Modulating Air Inlet Dampers
- Galvanised steel.
- Opposed blade, air-tight design.
- Located in the back of the upper “wet” section.
Combined flow, Axial Fan, Induced Draft
Dual coil construction allows for varying flow through each coil and the ability to use one coil or the other. This is useful for both efficiency during operation and down time during maintenance.
Multiple fans provide redundancy as well as energy efficiency when working on VSD based controls.
Open internal area provided for ease of access to all components within the unit for maintenance.
Through modifications to the coil arrangements and discharge design potential for plume from the unit is reduced significantly.
Reduced Water Consumption
Clever design and control strategies allow for significant reduction in water consumption compared with a conventional open system.
Up to 70% water saving
Patented intelligent flow control system. With a 3-way valve for precise setting of outlet fluid temperature and unrivalled annual water-saving. Load profile-adaptable to dry, adiabatic or combined wet-dry operation.
The vapour (1) passes first through the dry finned coil (2) and then enters the prime surface coil (3), which is wetted by a spray system (4). When the dampers (5) are closed an axial fan (6) draws air over the prime surface coil in parallel with the water spray flow. The evaporation process condenses the vapour into liquid (7). The spray water falls onto a fill pack (8) where it is cooled before falling into the sloping water basin (9) or sump. The spray pump (10) recirculates the cooled water to the spray system. The warm saturated air (11) leaves the tower through the drift eliminators (12) over the dry finned coil where it picks up additional sensible heat.
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If the ambient temperature is below the condensing temperature, the dampers will modulate open. The air flow increases and air distribution shifts, so that less air is drawn over the prime surface coil and fill pack. This enhances the sensible heat transfer and further reduces the water consumption.
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Complete dry operation is possible when switching off the spray pump. |
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