Samsung mini DVM Series, Service Manual

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Operating Instructions and Installation
11-19 Samsung Electronics
7. Heat Exchanger Technology
• 7 Hair pin tube with wide fin
• Fin pitch 1.7mm is possible for a wide fin(FP 1.5 is not recommended in outdoor unit)
• The W-slit FP 1.7 has same pressure drop to slit FP 1.5, better heat transfer.
• 7 Tube heat exchanger have relatively low heat transfer area.
• The Wide fin solve this problem and increase capacity and EER.
W-slit(FP1.3)
W-slit(FP1.5)
W-slit(FP1.7)
Slit(FP1.3)
Slit(FP1.5)
100
80
60
40
20
0
4.00
3.50
3.00
2.50
2.00
1.50
Pressure drop(Pa)
0.5 1 1.5 2 2.5 3
Air velocity(in)
120
110
100
90
80
70
Pressure drop(Pa)
W-slit(FP1.3) W-slit(FP1.5)
104.9%
124.7%
107.7%
111%
Pressure drop
Capacity
Slit Fin Wide-Slit Fin
Shape Fin width Fin pitch Heating EER HX
12.7mm 1.5mm 85% 2.65 3
18.2mm 1.7mm 99.4% 3.14 2
Slit Fin
Wide-Slit Fin