Manifolds and Interconnecting Pipework
- With orifice plate.
- With hydraulic by-pass.
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.
Clever design and control strategies allow for significant reduction in water consumption compared with a conventional open system.
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.
Dry operation:
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Adiabatic operation:
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Wet-dry operation: The warm process fluid (1) flows both through the finned discharge coil (2) and the prime surface coil (3). An axial fan (4) draws the air (5) over both coils and fill pack (6). At the top where the warm fluid enters the tower, the discharge air (7) is saturated and pre-cools already the fluid. Then a next heat transfer process occurs in the prime surface coil which is wetted by the spray system (8). The cooled fluid exits (9) the tower. The spray water flows further over a fill pack, improving the heat transfer process by sub-cooling the spray water. The water is collected in a sloping basin (10) and a pump (11) recirculates the cooled water again over the prime surface coil. When there is less heat load or the ambient temperature drops, the modulating valve (12) will control the flow through the prime surface coil in a way that the design fluid outlet temperature is kept and water is saved. Plume is also minimized because there is less evaporated water and the discharge air is heated with the dry finned coil. |
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