Danfoss VXe SLS, Руководство по монтажу и установке

Страница: 43 / 44

Montage- und Betriebsanleitung / User manual VXe SLS
© Danfoss | Produced by Danfoss Redan A/S | 2022.03 | 43 AQ40514397064001-000101 145X2068
ƒˆ‘••
ƒˆ‘••Ȁȁƒˆ‘••ƒ‹Ž‘˜‡‹ƒ
ƒ‰‡ͳͳ‘ˆͳͳ
ƒˆ‘••Ȁ
ƒˆ‘••‡ƒ–‹‰‡‰‡–Ǧ
Ǧ‘ ƒŽ•’‡ –‹‘‡–‡”ƒ‹Ž‘˜‡‹ƒ
——‹‹††‡‡ŽŽ‹‹‡‡••ˆˆ‘‘””™ ™ƒƒ––‡‡””““——ƒƒŽŽ‹‹––››‹‹ƒƒˆˆ‘‘••••„„””ƒƒœœ‡‡††ŠŠ‡‡ƒƒ––‡‡šš ŠŠƒƒ‰‰‡‡””••™ ™‹‹––ŠŠ’’ŽŽƒƒ––‡‡••‘‘ˆˆ ͳͳǤǤͶͶͶͶͲͲͶͶ̱ ̱͵͵ͳͳ͸͸
ƒˆ‘••Šƒ•’”‡’ƒ”‡†–Š‹•‰—‹†‡Ž‹‡ˆ‘”–Š‡™ƒ–‡”“—ƒŽ‹–›‘ˆ–ƒ’™ƒ–‡”ƒ††‹•–”‹ –Š‡ƒ–‹‰™ƒ–‡”—•‡†‹’Žƒ–‡Š‡ƒ–
‡š Šƒ‰‡”•‘ˆ•–ƒ‹Ž‡•••–‡‡ŽሺͳǤͶͶͲͶ̱͵ͳ͸ሻ„”ƒœ‡†™‹–Š’—”‡ ‘’’‡”ሺ—ሻǡ ‘’’‡”Ǧ‹ ‡Žሺ—‹ሻ‘”
–ƒ‹Ž‡••–‡‡Žሺ–ሻǤ–‹•‹’‘”–ƒ––‘’‘‹–‘—––Šƒ––Š‡™ƒ–‡”•’‡ ‹ˆ‹ ƒ–‹‘‹•‘–ƒ‰—ƒ”ƒ–‡‡ƒ‰ƒ‹•– ‘””‘•‹‘ǡ
„—–‹–—•–„‡ ‘•‹†‡”‡†ƒ•ƒ–‘‘Ž–‘ƒ˜‘‹†–Š‡‘•– ”‹–‹ ƒŽ™ƒ–‡”ƒ’’Ž‹ ƒ–‹‘•Ǥ
Plate Brazing material
Parameter Unit Value or concentration AISI 316L
W.Nr. 1.4404
Cu CuNi StS
pH
< 6.0 o - - o
6,0 – 7.5 + o/- o +
7.5 – 10.5 + + + +
>10.5 + o o +
Conductivity µS/cm
<10 + + + +
10 – 500 + + + +
500 – 1000 + o + +
>1000 + - o +
Free Chlorine mg/l
<0.5 + + + +
0.5 – 1 o + + +
1 – 5 - o o o
>5 - - - -
Ammonia (NH
3
, NH
4+
) mg/l
<2 + + + +
2 – 20 + o o +
>20 + - - +
Alkalinity (HCO
3-
) mg/l
<60 + + + +
60 – 300 + + + +
>300 + o + +
Sulphate (SO
42-
) mg/l
<100 + + + +
100 – 300 + o/- o +
>300 + - - +
HCO
3-
/ SO
42-
mg/l
>1.5 + + + +
<1.5 + o/- o +
Nitrate (NO
3
) mg/l
<100 + + + +
>100 + o + +
Manganese (Mn) mg/l
<0.1 + + + +
>0.1 + o o +
Iron (Fe) mg/l
<0.2 + + + +
>0.2 + o + +
* Hardness ratio
[Ca
2+
, Mg
2+
]/[HCO
3-
]
/
0 – 0.3 + - - +
0.3 – 0.5 + o/- + +
>0.5 + + + +
+ Good corrosion resistance
o **Corrosion could happen when more parameters are evaluated with o
o/- Risk of corrosion
- Use is not recommended
* Hardness ration limits defined per experience and internal tests in Danfoss laboratory
** In case of three or more parameters evaluated with o consultancy is needed with Consultant for Corrosion & Microbiology or BU HHE Representative
Recommended Chloride concentration to avoid Stress Corrosion Cracking (SCC) in the stainless-steel plates:
Application temperature Chloride concentration
at T ≤ 20°C max 1000 mg/l
at T ≤ 50°C max 400 mg/l
at T ≤ 80°C max 200 mg/l
at T ≥ 100°C max 100 mg/l
For more information please follow this link
19. GUIDELINES FOR WATER QUALITY IN DANFOSS BRAZED HEAT EXCHANGERS