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Evaporation Condenser

YANTAI CITY AOWEI REFRIGERATION EQUIPMENTS CO.,LTD.

Heat Exchange Equipments

Safety and environmental protection,pay attention to life,care for health.

Aowei refrigeration equipment Co., Ltd is located in the coastal city of Yantai, which is one of the earliest private

enterprises established in the middle of 1980 s .The first generation founders with courage and wisdom have built

the company which is mainly engaged in refrigeration engineering and installation accessories. After several

decades of development, the company has grown up to refrigeration equipment industry chain leader under the

belief of self-improvement and social service. After taking over by the second generation owners, they devoted

himself to building a high-tech enterprise center with international competition inspirit. Now the company not only

have four professional refrigeration equipment manufacturing plant engineering company and trading company, but

also building a technology Research Institute where include researching and developing compressors and

compressor systems integration, cold chain integration mainly in frozen equipment.

Review the past and look forward to the future, greet the new age of development. Aowei company devote himself

to manufacturing matching with national standards and industry standard products as the company lifeline, and

always putting the customer's benefit as themselves. R&D and produce the products in conformity with the

international standards.

The Company Introduction

Aowei obey the national development strategy to manufacture products with advantages of \"green, low-carbon,

environmental protection,sustainable development\".All products and systems are intelligent, digital and realized

unmanned system. Developed a new generation series of screw refrigeration compressor successfully, the

structure and the type of line parameters have a big breakthrough. Especially for CO2 compressor and system,

more nearly to realize \"environmental protection, safe, and efficient\". The company is committed to one-stop

overall cold chain solutions and value-added services. Represented by the integrated carton quick freezer and

spiral freezer machine already get more than 110 patents. The compressor test platform with experimental device

and air cooler test platform laid a good foundation for the company to the higher level.

According to country laws and regulations, all the products of our company have already got the corresponding

certificates and licence.

Aowei will continue insisting the principle of \"brand strategy, well-designed\" to produce high -tech and customer

satisfactory products. Aowei is willing to join hands with all friends at home and abroad and create a bright future.

Model Explanation

SZNXⅡ - 600 A

Normal conditions heat removal (KW)

The vapor evaporate and take away the heat of the refrigerant. During operation, the cooling water

is pumped up to the nozzle on the top of condenser and evenly spraying to the outside surface of

condensing tubes and forming a water layer. The high temperature refrigerant gas come into the

condensing coils from top and condenses by cooling water into liquid and flow out from bottom. Some

water absorb the heat and become steam, the rest water drop to the water tank for re-circulation,

meanwhile, the fans on the top make wind with speed of 3～5 m/s to speed up the evaporation of the

water layer outside the surface of condensing tubes and also cool the dropping water which will get

back to spay onto the heat-exchange tubes. The steam is blown out by the blower and the blobs mixed

to the steam remain on the dehydrator. The floating valve in the tank control water supplement into the

tank automatically.

Working principle

01 Refrigerant code: A-R717(optional) F-R404A/R507A

Design code: II - Second Generation; Others no marks.

Series code: SZNX - Double effect evaporation condenser

ZNX - Evaporation condenser

GZN - Efficient evaporation condenser

Evaporation Condenser

Structure diagram

SZNX series evaporation condenser

Hot & wet air Fresh air

Fresh air

Water spray system

Condensing coil

Air guider

Water tank Water circulation pump

Dehydrator

Heat-exchange layer

Maintain passage

Axial flow fan

ZNX series evaporation condenser

Condensing coil

Dehydrator

Axial flow fan

Hot & wet air

Water spray system

Air guider

Fresh air Fresh air

Water tank

Water circulation pump

02

Construction features

We design the machine with advantages of novelty, unique and reasonable.

The condensation tubes and the interior metal components inside are hot-dipped galvanized (good

anti-corrosion and long lifetime).

Special tube arrangement makes the coil much smarter and more coil area in a fixed space to

enhance heat-exchange.

Patented dehydrator is used to reduce the water consumption.

The water spray nozzle is anti-blocked type to ensure even spraying.

The axial fans are low noise and large air-flow. The blades are made of aluminum alloy and the motor

is damp-proof.

Heat removal coefficient of R507A / R134 = Heat removal coefficient of R717 × 1.12(Except GZN series).

30

32

34

35

36

38

40

42

44

20

1.53

1.34

1.1

1.02

0.96

0.81

0.71

0.66

0.61

21

1.88

1.46

1.18

1.06

1.01

0.86

0.75

0.68

0.63

22

2.13

1.53

1.28

1.13

1.08

0.9

0.78

0.71

0.62

23

2.26

1.67

1.32

1.2

1.12

0.96

0.86

0.75

0.64

24

2.48

1.85

1.5

1.24

1.19

1.01

0.92

0.77

0.66

25

2.97

2.08

1.68

1.35

1.26

1.08

0.96

0.82

0.69

26

-

1.87

1.53

1.35

1.12

1.01

0.84

0.71

27

-

2.1

1.69

1.53

1.2

1.08

0.86

0.75

28

-

1.87

1.69

1.34

1.12

0.9

0.78

29

-

2.15

1.85

1.48

1.2

0.96

0.86

30

-

2.49

2.14

1.57

1.34

1.01

0.92

Condensing

temp. ℃

Wet ball temp. ℃

Coefficient table of heat removal - Ammonia (R717)

Advantages of evaporation condenser

● Power-saving: The condensing temperature of evaporation condenser is decided by wet ball

temperature. Normally, the wet ball temperature is 6～8℃ lower than ambient temperature. So we

designed the structure of the evaporation condenser according to this to lower the condensing

temperature and system pressure; so that to increase the refrigerating capacity of the compressor and

reduce the power consumption. The power of water pump is only 1/3～1/4 compared with other watercooled condenser. According to the calculation and operation, the power consumption of evaporation

condenser is 15% lower than water-cooled condenser.

●Water-saving: the evaporation condenser use water evaporation to take away the heat -1 liter of

water evaporated will take away 670W of heat. But water-cooled system use water heating-up to take

away the heat -1 liter of water only can take away 4～5W of heat. Therefore, to remove same volume of

heat the water-cooled condenser needs more water (we need to prepare large water tank, cooling

tower and cooling tubes which will bring more chance for water losing). Contrarily the evaporation

condenser needs less water and meanwhile the dehydrator of the machine has higher efficiency of

water reclaim. The water loss of evaporation condenser is only 10% of water-cooled condenser.

● Space-saving, easy to install and short duration.The evaporation condenser is an integrated

machine include condensing coil, cooling tower, water pond and water pump, which can be put on the

top of the roof. The piping system is simple and there is no other accessory of water system. It will

reduce the installation material, construction period and installation cost.

●Low maintenance cost. If we use evaporation condenser, the condensing temperature will be low,

what's more, the exhaust pressure, exhaust temperature and the temperature of lubrication oil are

also low. So the machine is working under a perfect condition, and the lifetime of the machine will be

longer and the running of the machine is more smoothly so that to reduce the maintenance cost.

03

04

SZNXⅡ-300

SZNXⅡ-350

SZNXⅡ-400

SZNXⅡ-450

SZNXⅡ-500

SZNXⅡ-550

SZNXⅡ-600

SZNXⅡ-650

SZNXⅡ-700

SZNXⅡ-800

SZNXⅡ-900

SZNXⅡ-1000

SZNXⅡ-1100

SZNXⅡ-1200

SZNXⅡ-1300

SZNXⅡ-1400

SZNXⅡ-1500

305

356

405

455

506

555

605

653

706

805

906

1005

1109

1206

1304

1407

1503

2460

3000

3920

5000

5600

2000

2070

2200

2140

2200

2110

2200

2170

2070

2200

2070

2170

2200

3715

3940

3715

3940

4005

4240

4295

4320

4570

2550

2810

2815

2835

1035

1260

1035

1260

1065

1295

1344

1583

2360

2520

2670

2850

3050

3160

3300

4000

4120

4400

5060

5320

5720

5955

6160

6480

6600

3500

3750

4000

4150

4500

4600

4750

5800

5950

6300

7200

7550

8350

8935

9200

9720

9900

60000

90000

120000

150000

2.2×2

2.2×3

2.2×4

2.2×6

18.1

22.2

36.1

47.2

1.5

2.2

3.0

4.0

35

40

45

50

55

61

67

72

83

88

100

110

122

134

144

154

166

DN100

DN125

DN100×2

DN65

DN65×2

SZNX II series evaporation condenser

Suitable for environment friendly refrigerants (such as R717、 R404A、 R507A, etc.)

The tube is oval type which is good for refrigerant flowing inside and good for water layer formatting

on the tube surface so that to enhance heat-exchange.

There is polyethylene heat exchange layer under the coil. Fresh cool air gets into the machine and

cools both the coil and the layer. On the way the water dropping to the water tank, the layer will cool

the water again to enhance the heat exchange result.

The air and water get in to the machine in same direction which will effectively speed up water flow

and reduce the filth appear on the condensing tubes.

Smart structure and all the models are easy to be transported in container (half-half or break up)

L W H h1 h2

Model

Normal

conditions

heat

exchange

kW

Weight(kg) Fan Water pump

Transport Air flow

3

(m /h)

Power

(kW)

Water

volume

3

(m /h)

Power

(kW)

Tube connection

dimension

(mm)

Operating Vapour in Liquid out

Outline dimension(mm)

L W

h2 h1

H

1

2

4

6

5

3

1. Refrigerant in 2. Refrigerant out 3. water supply in DN25 4. Maintain access 5. Overflow DN40 6. sewage outfall DN40

Evaporation Condenser

Ammonia

filled in

(kg)

W L

H

1

2

5

3

4

ZNX II series evaporation condenser

ZN XⅡ-320

ZN XⅡ-400

ZN XⅡ-480

ZN XⅡ-560

ZN XⅡ-640

ZN XⅡ-720

ZN XⅡ-800

ZN XⅡ-880

ZN XⅡ-960

ZN XⅡ-1100

ZN XⅡ-1200

ZN XⅡ-1300

ZN XⅡ-1400

ZN XⅡ-1500

ZN XⅡ-1600

ZN XⅡ-1700

ZN XⅡ-1800

322

402

481

565

645

722

805

884

962

1105

1203

1304

1406

1505

1603

1701

1804

2120

2630

3230

4240

5000

5600

1275

1560

1500

1770

2000

2230

2040

2230

2040

2120

2230

2120

2230

2070

2150

2070

2200

2980

3030

3160

3390

3210

3330

3560

3700

1160

1210

1260

1310

1415

1501

1680

2000

2380

2680

3200

3560

3930

4140

4400

5130

5550

5980

6440

6900

7520

7910

8640

2480

3060

3400

3800

4400

5000

5900

6200

6710

7350

7760

8370

8500

9250

10500

11050

11700

30000

50000

60000

75000

90000

120000

150000

2.2

2.2×2

5.5

2.2×3

4×2

5.5×2

9.4

12.7

18.1

22.2

36.1

47.2

0.75

1.1

1.5

2.2

3.0

4.0

50

62

75

87

100

106

114

124

136

156

168

184

193

212

226

240

252

DN100

DN80×2

DN100×2

DN125×2

DN65

DN65×2

1. Refrigerant in 2. Refrigerant out 3. Overflow DN40 sewage outfall DN40 water supply in DN25 4. 5.

h1

h2

L W H h1 h2

Refrigerant

charge

(kg)

1035

1065

1296

1065

1105

1344

Reasonable design all meet the conditions of container transport, simple and convenient.

The set of heat exchange tube, oval high-frequency welded pipe and the flow of the liquid in the pipe

and the pipe outer surface form a uniform water film, enhanced heat transfer effect.

05 Model

Normal

conditions

heat

exchange

(kW)

Weight(kg) Fan Water pump

Transport Air flow

3

(m /h)

Power

(kW)

Water

volume

3

(m /h)

Power

(kW)

Tube connection

dimension

(mm)

Operating Vapour in Liquid out

Outline dimension(mm)

Vapour in

06

GZN series evaporation condenser

GZN-50

GZN-70

GZN-90

GZN-110

GZN-130

GZN-150

GZN-170

GZN-190

GZN-210

GZN-230

GZN-250

GZN-280

GZN-300

GZN-350

51

70

91

112

132

154

172

191

215

235

252

285

302

352

840

1200

1380

1670

1980

2290

2570

2330

2570

2770

1865

2050

2220

2540

795

1395

1950

2060

2100

990

1130

410

520

455

330

440

500

600

705

760

860

870

920

980

990

1050

1200

1340

550

720

830

1000

1180

1310

1490

1440

1550

1660

1810

1960

2190

2480

9000

15000

18000

22200

22500

27000

37000

46900

1.1

0.75×2

1.1×2

0.75×3

1.1×3

1.5×2

2.2×2

34

65

0.36

0.36×2

1.1

1.5

2.2

3

9

12

16

20

23

27

31

34

38

41

45

51

54

63

1

1 / \"8

1

1 / \"×2 8

1

1 / \"×2 8

1

1 / \"×2 8

1

1 / \"×3 8

1

1 / \"×4 8

1

1 / \"×4 8

1

1 / \"×4 8

1

1 / \"×4 8

1

1 / \"×4 8

3

1 / \"×3 8

3

1 / \"×3 8

3

1 / \"×4 8

3

1 / \"×4 8

7

/ \"8

7

/ \"×2 8

7

/ \"×2 8

7

/ \"×2 8

7

/ \"×3 8

7

/ \"×4 8

7

/ \"×4 8

7

/ \"×4 8

7

/ \"×4 8

7

/ \"×4 8

1

1 / \"×3 8

1

1 / \"×3 8

1

1 / \"×4 8

1

1 / \"×4 8

L W H h1 h2

Water pump

Water

volume

3

(m /h)

W

h1 h2

H

W

3

4

L

1

2

Suitable for environment friendly refrigerants (such as R404A、R507A, etc.)

The tube is made of copper which is clean and good at keeping clean; Special internal and external

dipteral type structure has nice heat-exchange result.

Smart size, light weight, nice heat-exchange result and easy to transport.

Smart structure and all the models are easy to be transported in container (half-half or break up)

1. Sewage outfall DN20 2. Water supply in DN15 3. Refrigerant in 4. Refrigerant out

SZNX series evaporation condenser

The tube is oval type which is good for refrigerant flowing inside and good for water layer formatting on the

tube surface so that to enhance heat-exchange.

Suitable for environment friendly refrigerants (such as R717、 R404A、 R507A, etc.)

There is polyethylene heat exchange layer under the coil. Fresh cool air gets into the machine and cools

both the coil and the layer. On the way the water dropping to the water tank, the polyethylene layer will cool

the water again to enhance the heat exchange result.

The air and water get in to the machine in same direction which will effectively speed up water flow and

reduce the filth appear on the condensing tubes.

Note: the \"nominal capacity\" as the refrigerant R507A, condensation temperature 35 ℃environment, on average, the biggest

change heat when the wet bulb temperature of 25.5 ℃.Selection should pay attention to the environment, on average, wet bulb

temperature increase 1 ℃, the selected model should be increased 15%.

Refrigerant

charge

(kg)

Model

Normal

conditions

heat

exchange

kW

Weight(kg) Fan

Transport Air flow

3

(m /h)

Power

(kW)

Power

(kW)

Tube connection

dimension

(mm)

Operating Vapour in Liquid out

Outline dimension(mm)

Evaporation Condenser

W L W

h2 h1

H

1

2

4

6

5

3

1. Refrigerant in 2. Refrigerant out 3. water supply in DN25 4. Maintain access 5. Overflow DN40 6. sewage outfall DN40

SZNX-350

SZNX-380

SZNX-410

SZNX-450

SZNX-500

SZNX-550

SZNX-600

SZNX-650

SZNX-700

SZNX-760

SZNX-820

SZNX-880

SZNX-940

SZNX-1000

SZNX-1040

SZNX-1100

SZNX-1160

SZNX-1200

SZNX-1280

SZNX-1380

SZNX-1460

SZNX-1520

SZNX-1600

SZNX-1680

SZNX-1760

SZNX-1800

SZNX-1860

SZNX-1920

SZNX-2000

SZNX-2100

SZNX-2200

352

385

412

452

506

555

601

652

705

762

826

888

942

1006

1045

1102

1163

1206

1288

1382

1466

1522

1606

1688

1765

1806

1862

1926

2008

2106

2208

2460

3000

3920

4240

5000

5600

2200

2600

2800

3000

3100

3500

3495

3720

3495

3720

3945

3975

4210

4440

4210

4440

4260

4500

4280

4520

2550

3010

3015

3035

810

1035

810

1035

1260

834

1065

1296

1065

1296

1105

1344

1105

1344

2540

2650

2740

2840

3540

3700

3810

3940

4520

4660

4780

4900

5050

5240

5360

5480

5590

5650

6020

6240

6380

6460

6600

7740

7960

8080

8270

8450

9080

9310

9540

1610

1700

1800

1900

2320

2460

2560

2680

3050

3180

3290

3410

3550

3680

3800

3920

4020

4080

4410

4600

4730

4800

4930

5460

5640

5760

5940

6090

6400

6610

6820

4

6×10

4

6×10

4

6×10

4

6×10

4

7.5×10

4

7.5×10

4

7.5×10

4

7.5×10

5

1.2×10

5

1.2×10

5

1.2×10

5

1.2×10

5

1.2×10

5

1.5×10

5

1.5×10

5

1.5×10

5

1.5×10

5

1.5×10

5

1.5×10

5

1.8×10

5

1.8×10

5

1.8×10

5

1.8×10

5

2.25×10

5

2.25×10

5

2.25×10

5

2.25×10

5

2.25×10

5

2.55×10

5

2.55×10

5

2.55×10

2.2×2

5.5

4×2

5.5×2

4×3

5.5×3

7.5×3

65

80

130

170

230

1.5

2.2

3.0

4.0

5.5

40

44

48

52

56

61

66

71

77

83

90

96

102

110

115

121

125

160

142

156

160

166

174

182

195

201

204

218

235

252

264

L W H h1 h2 Heaviest

section

3930

4030

4120

4240

5680

5860

5960

6090

7400

7560

7680

7800

7950

8460

8580

8710

8820

8900

9480

9590

9730

9820

9960

12600

12830

12960

13130

13300

14580

14860

15100

DN100

DN80×2

DN100×2

DN125×2

DN65

DN65×2

07 Water pump

Water

volume

3

(m /h)

Refrigerant

charge

(kg)

Model

Normal

conditions

heat

exchange

kW

Weight(kg) Fan

Transport Air flow

3

(m /h)

Power

(kW)

Power

(kW)

Tube connection dimension

(mm)

Operating Vapour in Liquid out

Outline dimension(mm)

08

ZNX series evaporation condenser

ZNX-320

ZNX-400

ZNX-480

ZNX-560

ZNX-600

ZNX-640

ZNX-720

ZNX-800

ZNX-900

ZNX-1000

ZNX-1200

ZNX-1400

ZNX-1500

ZNX-1600

ZNX-1800

ZNX-2000

ZNX-2200

ZNX-2300

ZNX-2400

ZNX-2500

ZNX-2600

ZNX-2800

ZNX-3000

322

402

481

565

606

646

722

806

881

1010

1202

1415

1510

1606

1808

2008

2208

2306

2406

2508

2600

2808

3006

2120

2630

3920

4140

4320

4590

5160

5730

6330

6580

5500

5730

5990

6410

6840

1275

1560

1500

1770

1885

2000

2230

2455

1885

2110

2455

2350

2900

2980

3030

3280

3450

3790

3840

3910

4010

4060

1160

1210

1310

1460

1526

1576

1646

1746

1796

1035

1065

1296

1680

2000

2380

2680

3000

3200

3560

3600

4100

4680

5390

6000

6500

7000

7500

8200

8900

9500

10300

10800

11500

12000

2480

3060

3400

3800

4200

4400

5000

5240

5560

6480

7260

8580

9000

9900

10350

12300

13350

14250

15000

15450

16200

17000

18200

4

3×10

4

5×10

4

5×10

4

6×10

4

6×10

4

6×10

4

7.5×10

4

7.5×10

4

9×10

4

9×10

5

1.2×10

5

1.2×10

5

1.2×10

5

1.5×10

5

1.5×10

5

1.8×10

5

1.8×10

5

2.0×10

5

2.25×10

5

2.25×10

5

2.25×10

5

2.4×10

5

2.4×10

2.2

2.2×2

5.5

2.2×3

4.0×2

5.5×2

4.0×3

4.0×4

5.5×3

4.0×4

34

46

65

80

130

170

230

130×2

170×2

0.75

1.1

1.5

2.2

3

4

5.5

3×2

4×2

50

62

75

87

93

100

106

114

124

146

168

195

211

222

235

255

275

298

320

347

371

384

405

L W H h1 h2

Water

volume

3

(m /h)

Suitable for environment friendly refrigerants (such as R717、 R404A、 R507A, etc.)

The tube is oval type which is good for refrigerant flowing inside and good for water layer formatting on the tube

surface so that to enhance heat-exchange.

D 100

DN100

DN80×2

DN100×2

DN100×4

DN100×6

DN100×4

DN100×6

D 65

DN65

DN65×2

DN65×4

DN65×6

DN65×4

DN65×6

ZNX-320~ZNX-1200 ZNX-1400~ZNX-3000

1. Refrigerant in 2. Refrigerant out 3. Overflow DN40 Sewage outfall DN40 5 Water supply in DN25 4. .

N N

Water pump

Refrigerant

charge

(kg)

Model

Normal

conditions

heat

exchange

kW

Weight(kg) Fan

Transport

Air flow

3

(m /h)

Power

(kW)

Tube connection

dimension

(mm)

Operating Vapour in Liquid out

Outline dimension(mm)

Power

(kW)

Evaporation Condenser

System management diagram

① Evaporation condenser

② Compressor

③ Cooling water pump

④ Underground water tank

Ball-cock

Ball valve

Butterfly valve

Check valve

Water flow direction in summer

Water flow direction in winter

Tap water

2、The volume of underground water tank should be more than total volumes that in the machine flume and

tubes.

3、The water return pipe of the compressor in the drawing I should be higher than the compressor. Water supply

pipe II could be put under ground. The height of valve F and its pipe should be lower than the pipe between

cooling pump and the compressor to ensure the water in the pipe being drained thoroughly in winter.

1、In winter make sure that the water in the cooling pump ③ and underground water tank ④ does not freeze.

2、In summer, the valves C, D, F and H should be closed, the rest valves should be opened.

3、In winter, close valves A, B, E and G, drain the water in the pipe between A-B and E-G from valve C and valve

D, open valve H. Before operation, start the cooling pump of the compressor first, and then start the spray pump

after the water in the tank is full. When the water pump is stopped, open value F to drain the water inside the tank

and pipeline to avoid water freezing inside. Before start the cooling water pump again, the value F must be

closed. In winter, the cooling water for the evaporation condenser and the compressor comes from the

underground tank. The value C could supply the consumed water.

1、This drawing is only an example. We could specially design for the user it according to conditions and actual

requirements.

In summer, water supply to the cooling pump ③ of the compressor comes from the water tank, and water level

inside the tank is controlled automatically by the ball-cock.

Attention

Explanation

1

2

3

2

A

E

B

C

F

D

H

G

4

09

10

High pressure vapor pipe

High pressure liquid pipe

Mixture gas pipe

Pressure equalizer

1、We suggest to use padding type oil separator for this system. If you want to use washing type oil separator,

please pay attention to the height. (Refer to the layout. Unit: mm)

2、The horizontal pipe between liquid out pipe and the receiver should have a grade of 1/50 along with

refrigerant direction.

3、Each vertical pipe for liquid out should have a U turn. For the height please refer to the drawing.

4、The distance between evaporation each condensers should be 1.5-2m.

Explanation

①

②

③

≥300

Connection diagram between evaporation condenser and high pressure system

A: Connect to exhaust main of air-cooler

B: Liquid-out pipe

C: Connect to gas inlet of air separator

① Washing type oil separator

② High pressure receiver

③ Evaporation condenser

Vapour in

Liquid out

Evaporation Condenser

Sales network

Since 1993, Aowei refrigeration equipments have been

sold to more than 20 provinces and municipalities in

China and also sold to Southeast Asia, Europe,

America, South Africa and others, total 30 countries and

regions.

We set up offices and after sales service center

all over China, and offer fastest technical

support and spare parts supply.

After sales service

Evaporation Condenser

2024.01Add:No. 199, Jinbu Street, Qinshui Industrial Zone, Muping district, Yantai, China.

Tel:86-535-3395800 3396796 FAX:86-535-3397996 After-sale service:86-535-3398887

http://www.aowid.com.cn E-mail:master@aowid.com.cn

Win-Win Cooperation Creating The Future Together

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