Helpman THOR-A
Helpman THOR-A industrial air coolers have been designed for airsock application. All models are fitted with an airsock ring and fan motors capable of supplying the additional external pressure that is required for the proper functioning of an airsock system. Suitable for applications like processing rooms, working production area’s and greenhouse cooling.
All THOR models have been highly standardised in construction and dimensions, while maintaining flexibility in fin spacings, coil construction and circuiting design.
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Refrigeration
Technical features
- Main applications
Helpman THOR-A industrial air coolers have been designed for airsock application - Refrigerant
All HFO/HFC, CO2 and Brine - Capacities
4 up to 46 kW**higher capacities on request
- Airsock diameter
450 up to 730 mm - Evaporating temperature
+5 to -15 °C - Design pressure
6 up to 33 bar - Fan-motors
1-3 Fans, available in a range of different executions - Fan diameters
Ø 450 up to 730 mm
- Refrigerant
- All HFO/HFC, CO2 and Brine
- Capacities
- 4 up to 46 kW*
*higher capacities on request
- Airsock diameter
- 450 up to 730 mm
- Evaporating temperature
- +5 to -15 °C
- Design pressure
- 6 up to 33 bar
Casing
- Corrosion resistant casing material: Aluminium/Sendzimir, white epoxy coated (RAL 9003).
- Hinged, enclosed end covers (modules 1-4).
- Hinged drain tray, drain(s) 32 mm.
- PVC connection, freely adjustable into either horizontal or vertical position.
- Refrigerant distribution optimised to refrigerant applied.
- Refrigerant connections on right hand side (fan side view).
- Fitted with schräder valve on the suction connection for testing purposes.
- Sufficient room for fitting the expansion valve inside.
- Suitable for dry expansion or pumped system.
- Stickers indicate fan direction and refrigerant in/out.
- Delivery in mounting position on wooden beams. Coolers are mounted on wooden beams. Installation can take place with use of a forklift.
Fan-Motors
- 1-3 Fans, available in a range of different executions.
- Airsock diameters Ø 450 up to Ø 730 mm.
- Enclosed design spray-tight fan motors, protection class IP55.
- Motors are equipped with a thermal safety device in the windings, connected to separate terminals in the box.
- High and low fan speed execution.
- 1500 rpm (H design)
- 1000 rpm (L design)
Options
- Defrost systems:
- Hot gas coil in drain tray (G1)
- Hot gas connected (G1C)
Hot gas coil in drain tray connected to suction header, without non-return valve. - Water defrost (W)
- Hot glycol defrost (HW1, HW2)
- Electric defrost (E1, E4)
Electric defrost for air coolers with pumped refrigerant circulation or in glycol execution on special request only
- Driptray insulation
- Styropore 10 mm + cladding (I2)
Not combined with electric defrost - Foamglass 25 mm + cladding (I3)
- Styropore 10 mm + cladding (I2)
- Refrigerant connections left/right (L/R)
(fan side view) - Mounting feet (MF)
For floor mounting, THOR coolers can be equipped with hot dip galvanized steel mounting feet. - Isolating switch, mounted (ISM)
- Secondary refrigerant
All models available for brine application.
Standard connections Cu soldering, other connections (thread/flange) on request. - Stainless steel 304 casing (SSC)
- Suction hood (SH)
Design pressure
- Design pressure 33 bar (HFO/HFC) or 6 bar (brine).
- Higher design pressures on request.
- Each heat exchanger is leak tested with dry air and finally supplied with a nitrogen pre-charge.
Coil
- 4 coil block modules.
- 4 or 6 tube rows deep.
- Cu ripple fin tubing ø 5/8” (smooth tubing for brine).
- Tube pitch 50 x 50 mm square.
- Corrugated Alu-fins.
- Fin spacings 4, 6, 7 mm.