Large Tonnage Chillers - MIDEA...

Large Tonnage ChillersKingsley Hu

Technical Support Engineer

Customer Service

Top-level Quality Control

Production Line introduction

Global R&D Talent

Major Milestones

Manufacturing Facility

Chiller Products

Reference Projects

Chongqing Plant

After-sales Warranty

Partnership with Carrier

A world-class chiller manufacturing facility

• 200,000m2 site (80,000m2 factory + offices)

• 800 employees (220 engineers)

• Annual revenues USD 300 million

• Annual output: 400 centrifugal chillers, 3,000 water-cooled screw chillers, 1,000 air-

cooled screw chillers, 11,000 modular chillers

Major Milestones

2012

Chongqing General –Hitachi centrifugal

chiller

US chiller experts joined

Midea

• Strategic partnership with Carrier• Direct-drive VFD and oil-free magnetic

centrifugal chillers launched

Chongqing General

established

Chongqing General -York centrifugal

chiller

COP 7.11, IPLV 11.6World’s highest

Water-cooled chiller products gain AHRI

certification

80% stake in Clivetacquired

20162015201420122010199219861964

Global R&D Talent

Plan Design Test

Larry Byron Jim Mike Ed

• Centrifugal compressors

• Screw / centrifugal chillers

World-class Production Line

Top-level Quality Control

• Leading-brand test

equipment and laboratories

System design Product selection

Remote monitoring Site visit / website

Customer Service

• Services include water system design, product selection and after-sales

• Service training courses and certification for local teams

Twice as long as other chiller brands

Warranty

24

30

42

Note: Only parts are free, labor charges not covered

After-sales Warranty

Length

• 30 (42 for compressor) months from

date of shipment or 24 (36 for

compressor) months from date of start-

up, whichever is shorter

• For industrial application chillers,

warranty period is 12 months less than

standard period

Control System

VFD Direct Drive

Key Features

Product LineupChiller Products

Reference Projects

Chongqing Plant

Selection Software

Falling Film Air-Cooled Screw Chiller

Product Lineup – Air-cooled Screw Chiller

• COP: 3.0 - 3.2

• R134a

• T3: Operating range up to 52⁰C

S: 108 - 404 RTT3: 108 - 341 RT

Split: 108 - 171 RT New: 90 - 500 RT

• COP > 3.2

• Oil-free, full falling film

• Available by end-2017

Certifications – Air-cooled Screw Chiller

108 - 404 RT

Product Lineup – Water-cooled Screw Chiller

97 - 506 RT 100 - 490 RT

• Flooded

• COP: 5.6 - 5.9

• R134a

• Full falling film

• COP: 5.9 – 6.2

• R134a

Product Line-up – Centrifugal Chillers

600 - 2,200 RT 250 - 550 RT 150 - 700 RT

• Two-stage

• H: COP: 6.1 - 6.3

• E: COP > 6.3

• Direct-drive, inverter two-

stage

• COP 6.2 - 6.5

• Magnetic two-stage

• COP 5.8 - 6.1

Water-cooled screw chiller Water-cooled centrifugal chiller

Certifications – Water-cooled Chillers

100 - 460 RT 150 - 2,200 RT

Products meet a range of global codes and standards

Globally-Recognized Quality

StarterVFD/Star delta/ Solid state/Auto transformer/DOL(direct on line）

Heat recoveryFull or partial

ControlChiller plant or system control

EfficiencyStandard, high and

super-high

Power supply380V/400V/415V/460V/3.3KV

4.16KV/6kV/10kV/11kV50/60Hz

Leaving water temp.

-6 to 15 ⁰C

Ambient TemperatureS/T3

Options for a Wide Range of Projects

ModesCooling only and cooling/heating

Flooded

40%

25%

Midea Full Falling Film

Mixed Falling Film

Improved oil return and heat transfer performance

Patent

Full Falling Film Technology

Reliable Control

• High-performance ARM processors

• Highly reliable - used in 95% of mobile phones and 25% of electronic

equipment

Other brands: 2100kg Midea: 1250kg

Refrigerant charge reduction: 40%

Support for Green Building Designs

• R134a: non-flammable, environmentally friendly

• Midea falling film technology reduces refrigerant

charge by 40%

• Better heat exchange efficiency leads to energy

savings

• Supports LEED applications

Initial costs

• High efficiency chillers

• Project optimization

• HVAC system control

Maintenance costs

• Oil, refrigerant - 40% lower than other brands

• Parts - sold at cost price

• Long warranty periods

• Free remote monitoring

Save nearly

40%

M

Utility

Lower Project Costs

Advanced temperature control

Operation Range

Co

nd

ensi

ng

tem

p

Evaporator suction temperature

Condensing Hi. Temp. limit

Co

mp

ress

or

curr

ent

limit

Condensing Lo. Temp. limit

Co

olin

g Lo

.Te

mp

lim

it

ExtendedOperating Range

Stable Operation

• Extended operating ranges available

• Pro-active control predicts temperature

trends preventing temperature fluctuations

and avoiding frequent shut-downs

Midea direct-drive two-stage centrifugal

compressor

Full falling Film evaporator

VFD Starter panel

VFD Direct Drive centrifugal Chiller

250 - 550 RT

VFD Direct Drive – Benefits

• Energy saving: COP 6.2 - 6.5, IPLV up to 11.5

• Lower total cost of ownership

• Lower noise

• Patented horizontal back-to-back impeller design ensures less seal leakage and

no gear loss, leading to longer lifespans and improved efficiency

• 360⁰ cooling of compressor motor

• Patented full falling film evaporating technology fully utilizes heat exchange tube

capabilities, improving efficiency

Two-stage compressor impellers

Traditional design

• Stages arranged in series in same

direction

• Higher axial forces and higher stress in

thrust bearings can lead to damage

Midea design

• Unique self-balanced structure

• Axial load on bearings 10% lower

• Lower mechanical losses

• More stable running => longer lifespans

VFD Direct Drive – Impeller Design

70 80 90 100 dB(A)60

85-95

80-90

75-80

Screw

Centrifugal

Magnetic /Direct Drive VFD

VFD Direct Drive – Lower Noise

Direct on line / Across the line (600-800%)

Electric solid state starter (300-400%)

Auto transformer (400-500%)

Star delta / WYE Delta (200-300%)

VFD / VSD (100%)

10

0%

fu

ll lo

ad A

mp

s

0 1 2 5 10 20 30 40 50 60

100

200

300

400

500

600

Time (Seconds)

Start-up In-rush Current

Benefits of VFD

• Linear power system, giving high

efficiency

• Reducing thermal stress on the stator

• Power factor up to 0.95

• Super-high efficiency

• 90 - 450 tons

Falling Film Air-Cooled Screw Chiller

China Condition AHRI Condition

The Top Level under China Condition

3.73.8COP

3.8

3.6

3.4

3.2

3.0

11.8%

Evaporator

Condenser

Storage

High Efficiency

• Falling film heat exchanger serves as evaporator，

Refrigerant charge reduction can reach up to 40%

• Chiller COP: 3.8

Improve Personal Comfort Feeling Level

Cooling

Heating

Hot water

• Function: Integrate cooling,

heating and domestic hot water

into one system .

• Energy recovery to improve

overall system energy efficiency.

• Individuals in the same building

can choose cooling or heating to

meet personal different needs .

Cooling, Heating and Hot Water

OfficeMachine Room

Midea Control System (MCS)

Features and benefits

• Simple and convenient

• Advanced data analysis enables

preventative alarms/warnings and fast

troubleshooting

• Maintenance advice

Applications

• Projects where a BMS is not being

installed but chiller control and

monitoring is required

Midea Intelligent Control System (MICS)

Features and benefits

• Enables energy savings

• Modular design

• Continuous intelligent analysis

Applications

• Projects with particularly high energy-

efficiency requirements

MICS Modules

Sequencing

Status monitoring

Alarms and protection

Combined control

Chiller Combination

Sequencing

Status monitoring


Combined control

Chiller Plant Control

Chilled LWT control

Water flow control

CT VFD control

Sequencing

Status monitoring


Combined control

HVAC Management

Chilled LWT control

Water flow control

CT VFD control

Running cost optimization

Fault detection/prediction

Energy analysis

• Access running data remotely via PC, tablet computer or smart phone

• View operating status, energy consumption, troubleshooting data

• Receive alarms as they occur

Midea Cloud Service Center

Remote Monitoring Service

Centrifugal chiller softwareScrew chiller software

Selection Software

Offices

Hospitals

Government Projects

Hotels and Apartments

Transportation

Shopping Malls

Chongqing Plant

Chiller Products

Reference Projects

Shopping Malls

Hartono Lifestyle Mall,Indonesia

• 5 high efficiency falling-film centrifugal chillers

• Total capacity 5,500 RT

Butovo Mall,Indonesia

• 2 centrifugal chillers

• 1 water-cooled screw chiller


Beijing Capital Airport,China


• 1 water-cooled screw chiller


Transportation

Jakarta International Airport ,Indonesia

• 4 air-cooled screw chillers

• Total capacity 1,400 kW

Sports Stadiums

27th Southeast Asian Games Stadiums ,Myanmar

• Heat recovery water-cooled screw chillers


Beijiao Ramada Hotel, China

• Centrifugal chillers

• Water-cooled screw chillers


Hotels and Apartments

Weifang China Food Valley, China

• 23 air-cooled screw chillers


Russia Federation National Olympics Sports

Training Center, Sochi

• 2 air-cooled screw chiller, total capacity

500 kW

Federal Security Service, Moscow



Government Projects

Rize Hospital,Turkey

Air–cooled screw chiller,

total capacity 1,400 kW

Shorsh Hospital,Iraq

Air–cooled screw chiller,

total capacity 2,400 kW

Hospitals

Federal Security Service, Moscow



Offices

Midea HQ ,China

• Centrifugal chillers

• Water-cooled screw chillers


Q&A

Questions?

Thank you

Large Tonnage Chillers - MIDEA...

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