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Tunnel coolers (shock coolers/blast freezers)
Optimal design made real
Alfa Arctigo IST
Alfa Arctigo IST
Alfa Arctigo IST tunnel coolers have been specifically designed for cooling and freezing tunnels. Applications include shock cooling and shock freezing installations. Alfa Arctigo IST coolers reduce the weight (moisture) loss to a minimum and secure product quality during the cooling/freezing process.
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Refrigeration
Technical features
- Main applications
Industrial air coolers single discharge, air direction (D=draw-through, B=blow-through) - Refrigerants
HFC – NH₃ – Brine – CO2 - Capacity range
3 up to 240 kW - Air quantity
3,000 up to 120,000 m3/h - Design pressure
10 up to 80 bar - Fan-motors
1 to 6 fans fitted with high-efficiency AC or EC fan motors drawing or blowing trough the coil - Fan diameters
ø 400 up to 910 mm - Fin spacing
Standard fin spacing 4, 5, 6, 7, 8, 10 and 12 mm
- Refrigerants
- HFC – NH₃ – Brine – CO₂
- Capacity Range
- 3 up to 240 kW
- Air Quantity
- 3,000 up to 120,000 m³/h
Casing
- Corrosion resistant materials: coil frame and casing pre-galvanized steel, epoxy powder-coated RAL 9003
- Hinged side panels and driptray, drain(s) 1½” BSP ext
Fan-Motors
- 1 to 6 fans.
- High-efficiency AC or EC fan motors drawing or blowing through the coil
- Integrated thermo contacts (Clickson) provide reliable protection against thermal overload
- Available in different fan diameters: 400, 450, 500, 630, 710, 800 and 910 mm
Options
- Connection box (CB)
- Connection box with single switch for all fans (CB1) Shut up sock (S) – for ISD
- Sock Ring (SR) – for ISD
- Electric defrost systems:
- Electric defrost in driptray + hot gas in coil (E1)
- Electric defrost heavy (E2)
- Electric defrost light (E4)
- Hotgas defrost systems:
- Hotgas defrost (HG)
- Hotgas defrost, connected (HGC)
- Hot glycol ciruit defrost (HW) – copper tubes
- Stainless steel casing and coil frame (SSC)
Standard materials for underplate (aluminium) and fan grid (black painted steel)
- Alternative fin materials (SWR / EP)
- Dual fin spacing (DF) – on request
- On/off switch (SW)
- Motorized defrost damper – on request for ISD
- Top connections (AVA) – for brine models
- Flanges PN16 in AISI 304 for copper or stainless steel tubes models (F) – for brine models. Supplied loose.
- Fan casing 90° / 45° (FC1 / FC2) – for ISD
- Suction hood 90° / 45° (H1 / H2) – for ISD
- Insulated suction hood 90° / 45° (IH1 / IH2) – for ISD
- Hinged fan (HF)
- Insulated drip tray (I2)
- Mounting feet (MF)
- Fan ring heater (FRH)
- Streamer (ST) – for ISD
Design Pressure
- Refrigerants
- Max working pressure
- HFC
- 33 bar
- NH₃
- 30 bar
- CO₂
- 33-40-60-80 bar
- Brine
- 10 bar
Each heat exchanger is leak tested with dry air. Units are supplied with a nitrogen pre-charge (excluding brine)
Finned Coil
- 10 coil block modules
- 3, 4, 6, 8 or 10 tube rows deep
- Tubing ø 5/8” ripple Cu or smooth Cu tubing for brine or smooth stainless steel; ø 3/8” Cu for CO2
- Tube pitch 50 mm square
- Corrugated Alu-fins
- Fin spacings 4, 5, 6, 7, 8, 10 and 12 mm
Certifications
- The LUVE quality system is in accordance with ISO 9001. All products are manufactured according to PED regulations. LUVE participates in the ECP program for HE.
Check ongoing validity of certificate*: www.eurovent-certification.com*Brine and NH3 refrigerants are not covered by Eurovent certification