttling orifice Condenser Evaporator Throttle Orifice Throttle Orifice Oil Reclaim Device When the high pressure liquids flow through orifice, the liquids’ pressure and temperature will be decreased.

  15. Centrifugal Chiller Refrigeration system Oil reclaim device High efficiency oil reclaim system separates oil from mixture completely and returns oil back to compressor. Note：〇：on ×：off △：less open K1、K5、K10 keep open

  16. Centrifugal Chiller Control System Control cabinet Touchable screen Emergency button Ventilation Fan

  17. Centrifugal Chiller Control System Control cabinet Current transmitter Power supply PLC Plug Rely Air switch Transmission Modular Fan Wire terminal To Earth

  18. Centrifugal Chiller Control System Starter Standard Star-Delta Optional Auto Transformer Across the line VSD

  19. Centrifugal Chiller Control System Touch screen Welcome page After power on, enter the welcome page: 1.Press “Enter” ,input the password, if right, goes into the main page

  20. Centrifugal Chiller Control System Touch screen Main page Display chiller running condition and other function menu Chiller running condition Function menu

  21. Centrifugal Chiller Control System Touch screen

  22. Centrifugal Chiller Control System Network control Communication by RS485 1:1 Host computer system 1:N Host computer system RS 485 RS485 Max. 32 units/network Communication distance:500m

  23. Flooded Type Screw Chiller Flooded Type Screw chiller

  24. Flooded Screw Introduction 104-235RT,Single head 265-425RT,Dual heads 380V/400V/415V 50Hz/60Hz R134a LS B LG 365 M C F Flooded type Refrigerant type C R134a; Omit for R22 Design sequence code Nominal cooling capacity (kW) Compressor structure type LG：Screw type compressor Compressor structure type B：semi-hermetic Water-cooled chiller

  25. Flooded Screw Introduction Cooling capacity: Applicable Ambient temp. range: 20 ～ 43 ℃ Unit operation range: Maximum chilled water inlet/outlet Temp. difference: 7 ℃

  26. Flooded Screw Introduction Ordering instruction : Standard: 50 Hz 380V R134a Wye-Delta starter 4 steps capacity adjustment(25% 50% 75% 100%) 104～425RT(340 ～ 1450Kw) 50Hz 400/415V can be customized. 60Hz need special customize. Orifice plus EXV can be customized. Open type compressor for large cooling capacity (above 500RT)can be customized. Stepless capacity adjustment can be customized. Large temperature difference (9-12 ℃) can be customized.

  27. Flooded Screw Features & Benefits

  28. Flooded Screw Refrigeration System Construction —Single head 7 8 9 1 2 3 4 5 6

  29. Flooded Screw Refrigeration System Construction —Dual head 6 7 8 1 2 3 5 4

  30. Flooded Screw Refrigeration System Refrigeration cycle

  31. Flooded Screw Refrigeration System Compressor Service valve Oil separator Motor cable box Squirrel-cage motor Suction port Capacity adjustment system High precision SKF/FAG zero clearance Capacity adjustment slide valve 5-6 Asymmetry dentiform Injector joint Oil filter

  32. Flooded Screw Refrigeration System Oil separator The Oil Separator comes from MANN Germany with reliable quality. The oil content in the gas can be controlled below 3ppm.The oil-gas separating amount is double of other products. The large oil filtering area reduces refrigerant flux speed, and has better separating effect and long lifespan by the secondary reflux technology adopted. The main purpose to add the external oil separator is to improve the separating efficiency and guarantee good lubrication. Internal oil separator External oil separator

  33. Flooded Screw Refrigeration System Evaporator DX evaporator Flooded evaporator • Midea Screw Chiller is equipped with high efficiency shell and tube evaporator that are constructed by seamless steel tube with anti-corrosive treatment. • The design working pressure for evaporator is1.0MPa, higher pressure vessel can be customized.

  34. Flooded Screw Refrigeration System Condenser Refrigerant inlet Wateroutlet Water inlet Refrigerant outlet Shell and tube type with refrigerant in the shell and water in the tube . Water side designed pressure is 1.0Mpa. Higher pressure can be customized

  35. Flooded Screw Refrigeration System Capacity adjustment—standard • 4-stage adjustment Oil is supplied by pressure difference, it should be higher than 1.5 bar. ON: energize, OFF: de-energize

  36. Flooded Screw Refrigeration System Capacity adjustment—optional • 50%~100% stepless adjustment

  37. Flooded Screw Control System PLC Function: The core component of the whole control system, PLC controls the chiller by checking those analog signals such as the outer protection input , temperature , pressure, control signal of the touch screen.

  38. Flooded Screw Control System Power protection Function: Inspect the voltage range, phase sequence; to protect the compressor by checking the quality of power .

  39. Flooded Screw Control System Pressure switch Position: Right side of control cabinet. At the back of the High/Low pressure gauge. Function：Make sure the discharge and suction pressure in the safe range. Reset button High pressure switch Low pressure switch

  40. Flooded Screw Control System Water flow switch Position: When installing the water flow switch, need 5 times of diameter away from any bend and the diameter of the pipe must be the same as chiller inlet or out . Function：Check whether the water system works normal or not , to protect the chiller from being damaged due to lack of water. Notice: Please check the water flow direction before installing the water flow switch. It’s a safety switch, cannot be used to start /stop the chiller.

  41. Flooded Screw Control System Start cabinet Wiring terminals Contactors: Used for Y- Δ transition Y connection: KM1 and KM3 ON Δconnection: KM1 and KM2 ON KM1 KM2 KM3

  42. Flooded Screw Control System Touch screen After the touch screen and the control system is power on, enter the welcome interface. Press anywhere of the welcome page ,then enter the main page.

  43. Flooded Screw Control System Touch screen Dispaly： Running status of the chiller/Date and time. Buttons: 1.start/stop 2.System setting 3.alarm 4.Current 5.Parameter check 2 3 4 5 1

  44. Flooded Screw Control System Touch screen

  45. DX type screw chiller DX Type Screw Chiller

  46. DX screw Introduction 37RT-245RT Single stage 275RT-488RT Dual stage 380V/400V/415V 50Hz/60Hz R22 LS B LG 130 M Design series code Nominal cooling capacity (kW) Compressor structure type LG:Screw type compressor Compressor structure type B:semi-hermetic Water-cooled chiller

  47. DX screw Introduction Cooling capacity: Applicable Ambient temp. range: 20 ～ 45 ℃ Unit operation range: Maximum chilled water inlet/outlet Temp. difference: 7 ℃

  48. DX screw Introduction Product order instruction : Standard: 50 Hz 380V R22 Wye-Delta starter 4 steps capacity adjustment(25% 50% 75% 100%) 37～488RT(150 ～ 1720Kw) 50Hz 400/415V can be customized. 60Hz need special customize. R134a can be customized. Stepless capacity adjustment can be customized. Large temperature difference (9-12 ℃) can be customized.

  49. DX screw Features & Benefits

  50. Heat recovery screw chiller Heat Recovery Screw Chiller

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