BRAZED HEAT EXCHANGER

Medium:

• Water glycol (coolants)
• HFC operating fluids
• Water
• Oil

 

Contamination:

• The quantity of particles in suspension should be less than 10 mg/l.
• Particle size < 0.6 mm. (spherical).
• Thread-like particles cause a rapid rise in pressure drops.

 

Temperature Range:
50°C to 437°F (10° to 225°C)(freezing point and boiling point must be taken into consideration!)

 

Pressure:

• max. 49 psi (3 bar) (static) up to 257°F (125°C)
• max. 435 psi (30 bar) (static) up to 437°F (225°C)
• test pressure: 650 psi

 

Corrosion:
The following limits refer to a pH value of 7

• free chlorine, CL2 < 0.5 ppm
• chloride ions CL < 700 ppm at 20°C, < 200 ppm at 50°C

 

Other limits:

• ph 7 - 10
• Sulphate SO4 2-< 100 ppm
• [H CO3 -] / [SO4 2-] > 1
• ammonia, NH3 < 10 ppm
• free CO < 10 ppm

 

The following ions are not corrosive under normal conditions:
phophate, nitrate, nitrite, iron, manganese, sodium and potassium