commercial air conditioners 2018/2019 - midea aircon€¦ · certi˜ed in accordance with the ahri...

1803-9C1806

Magnetic Full Falling FilmCentrifugal Chiller

Cooling Capacity: 150~700RTR134a,50/60Hz

Commercial Air Conditioners 2018/2019

Commercial Air Conditioner Division

Midea Group

Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China

Postal code: 528311

Tel: +86-757-26338346 Fax: +86-757-22390205

cac.midea.com global.midea.com

Note: Product speci�cations change from time to time as product improvements and developments are released and may vary from those in this document.

We have three production bases: Shunde, Chongqing and Hefei.

MCAC Shunde: 38 product lines focusing on VRF, Split Products, Heat Pump Water Heaters, and AHU/FCU.

MCAC Chongqing: 14 product lines focusing on Water Cooled Centrifugal/Screw/Scroll Chillers, Air Cooled Screw/Scroll

Chillers.

MCAC Hefei: 11 product lines focusing on VRF, Chillers, and Heat Pump Water Heaters.

Midea CACMidea CAC is a key division of the Midea Group, a leading producer of consumer appliances and provider of heating,

ventilation and air conditioning solutions. Midea CAC has continued with the tradition of innovation upon which it was

founded, and emerged as a global leader in the HVAC industry. A strong drive for advancement has created a

groundbreaking R&D department that has placed Midea CAC at the forefront of a competitive �eld. Through these

independent e�orts and joint cooperation with other global enterprises, Midea has supplied thousands of innovative

solutions to customers worldwide.

Midea Company Introduction

Midea CAC Introduction

2017 Developed the large capacity air cooled scroll chiller.

2016 Acquire an 80% stake in Clivet.

2015 Launched the inverter direct-drive centrifugal chiller and magnetic chiller.

An international strategic Platform has brought Midea Group, Carrier Corporation and Chongqing General

Industry Group together in the chiller business.

2013 Launched the super high e�ciency centrifugal chiller with dual-stage compressor and full falling �lm evaporator.

2008 Developed the Smart Star new-generation Semi-hermetic centrifugal chiller.

2007 Won the �rst Midea centrifugal chiller project overseas.

2006 Launched the �rst VFD (Variable Frequency Drive) centrifugal chiller.

2004 Acquired MGRE entered the chiller industry.

2001 The R134a (LC) series centrifugal chiller was named as a key national product.

1999 Entered the CAC �eld.

02

Certi�ed in accordance with the AHRI Water-Cooled Water-Chilling and Heat Pump Water-Heating Packages Using Vapor Compression Cycle Certi�cation program, which is based on AHRI Standard 550/590(I-P) and AHRI Standard 551/591 (SI). Certi�ed units may be found in the AHRI Directory at www.ahridirectory.org

High ef f iciency

03 04

Overview Nomenclature

Inverter

Cooling capacity: RT

Centrifugal compressor

Cooling only

Water cooled

Design serial number

C C W D H V500

Benefits and Features:Energy saving: COP up to 6.322, IPLV up to 11.23.

Technology leading: magnetic compressor with VFD, PMSM, full falling-�lm evaporation, etc.

Less maintenance: less moving parts, oil-free and intelligent control.

Environmentally friendly: less refrigerant charge and lower noise.

Midea Commercial Air Conditioner stands on the frontier of intelligent and e�ective technological development on the path to technology and product innovation. By building an internationalized R&D team, we have overcome various technical bottlenecks and integrated industry’s top technologies, including magnetic bearings, permanent magnetic synchronous motors, oil-free and full falling �lm evaporation. The industry and users have responded positively to these technologies as applied to our new magnetic centrifugal chiller.

Contents

04 Overview/

Features06/

Dimension14/

Operating and Control System

18/

05 Unit member/

Speci�cation13/

Options/Accessories

17/

Reference Projects

19/

Uni

t Mem

ber

05 06

Unit Member

Full falling f ilm evaporator (patented)

Economizer Control panel

Starter panel

Condenserwith integral sub-cooler

FeaturesEnergy Saving

6% higher efficiency than single-stage compression.

Lower speed and higher reliability.

Two-stage compressor

Condenser

Economizer

Evaporator

Impellers

Two-stage compressing

Motor efficiency exceeds 95%, with the highest efficiency of up to 97%.

High power density and compact size.

The motor is cooled by refrigerant, high efficiency and long service life.

High-speed permanent magnet motor

Adopting magnetic bearing without the need for lubrication. The refrigerating system can realize 100% oil free

operation to eliminate the heat transfer loss resulting from lubricating oil.

Heat transfer optimization through oil-free design

00 1 2 3 4 5 6 7 8

(% Oil)

(% Energy loss)

2

4

6

8

10

12

14

16

3.5% oil content=8% capacity reduced

AHRI data indicates that when the lubricating oil amount of the centrifugal chiller evaporator reaches 3.5%, COP will reduce by more than 8%.

Year-by-year operation comparison between the Magnetic and common model.

(Operating life: Y)

(% Capacity)

30%

0 1 2 3 4 5 76 8 9 10

50%

90%

70%

110%

The efficiency of the chiller containing oil will

decreased with increased running time.

Magnetic

Common model

Feat

ures

Magnetic compressorwith integral VFD

Feat

ures

Feat

ures

07 08

2A

400A

The high power factor eliminates the need for a power factor connection capacitor.

0.95 power factor

The rotor levitates in the non-contact magnetic bearing when the unit starts. The starting torque is small, a smooth starting

process becomes possible in combination with the optimum control of soft start and VFD. The starting current of a single

compressor is only 2A, which has no impact on the grid.

Compare a 700RT magnetic centrifugal chiller with a typical centrifugal chiller. The system can help customers save 45% per year.

Given the system’s service life, OPEX savings making investing in a magnetic centrifugal chiller system worthwhile.

Zero in-rush current Energy cost comparison

Input values

Based on IPLV

AHRI

700

4000

0.0813

Standard

Capacity (RT)

Operating Hrs

kW/h Rate ($)

Model ACL(AHRI) IPLV Operating Cost ($)

406 11.23 41338

745266.229406

CCWD700HV

CCWE700H

Star-delta start

Magnetic start

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

20

Chiller load(%)

Pow

er fa

ctor

10090807060504030

Chiller with inverter drive

Constant speed chiller without power factor correction capacitor

0

20000

40000

60000

80000

CCWD700HV CCWE700H

APPROXIMATE ANNUAL COST

reduced45%

09 10

Feat

ures

Feat

ures

3-Phase Mains 380-480VAC

50/60Hz

Line Reactor Recti�erDC Link

Capacitors IGBT Motor

DC Bus+

+300V

-300V

DC Bus-

-300V

+300VIGBT

ControlSCR

Control

Soft Start Controller

Motor/Bearing Controller

High-Voltage DC-DC Converter

Magnetic compressor

Technology leading

Pressure and temperature sensor

Motor and bearing control

Two-stage centrifugal compression

Inlet guide vane

Soft starter

Permanent magnetic synchronous motor

Integral VFD

High efficiency direct-drive technology

No acceleration gear and transmission loss, higher efficiency.

Simpler transmission system, less moving parts, higher reliability.

Magnetic technology is combined to significantly reduces the running noise.

Digital control

The magnetic compressor uses the integral variable frequency drive and soft starter.

VFD+IGV regulation, chiller capacity range can be 10-100%.

Lower in-rush current.

Intelligent control to avoid surge and choke points.

First created the full falling film evaporator and adopted spray technology to achieve film evaporation on the surface of the

heat exchange tube, greatly increasing overall heat transfer efficiency and reducing refrigerant charge by up to 40%.

The patented refrigerant distributor can improve the homogeneity of the liquid to avoid drying, fully showcasing the

performance of the heat exchange tube and increasing unit efficiency.

Full Falling Film Evaporating Technology

40% reduction in refrigerant charge

Flooded type Falling �lm Midea full falling f ilm

Patent No: 201210414053.9; 201220552298.

Full falling �lm reduced refrigerant charge by 40%

compared with the �ooded type

Falling �lm reduced refrigerant charge by 25% compared

with the �ooded type

Almost zero liquid level

Magnetic compressor is a miniaturized, highly innovative compressor with magnetic bearing, VFD and permanent magnetic

synchronous motor technologies.

Realizes oil-free, effective and safe operations.

Flash refrigerant vapor

From condenser

EXV

To evaporator

Fixed ori�ce

Advanced throttling technology

Adopts the throttle method of Fixed orifice+EXV:

Precise liquid level control for the best performance of the condenser and evaporator.

Fast response, avoids hot gas bypass, and yields higher efficiency in part loads.

Energy saving and reliable.

11 12

Feat

ures

Feat

ures

Less moving parts

Less maintenance

Power outage protection

Each compressor has four 8,000μF capacitors for energy storage and to filter DC voltage fluctuations. If a power failure

occurs, the capacitors provide power continuity to the bearings to keep the shaft levitated, allowing the motor to turn

into a generator and power itself down to a stop. Extended service life tests have confirmed the system’s remarkable

durability.

Intelligent surge controlReal-time monitoring of the compressor’s running status, adjusts the compressor speed and inlet guide vane opening to

ensure safety and high efficiency.

Magnetic bearing guarantees total levitating of the rotor during operation. No contact between the bearing and rotor

means no friction or structural vibtation.

The motor directly drives the rotor. The compressor has one moving component and the system does not require an oil

supply system or oil recovery system, greatly reducing unit parts, reducing fault points, and increasing reliability.

Two-stage compression of impeller

Position sensor Position sensor Thrust bearing

Rotor

Solenoid coil

Front bearing Rear bearingDC motor

No gear drive No mechanical bearing No lubrication system

Environmentally friendlyQuieter operation

No physical contact between moving metal parts, very quiet, and low vibration levels.

With reference to AHRI standard 575, sound pressure ratings are as low as 78dB(A). That makes it ideal for

sound-sensitive environments such as schools, performance halls, museums, condos and libraries.

LEED

Zero-ozone depletion R134a refrigerant, green, and has no elimination cycle.

Full falling-film technology reduces refrigerant charge by up to 40%, which enables you to

qualify for maximum Leadership in Energy and Environmental Design (LEED) points for

Enhanced Refrigerant Management. And with chiller’ s high efficiency, you could also earn

additional points for the Optimize Energy Performance (EAc1) credit.

Less maintenance

No oil system, no need for regular maintenance. Reduced maintenance procedures by 95%.

Modular design of the compressor where all parts are universal, plug and play, and easy to maintain.

Comparison between various centrifugal chillers’ maintenance tasks.

No. R123 chiller R134a chiller

1 Once a year Once every three years

2 Once a year Once a year

3 4 times a year 4 times a year

4 Once a week Once a week

5 Once a month Once a month


7 Once every three years Once every three years

8 Once every three years Once every three years



11 Once a week No

12

Maintenance tasks

Motor winding check

Oil heater check

Oil pump insulation check

Compressor vibration test

Oil filter pressure drop detect

Oil quality check

Oil pump pressure detect

Oil filter change

Oil change

Contactor and overload setting check

Refrigerant clearness check

Refrigerant filter change 4 times a year No

Magnetic centrifugal chiller (oil-free)

No

No

No

No

No

No

No

No

No

No

No

No

50

87

150150

140

160

20

40

60

80

100

120

0IndoorNoise dB(A) Magnetic Typical centrifugal chiller Airplane takeof f

78

Spec

i�ca

tions

13 14

Dim

ensi

ons

Length A Width B Height CModel

Dimensions Location dimension of the connecting pipe Maintenance space

mm

3500

3500

3500

1180

1180

1180

2075

2075

2075

335

335

335

635

635

635

1045

1045

1045

1395

1395

1395

368

368

368

/

/

/

3500

3500

3500

1200

1200

1200

1200

1200

1200

DN200

DN200

DN200

DN200

DN200

DN200

1500

1500

1500

mm mm mm mm mm mm mm mm mm mm mm mm

D E F G H M I J K L

CCWD250HV

CCWD300HV

CCWD350HV

Diameter of the connecting pipe for evaporator

Diameter of the connecting pipe for condenser

mm

2500

2500

1180

1180

2075

2075

355

355

615

615

1030

1030

1410

1410

368

368

/

/

2500

2500

1200

1200

1200

1200

DN150

DN150

DN150

DN150

1500

1500

mm mm mm mm mm mm mm mm mm mm mm mm

Dimensions Location dimension of the connecting pipe Maintenance space Diameter of the connecting pipe for evaporator


Length A Width BModel Height C D E F G H M I J K L

CCWD150HV

CCWD200HV

DimensionSpeci�cation

Pipe drawing space I

Chilled water outlet

Space L on the top of the unit

Chilled water inlet

Cooling water outlet

Cooling water inlet

Operation and maintenancespace on the left

Operation and maintenance space on the right

C

G

FED

JHB

KA

Single-compressor unit

Two-compressor unit




Chilled water inlet


Cooling water inlet

Operation andmaintenance

space on the left

AK

BH

D

J

EF

F2

v

G

C

Operation andmaintenance space

on the right

Note:

(1) Performance and efficiency are based on AHRI 550/590-2015. Evaporator conditions: water outlet=6.67°C, flow rate per capacity=0.1550m3/h-kW, fouling factor=0.0176m2. °C/kW;

Condenser conditions: water inlet=29.44°C, flow rate per capacity=0.1938m3/h-kW, fouling factor=0.0440m2. °C/kW.

(2) The design's max working pressure for both the evaporator and condenser are 1.0MPa, but higher pressure can be customized if required.

(3) As a result of the continuous improvement of the product, the above parameters may be changed, please refer to the product nameplate and in-kind.

150 200 250 300 350 400 450 500 550 600 650 700

150 190 250 300 350 400 450 500 550 600 650 700

527.4 668.0 879.0 1055 1231 1406 1582 1758 1934 2110 2285 2461

45 57 76 91 106 121 136 151 166 181 197 212

Power input kW 90.81 111.7 145.3 178.8 204.8 229.2 266.5 291.2 305.9 342.3 367.8 391.6

COP

IPLV

kW/kW

kW/kW

5.808 5.978 6.051 5.900 6.012 6.134 5.937 6.037 6.322 6.164 6.213 6.285

10.3 10.7 10.14 10.32 10.69 10.46 10.49 10.69 10.82 10.84 11.01 11.23

Conf igured power kW 120 126 240 240 252 360 360 380 480 480 505 505

Chilled water f low

Cooling water f low

82 103.5 136 164 191 218 245 272 300 327 354 382

Chilled water pressure drop kPa 72.8 68.6 44.9 47.2 48.1 72.7 75.5 76.7 47.4 48.5 49.4 51.4

2 2 2 2 2 2 2 2 2 2 2 2

DN150 DN150 DN200 DN200 DN200 DN200 DN200 DN200 DN250 DN250 DN250 DN250

m3/h

m3/h

102 129.5 170 204 238 272 307 341 375 409 443 477

Cooling water pressure drop kPa 31.7 29.0 48.2 49.6 50.9 77.3 81.2 82.6 55.8 55.9 57.0 58.0

2 2 2 2 2 2 2 2 2 2 2 2

DN150 DN150 DN200 DN200 DN200 DN200 DN200 DN200 DN250 DN250 DN250 DN250

Shipping weight kg 2565 2685 3235 3375 3465 4160 4300 4440 6730 6870 6990 7110

Running weight kg 2685 2805 3355 3495 3585 4340 4480 4620 6930 7070 7190 7310

Unit length mm 2500 2500 3500 3500 3500 4000 4000 4000 4100 4100 4100 4100

Unit width mm 1180 1180 1180 1180 1180 1380 1380 1380 2500 2500 2500 2500

Unit height mm 2075 2075 2075 2075 2075 2155 2155 2155 2150 2150 2150 2150

Packing length mm 2500 2500 3500 3500 3500 4000 4000 4000 4100 4100 4100 4100

Packing width mm 1650 1650 1650 1650 1650 1850 1850 1850 2500 2500 2500 2500

Packing height mm 2225 2225 2225 2225 2225 2305 2305 2305 2300 2300 2300 2300

Evaporator

Compressor

Efficiency

Model(CCWD***HV)

Dimension

Weight

Condenser

Cooling capacity

Connection type

Pass

Connection type

Pass

Power supply

Starting method

Motor cooled by

RT

Victaulic

Water pipe connection

kW

104 kcal/h

380/400V-3Ph-50/60Hz

VFD

Refrigerant

Victaulic

Water pipe connection

15 16

Dim

ensi

ons

Dim

ensi

ons

Model

Dimensions

P

mm

2970

2970

2970

2970

Q

mm

860

860

860

860

R

mm

200

200

200

200

S

mm

50

50

50

50

T

mm

2680

2680

2680

2680

W

mm

3670

3670

3670

3670

V

mm

350

350

350

350

U

mm

860

860

860

860

X

mm

260

260

260

260

CCWD550HV

CCWD600HV

CCWD650HV

CCWD700HV

Model

Dimensions

P

mm

1970

1970

2970

2970

2970

3470

3470

3470

Q

mm

860

860

860

860

860

990

990

990

R

mm

200

200

200

200

200

200

200

200

S

mm

50

50

50

50

50

50

50

50

T

mm

1560

1560

1560

1560

1560

1690

1690

1690

W

mm

2670

2670

3670

3670

3670

4170

4170

4170

V

mm

350

350

350

350

350

350

350

350

CCWD150HV

CCWD200HV

CCWD250HV

CCWD300HV

CCWD350HV

CCWD400HV

CCWD450HV

CCWD500HV

mm

4100

4100

4100

2500

2500

2500

2150

2150

2150

485

485

485

1220

1220

1220

368

368

368

3500

3500

3500

DN250

DN250

DN250

DN250

DN250

DN250

1500

1500

1500

4100 2500 2150 485 1220 368

1488

1488

1488

1488 3500 DN250 DN2501500

mm mm mm mm mm mm mm mm

D E

485

485

485

1220

1220

1220

485 1220

mm mm

F G H M I

1200

1200

1200

1200

1200

1200

1200 1200

mm mm

J K L

CCWD550HV

CCWD600HV

CCWD650HV

CCWD700HV

Model

Dimensions Maintenance Space

Length A Width B

Location dimension of the connecting pipe

Height C

Diameter of the connecting pipe for evaporator


mm

4000

4000

4000

1380

1380

1380

2155

2155

2155

315

315

315

665

665

665

395

395

395

/

/

/

4000

4000

4000

DN200

DN200

DN200

DN200

DN200

DN200

1500

1500

1500

mm mm mm mm mm mm mm mm mm

D E

1080

1080

1080

1430

1430

1430

mm mm

F G H M I

1200

1200

1200

1200

1200

1200

mm

J K L

CCWD400HV

CCWD450HV

CCWD500HV

Model

Dimensions Maintenance space

Length A Width B

Location dimension of the connecting pipe Diameter of the connecting pipe for evaporator


Height C

Basic Layout of UnitThree-compressor

T

Foot plate

Cement base

Drain ditch

Basic wiring diagram1:25

Rubber tie-plate ( 15)300X300Pedestal steel plate 20x(W)300x(L)300

100

200x200

Grouting after the unit is in position

100

350

450

80

Installation drawing

Installation drawing

B-B

45°

100

200x200 Grouting after the unit is in position

Unit baseboard

Prepared by users

100

350 45

0

80

C-C

45°

500

200

B

C

S

RP

W

B

UXT

QV

Pedestal steel plate 20x(W)300x(L)300Rubber tie-plate ( 15)300x300

550

200

100

200x200

Grouting after the unit is in position

100

350 45

0

80BB

Q

P R

C

Foot plate

Cement base

Drain ditch

C

S

W

V

Basic wiring diagram1:25

Installation drawingB-B

100

200x200 Grouting after the unit is in position

Unit baseboard

Prepared by users

100

350 45

0

80

Installation drawingC-C

45°

45°

C

G

FED

JHK

B


Chilled water inlet


Cooling water inlet


Pipe drawing space IA

Four-compressor

Basic layout of four-compressor unit

Basic layouts for single-, two- and three-compressor units


on the left


on the right


J

Chilled water inlet Chilled water outlet


Cooling water inlet

C

GF

ED

M

B

HK


A


on the left


on the right

17 18

Ope

ratin

g an

d Co

ntro

l Sys

tem

Opt

ions

/Acc

esso

ries

Accessories Optional

Power supply50Hz: 400V

60Hz: 380V, 400V, 460V, 575V

Water inlet/outlet connection type

High pressure water boxes 1.6MPa, 2.0MPa

Water boxes Marine

Pressure vessel pass 1 or 3

Chiller sequence management (Chiller Plant Manager) ×

×

Chiller vibration isolator Spring

Heat recovery

Chilled water Delta T

Centrifugal heat pump

Water storage

Communication protocol

Hot gas bypass

Flow switch

Witness performance testing

Standard

380V-3Ph-50Hz

Victaulic(150-500RT), Flange(550-700RT)

1.0MPa

Compact

2

√

Rubber

×

5°C

×

×

Modbus-RTU (RS485)

×

×Differential pressure

×

Full recovery

6°C~11°C

Hot water temperature up to 45°C

√

BACnet

√

√

Options/Accessories

Interface display

10-inch true color graphic display interface

Touch screen

Operating status

Multi-level passwords

Operation parameters

Pre-alarm/alarm display and record

Interlocking control

Pre-operation/post-operation of water pump Running current of the compressor is high/too high Start time too long

Water-break of evaporator and condenser

Frost protection

Motor fault

Bearing fault

Running current of the compressor is too low

Evaporation pressure low/too low (evaporator)

Condensing pressure high/too high (condenser)

Compressor fault

Interlocking control on the starter panel

Compressor anti-surge interlocking

Safety checks before startup

Pre-alarm of interlocking

Safety protection

Operation control

User-set water leaving temperature

Auto loading/unloading

Pause function

Independent start/stop function

Timer

Inquiry of unit details

Operating and Control System

The perfect operating and control system of centrifugal chiller integrates a series of control and monitoring functions including

intelligent operations, safety protection and interlocking control to achieve reliable start, high efficiency operations and internal

control of chiller.

-Intelligent color touch screen

19 20

Refe

renc

e Pr

ojec

ts

Refe

renc

e Pr

ojec

ts

Reference Projects

Country:

City:

Total capacity:

HVAC:

Shenzhen Metro

China

Shenzhen

18,528 RT

Centrifugal chiller (Oil-free+high efficiency), Water-cooled screw chiller

Country:

City:

Total capacity:

HVAC:

KPJ GROUP CHILLER RETROFIT PROJECT

Malaysia

Kuala Lumpur

800 RT

Centrifugal chiller (Oil-free)

Country:

City:

Total capacity:

HVAC:

South China City

China

Zhengzhou

2,250 RT


Country:

City:

Total capacity:

HVAC:

Guangdong Dongguan Qipai Company

China

Dongguan

1,000 RT


commercial air conditioners 2018/2019 - midea aircon€¦ · certi˜ed in accordance with the ahri...

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