Large Tonnage Chiller WC Screw

Content Mechanical System Key Components Control Logic Application 2

Mechanical System 3

Cooling water inlet/outlet conn. & Temp. sensor Layout Screw Compressor Control Panel Cooling water inlet/outlet conn. & Temp. sensor Shell & Tube Condenser 4

DX PID Refrigerant System 5

Flooded PID 6

Key Components 7

Condenser H2O R134a Tube

High Efficiency Sub-cooler Condenser Compact and high-efficient sub-cooler Low-liquid flash design requires less refrigerant Control the liquid level accurately to ensure 4.5C sub-cooling High temperature gas in Cold liquid out Subcooler High Efficiency Sub-cooler

Condenser

Condenser Oil Sep.

Evaporator R134a Water DX type

Evaporator H2O R134a Flooded type

Evaporator H2O R134a Full Falling Film type

Evaporator Full Falling Film Reduce 40% of refrigerant charge 25% Flooded Full Falling Film Falling Film Reduce 40% of refrigerant charge Improved performance of oil return and heat transfer

Gas jet Oil system 16

Sound Velocity Pressure Oil System The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe，with the static pressure correspondingly decreasing .

Oil jet

Oil System Oil pump

Oil System Gas jet Oil jet Oil pump Features Vacuum 50 ~ 80kPa; Low gas pressure drop; Low price; Piping design complicated. Vacuum 12 ~ 20kPa; High oil pressure drop, up to 50%; Best stability of oil return; High price; Piping design simply.

Micro processer MIC PLC Price Cheap Expensive Function The same Failure rate 1/10 of PLC - Maintenance Just replace it. Replace it. Not only it, but also the modular;

Control Logic 22

YES Start up 23

Stop 24

Applications 25

Ice/Water storage Storage Series System Storage Parallel System 26

Heat recovery EVA HR COND EEV 45℃ 40℃ 35℃ 30℃ 7℃ 12℃ Note： The highest HR LWT is 60 ℃ , the higher EWT, the less HR.

Heat pump FCU Flooded EVA Pump COND Pump Surface water system Note: Comp FCU Flooded EVA Pump COND Pump Note: Cooling: A on, B off; Heating: A off, B on. Surface water system 28

Heat pump Flooded EVA Pump COND Pump Ground Source Note: Comp FCU Flooded EVA Pump COND Pump Note: Cooling: A on, B off; Heating: A off, B on. Ground Source 29

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Thank You! 31