DK suction gas heat exchanger

The DK suction gas heat exchanger is for more safety of the compressor and optimizes the compressor and the performance of the cooling unit regarding liquid sub cooling and overheating the suction gas.

The strengths and advantages at a glance

  • With suction gas liquid heat exchanger the cooling unit could reach till 10% more performance depending of the range of operating 
  • Better utilization of evaporator through smaller overheating The result is an improvement of performance-quotient Qo/Pe. 
  • The cooling-power increases and the electric-power is nearly constant
  • The safety for compressor is optimal:
    • The grease of oil improves through higher suction gas temperature
    • The compressor is protected against liquid
  •  Highlight: DK suction gas heat exchanger also suitable for refrigerant propane

Types of products

Optimal ratio for suction gas and liquid dimensions:

The number of tubes is calculated that the area of cross-section is analogous to suction gas and liquid connection. The number of tubes which are necessary for problemless operation with little pressure-drops is relevant not the maximum of surface or maximum of tubes.

Product types
Suction Gas Heat Exchanger
Type
42/3x13
54/5x13
64/7x13
76/9x13
89/12x13
108/20x13
133/30x13
159/40x13
219/64x13
External pipe (mm)
42
54
64
76
89
108
133
159
219
Internal tubes
3x13
5x13
7x13
9x13
12x13
20x13
30x13
40x13
64x13
Length of internal tubes (mm)
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
Distance mounting (mm)
500
500
500
500
500
500
500
500
500
Total length (mm)
1.500
1.500
1.500
1.500
1.500
1.500
1.500
1.500
1.500
Total height (mm)
360
370
380
400
420
450
480
500
560
Suction line max. (mm)
28
35
42
54
64
76
89
108
133
Liquid line (mm)
16
18
22
22
28
35
42
54
64
Surface LP side (m²)
0,48
0,8
1,12
1,44
1,92
3,2
4,8
6,4
10,24
Weight (kg/m)
5
9
13
17
22
33
41
52
87
Weight (kg per 0,1 m)
1
1
1
1
2
3
4
5
6
Content of outer pipe area (LP side) in dm3
0,8
1,3
1,9
2,8
4
5,5
8,3
12,4
26,1
Content of tube area (HP side) in dm3
0,26
0,35
0,5
0,6
0,8
1,3
2
2,8
4,8