Watercooled chiller products Climate solution for green environment

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

Contents Centrifugal Chiller Flooded Type Screw Chiller DX Type Screw Chiller with Heat Recovery

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

Centrifugal Chiller Centrifugal chiller • Introduction • Features & Benefits • Refrigeration System • Control System

Centrifugal Chiller LCM Series Smart Star LC 1000 Introduction M “Smart Star” Chiller Nominal Cooling Capacity: 1000 RT Centrifugal Chiller Refrigerant: R 134 a 350 R-1500 RT single head 1500 RT-2000 RT dual heads 380 V/6 k. V/10 k. V 50 Hz R 134 a Size Cooling Capacity (RT) Small 350, 400, 450, 500, 550, 600 Middle 650, 700, 750, 800, 850, 900, 950, 1000, 1100, 1200 Big 1300, 1400, 1500

Centrifugal Chiller Introduction Applicable Ambient temp. range: 20 ～ 43 ℃ Unit operation range: Evaporator Condenser Min. Max. Inlet water temp. ℃ 8 18 Outlet water temp. ℃ 5 15 Inlet water temp. ℃ 19 33 Outlet water temp. ℃ 22 41 Maximum chilled water inlet/outlet Temp. difference: 7 ℃

Centrifugal Chiller Introduction Ordering instruction : Standard: 50 Hz , 380 V Wye-Delta starter, 350～ 1300 RT(1230 ～ 4572 Kw) 50 Hz, 10 Kv, 600～ 1500 RT(2110 ～ 5276 Kw) R 134 a Single head 50 Hz 400/415 V need special customize. 50 Hz 380 V 350 -800 RT can customize VSD start. 6 KV for cooling capacity above 600 RT can be customized. 60 Hz for cooling capacity above 600 RT need special customize. Large temperature difference (9 -12 ℃) can be customized.

Centrifugal Chiller Features & Benefits Environmental Friendly R 134 a • Chlorine-free, long-term solution • Non-ozone depleting potential • Lowest toxicity and flammability rating High Reliability • • Operate above atmospheric pressure Single-stage , lessen moving part Refrigerant cooled hermetic motor 100% Factory Run-Tested • • • Advanced capacity adjustment strategy Latest heat transfer surface 10～ 100% Capacity adjustment Lower inrush current Smaller and lighter than open motors No need AC for the mechanical room. High efficiency Hermetic Motor Modular Construction • Easy for container load. • Easy for transportation and loading • Eliminate access problem in the jobsite

Centrifugal Chiller Features & Benefits Keyless impeller coupling • Eliminates stress concentration • Longer life span • Patent design (ZL 01256825. 2) Low Sound and Vibration • Special engineered gearing • Double soundproof gearbox structure • Optimized impeller and tunnel design Excellent oil system Capacity Adjustment • External oil cooler and oil filter, easy to do maintenance and replacement. • High reliability • Unmatched oil reclaim system • IGV work together with moveable diffuser • High part load efficiency • Patent design (ZL 01256824. 4) Keyless coupling

Centrifugal Chiller Refrigeration system Cooling Tower Condenser Compressor Evaporator Orifice Terminal

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

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. : ZL 01 2 56824. 4).

Centrifugal Chiller Refrigeration system Evaporator and condenser Evaporator Condenser Latest heat exchanger surface. Fouling factor: 0. 086 m 2 ·℃/k. W (0. 0005 ft 2·℉·hr/Btu) (0. 0005 FPS) Water side design pressure: 1. 0 Mpa. Higher pressure can customize

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

Centrifugal Chiller Refrigeration system Oil reclaim device High efficiency oil reclaim system separates oil from mixture completely and returns oil back to compressor. No. 1 2 3 Note：〇：on Valve Process Separation of refrigerant and oil Oil reclaim Automatic When oil reclaim system not used Manual ×：off △：less open K 2 and K 3 K 4 K 6 K 7 K 8 K 9 〇 〇 × × × 〇 △ × × 〇 〇 × × × × K 1、K 5、K 10 keep open

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

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

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

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

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

Centrifugal Chiller Control System Touch screen

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

Flooded Type Screw Chiller Flooded Type Screw chiller • Introduction • Features & Benefits • Refrigeration System • Control System

Flooded Screw Introduction 104 -235 RT, Single head 265 -425 RT, Dual heads 380 V/400 V/415 V 50 Hz/60 Hz R 134 a LS B LG 365 M C F Flooded type Refrigerant type C R 134 a; Omit for R 22 Design sequence code Nominal cooling capacity (k. W) Compressor structure type LG：Screw type compressor Compressor structure type B：semi-hermetic Water-cooled chiller

Flooded Screw Introduction Cooling capacity: Cooling capacity(KW) Single head 340, 400, 455, 540, 690, 720, 825 Dual head 915, 1000, 1110, 1200, 1385, 1450 Applicable Ambient temp. range: 20 ～ 43 ℃ Unit operation range: Chilled water outlet temp. Cooling water inlet temp. 5～ 15℃ 20～ 35℃ Maximum chilled water inlet/outlet Temp. difference: 7 ℃

Flooded Screw Introduction Ordering instruction : Standard: 50 Hz 380 V R 134 a Wye-Delta starter 4 steps capacity adjustment(25% 50% 75% 100%) 104～ 425 RT(340 ～ 1450 Kw) 50 Hz 400/415 V can be customized. 60 Hz need special customize. Orifice plus EXV can be customized. Open type compressor for large cooling capacity (above 500 RT)can be customized. Stepless capacity adjustment can be customized. Large temperature difference (9 -12 ℃) can be customized.

Flooded Screw High Efficiency Environmental Friendly R 134 a Reliability serviceability User-friendly Operation Interface Twin-Rotor Screw Compressor Features & Benefits • Flooded type evaporator • Finned heat exchanger tube • 25%, 50%, 100% capacity control or stepless • Chlorine-free, long-term solution • Non-ozone depleting potential • Lowest toxicity and flammability rating • • 100% run-tested for high reliability Orifice plus solenoid valve to throttling Flooded evaporator for easy cleaning Simplified field wiring for easy installation PLC control Graphical display Simple operation • Advanced 5 -6 asymmetry dentiform rotors • Each part is well-proportioned and nonegap matching

Flooded Screw Refrigeration System Construction —Single head 7 8 9 1 Compressor 2 Oil separator 1 3 Evaporator 2 4 Condenser 5 Throttle valve 6 Oil filter 7 Control cabinet 8 Cut valve 9 Safety valve 3 4 5 6

Flooded Screw Refrigeration System Construction —Dual head 6 7 8 1 2 3 4 5 1 Oil separator 2 Evaporator 3 Condenser 4 Throttle valve 5 Oil filter 6 Control cabinet 7 Cut valve 8 Safety valve

Flooded Screw Refrigeration System Refrigeration cycle

Flooded Screw Refrigeration System Compressor Oil separator Service valve 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 Oil filter Injector joint

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 3 ppm. 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

Flooded Screw Refrigeration System Evaporator Flooded evaporator DX evaporator ØMidea Screw Chiller is equipped with high efficiency shell and tube evaporator that are constructed by seamless steel tube with anti-corrosive treatment. ØThe design working pressure for evaporator is 1. 0 MPa, higher pressure vessel can be customized.

Flooded Screw Refrigeration System Condenser Refrigerant inlet Water outlet Water inlet Refrigerant outlet Shell and tube type with refrigerant in the shell and water in the tube. Water side designed pressure is 1. 0 Mpa. Higher pressure can be customized

Flooded Screw Refrigeration System Capacity adjustment—standard u 4 -stage adjustment SV SV 14 (NC) SV 15 (NC) SV 16( NC) 100% OFF OFF 75% OFF ON 50% OFF ON OFF 25%(startup) On OFF Status Oil is supplied by pressure difference, it should be higher than 1. 5 bar. ON: energize, OFF: de-energize

Flooded Screw Refrigeration System Capacity adjustment—optional u 50%~100% stepless adjustment SV Status SV 14 (NO) SV 15 (NC) Startup ON ON Loading OFF Unloading ON ON Holding ON OFF

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.

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

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

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.

Flooded Screw Control System Start cabinet Wiring terminals Contactors: Used for Y- Δ transition KM 1 KM 2 KM 3 Y connection: KM 1 and KM 3 ON Δ connection: KM 1 and KM 2 ON

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.

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

Flooded Screw Control System Touch screen

DX type screw chiller DX Type Screw Chiller • Introduction • Features & Benefits

DX screw LS B LG 130 Introduction M 37 RT-245 RT Single stage 275 RT-488 RT Dual stage 380 V/400 V/415 V 50 Hz/60 Hz R 22 Design series code Nominal cooling capacity (k. W) Compressor structure type LG: Screw type compressor Compressor structure type B: semi-hermetic Water-cooled chiller

DX screw Introduction Cooling capacity: Cooling capacity(KW) Single head 150, 190, 270, 320, 400, 485, 570, 630, 740, 860 Dual head 970, 1060, 1145, 1260, 1370, 1490, 1620, 1720 Applicable Ambient temp. range: 20 ～ 45 ℃ Unit operation range: Chilled water outlet temp. Cooling water inlet temp. 5～ 15℃ 20～ 35℃ Maximum chilled water inlet/outlet Temp. difference: 7 ℃

DX screw Introduction Product order instruction : Standard: 50 Hz 380 V R 22 Wye-Delta starter 4 steps capacity adjustment(25% 50% 75% 100%) 37～ 488 RT(150 ～ 1720 Kw) 50 Hz 400/415 V can be customized. 60 Hz need special customize. R 134 a can be customized. Stepless capacity adjustment can be customized. Large temperature difference (9 -12 ℃) can be customized.

DX screw Reliability serviceability User-friendly Operation Interface Twin-Rotor Screw Compressor Easy and fast installation Features & Benefits • • Matured control logic No oil recovery problem 100% run-tested for high reliability Simplified field wiring for easy installation • PLC controller • Graphical display • Simple operation • Advanced 5 -6 asymmetry dentiform rotors • Each part is well-proportioned and none-gap matching • The unit can be placed in service only after being connected with power and water supply in the jobsite

Heat recovery screw chiller Heat Recovery Screw Chiller

Heat recovery LS B LG 130 Introduction M H 40 RT-245 RT Single stage 275 RT-488 RT Dual stage 380 V/400 V/415 V 50 Hz/60 Hz R 22 Heat recovery type Design series code Nominal cooling capacity (k. W) Compressor structure type LG Screw type compressor Compressor structure type B semi-hermetic Water-cooled chiller

Heat recovery Introduction Cooling capacity: Cooling capacity(KW) Single head 150, 190, 270, 320, 400, 485, 570, 630, 740, 860 Dual head 970, 1060, 1145, 1260, 1370, 1490, 1620, 1720 Applicable Ambient temp. range: 20 ～ 45 ℃ Hot water temperature: In a one way system hot water temperature can reach 45℃. In a circulate system hot water temperature can reach 50℃ or even higher. Recovery heat: 30% of cooling capacity.

Heat recovery Introduction Product order instruction : Standard: 50 Hz 380 V Wye-Delta starter 35～ 40℃ hot water temperature 4 steps capacity adjustment(25% 50% 75% 100%) 40～ 488 RT(150 ～ 1720 Kw) 50 Hz 400/415 V can be customized. 60 Hz need special customize. Stepless capacity adjustment can be customized. 100% heat recovery can be customized.

Reference projects Beijing Capital Airport East Building West Building Terminal 3 of the Beijing Capital International Airport, China 4 units 1000 RT Centrifugal Chiller 6 units 700 RT Centrifugal Chiller 2 units 500 RT Centrifugal Chiller 1 units 350 RT Screw Chiller

Reference projects Exhibition Hall Shanghai Expo Exhibition Hall A 09 and A 10 5 units of 550 RT 10 KV High voltage centrifugal chiller

Reference projects Ramada Hotel , Foshan, China 2 units 800 RT centrifugal chiller 1 units 500 RT centrifugal chiller 1 units 1390 KW screw chiller

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