Layered heat sink series

High temperature type air cooled models, Upper lower layer air cooler condenser independent design, Large capacity, easy to install, easy maintenance, Applicable air compressor 50 ~ 400HP.

 

Two-stage counter and turbulent flow + fin-tube enhanced heat conduction patented technology. Especially be suitable for heavy load and high temperature environment.

There are two main characteristics of the “Enhanced heat conduction fin-tube heat exchanger”:

1) Two-stage counter and turbulent flow.

In the heat exchanger, the high-temperature air entering from the environment will exchange heat with the cold air that has flowed through the evaporator. There are also many guide plates in the middle, so that the cold and hot air flows in a "counter-flow" and "turbulent flow" way to enhance the heat exchange effect.

2) Multi arc-wings aluminum extrusion

The materials of the heat exchanger are all high heat-conduction coefficient, including high-density aluminum fins, high heat transfer coefficient coppers, and the other key innovation-- Multi arc-wings aluminum extrusion. The aluminum extrusion is placed in the copper tube, which can force the air to diverge and fully contact the copper tube. The aluminum extrusion can also transfer heat to the copper tube, increasing the heat exchange efficiency by 20%.

The promotion of heat exchange efficiency can bring more convenience and possibility.

1)     Overcome the limitation of environment temperature

First, the heat exchange efficiency becomes better, which means that the allowable inlet hot air temperature can be increased, and it can be used in a higher temperature environment. Currently, the applicable ambient temperature of our product can reach 45°C.

 

2)     Reduce purchase and use costs

When the outlet hot air can release more heat from the heat exchanger, the temperature entering the evaporator can be lowered so that it can reduce the load of the refrigerant compressor and reduce power consumption. Additionally, when the temperature of the hot air outlet decreases, it means that the same freezing capacity can process more flow of air. The processing capacity increase more 10% than before, so that the dryers can match the modern energy-saving and high-efficiency air compressors , and there is no need to buy a larger model. In this way, it can be helpful in terms of purchase, space utilization, electricity bills, and the maintenance costs in the future.

 

3)     Maintain the factory environment

The dry cooling air from the outlet of the evaporator, gets more temperature rise after passing through the enhanced heat exchanger, which increases the outlet temperature by 7°C compared to the previous machines. Therefore, the outlet is less dew condensation, and it can reduce corrosion to avoid pollute the factory environment.

The unique technology-- "specific gravity laminar flow separation method".

    Using the different physical properties of the fluid (air, water) and the design of pipe diameter , the Reynolds number in the pipe becomes a laminar flow state at low flow rate and does not mix with each other to achieve the best separation effect of condensed water and dry air.

Patented technology "dew point control protection" + perfect protection measures

Dew point control:
The precise automatic freezing capacity adjustment method (hot gas by-pass valvecondensing fan control), under the rated operation conditions, allows the dryer to maximize the freezing capacity at high load; and automatically adjusts capacity at low load. It can prevent ice blockage and maintain the best drying effect.
 
Perfect protection measures:

Using the compressor overload protection feature, when any conditions of temperature and current is tripped, the current sensor of the controller immediately senses the fault signal, which does make up for the lack of single-condition protection of general mechanical switches.

 

SD-075S~SD-400S System flow chart
Refrigeration systems
Code
Name
01
Refrigerant compressor
02
Condenser
03
Capillary
04
Evaporator
05
Hot gas bypass valve
06
Low pressure gauge
07
High pressure gauge
08
Filter dryer
09
Dual Pressure Controls
10
Intelligent control and protection board
Air system
Code
Name
31
FrontCoolers
Ambient air VS Compressed air
32
Precooler
Compressed air VS Compressed air
33
Evaporator
Refrigerant VS Compressed air
34
Automatic drainage
35
Outlet pressure gauge

Product Specifications

Model
SD-075S
SD-100S
SD-150S
SD-200S
SD-250S
SD-300S
SD-400S
Air flow capacity  (Nm³/min)
9.0~12
12~16
18~23
24~31
28~36
36~47
48~62
Scope of use
Pressure dew point (℃)
2~10 ℃
Inlet temperature (℃)
5~75 ℃
Ambient temperature(℃)
5~45 ℃
Inlet pressure (㎏/㎝²G)
2~10 kg/cm2 G Optional customized 10~16 ㎏/㎝²G  Model+【H1】』
Power supply frequency
3ψ220V/50~60Hz『Optional customized 3ψ380V、440V、460V / 50~60Hz』
Running current  (A)
7.8
11
15
20
23
29
34
Power consumption  (kW)
2.0
2.6
4.5
5.3
6.7
7.6
9.3
Refrigerant
R-22『Optional customized R407C』
Refrigerant control
Automatic temperature expansion valve
Capacity adjustment
High capacity hot gas bypass valve
Protection device
Intelligent control and protection board+Compressor Overload Relay
+ Dual Pressure Controls + Thermal Relay
Port size
2"
2"
2 ½"
3"
3"
4" DN
4" DN
Dimensions (mm)
Length
Width
Height
1100
650
1350
1300
700
1350
1500
800
1550
1750
850
1580
1900
900
1760
2150
950
1800
2300
1050
1850
Weight (kg)
247
315
397
497
589
700
890
Rated conditions
◎Inlet pressure:7㎏/㎝²G  ◎Ambient temperature:45℃  
◎Inlet temperature:60 ℃  ◎Pressure dew point:5 ℃
※(Other conditions to be corrected)

 

Correction factor

1、Inlet pressure-Correction factor
Inlet pressure (㎏/㎝² G)
2
3
4
5
6
7
8
9
10
Correction factor
0.40
0.55
0.69
0.81
0.91
1
1.07
1.13
1.17

2、Ambient temperature-Correction factor
Ambient temperature (℃)
30
32
35
38
40
42
45
Correction factor
1.10
1.09
1.06
1.03
1
0.94
0.88

3、Inlet temperature-Correction factor
Inlet temperature (℃)
50
55
60
65
70
75
Correction factor
1.08
1
0.94
0.87
0.80
0.73

4、Pressure dew point-Correction factor
Pressure dew point (℃)
2
5
10
Correction facto
1
1.1
1.2

 
The method of choosing the right type
Step 1:
Calculate the [Correction factor] = [Inlet pressure coefficient] ×[Ambient temperature coefficient] × [Inlet temperature coefficient] × [Pressure dew factor]
 
Step 2:
Calculate the [Flow correction] = [Maximum flow rate] ÷ [Correction factor]
 
Step 3:
Select [Air flow capacity] ≧ [Flow correction] models