ZT/ZTY & TR/TRY - Special industrial air coolers 0 pages
General information & application
Apart from the standard ranges of industrial and commercial
air coolers, Alfa Laval produces special Helpman air coolers
fully designed to customers’ specifications. For these special
air coolers there are four basic coil types available (Helpman
ZT, ZTY, TR & TRY) and a great number of accessories and
design options.
Evaporating temp. down to -45 °C
Refrigerants ammonia (R-717), all H(C)FC, brine, CO2
Capacities as required
Coil types
• ZT coil
- Steel tubing 22 x 1.0 mm (St-35.8)
- Tube pitch 60 x 60 mm square
- Steel fins 0.35 mm (St5)
0.45 mm after galvanising.
- Fin spacings 6 up to 18 mm
- Coil galvanised acc. NEN-ISO 1461
• ZTY coil
- Stainless steel tubing 22 x 0.7 mm (SS 304)
- Tube pitch 60 x 60 mm square
- Aluminium fins 0.4 mm (AlMg 2.5)
- Fin spacings 6 up to 14 mm
• TR coil
- Cu tubing 5/8” x 0.45 mm
- Tube pitch 50 x 50 mm square
- Aluminium fins
- Fin spacings 3 up to 12 mm
• TRY coil
- Stainless steel tubing 16 x 0.7 mm (SS 304)
- Tube pitch 50 x 50 mm square
- Aluminium fins
- Fin spacings 3 up to 12 mm
Optional features
• Coil
- Multiple fin spacing
- Epoxy coated fin material
• Casing
- Epoxy coating RAL
- Sight windows or inspection hatches
- Side panels
• Fans
- Dual fan speed / reinforced axial fans
- Protection class IP65
- Isolating switch
• Defrost systems
- Hot gas / water / electric defrost
- Automatic defrost dampers
• Heating (electric/hot gas)
- Driptray / coil / fan ring heating
- Defrost damper heating
• Insulation
- Drip tray / casing / cladding
• Installation
- Installed non-return valve
- Hot gas coil in driptray connected with suction header
Additional options and technical specifications on request.
ZT/ZTY & TR/TRY
Special industrial air coolers
ZT/ZTY & TR/TRY