BAC S15E 1018-10 LE open evaporative cooling tower chiller dry cooler refrigeration unit

BAC S15E 1018-10 LE

BAC S1500E Cooling Tower
The BAC S15E 1018-10-LE is a high-performance, open cooling tower from the S1500E series manufactured by Baltimore Aircoil Company (BAC).
This specific model is designed for industrial cooling applications and large air conditioning (HVAC) systems where high efficiency and ease of maintenance are paramount.

Technology

Patented BACross III fill system, which allows for easy inspection of the fins to prevent biological growth (e.g., Legionella).

Main Features of the S1500E Series

Maintenance Access: A large, inward-swinging access door, as well as internal maintenance platforms, allow technicians to conveniently perform inspections while standing inside the unit.
Hygiene Control: The design minimizes standing water and protects against sunlight through special air inlet elements, which reduces algae growth.
Flexibility: Thanks to the single-sided air inlet, the cooling tower can also be installed in confined spaces or directly against walls.
Materials: Galvanized steel with Baltibond hybrid coating.

Typical Applications

Industrial Cooling: Used in factories for process cooling.
Air Conditioning (HVAC): Used in large building complexes as part of a central chilled water system.
Refrigeration: Used as a condenser in commercial refrigeration systems.

Cooling Capacity

An open evaporative cooling tower does not have a fixed, single kW cooling capacity because the actual performance depends entirely on the prevailing thermodynamic ambient conditions and the system temperatures.

This model is designed for maximum flow rates of up to 198 liters per second.

Under typical industrial or HVAC standard conditions, the nominal cooling capacity of this model is in the range of approximately 1,200 kW to 2,100 kW.

Why does the cooling capacity vary?

Wet-bulb temperature (outside air): The cooler and drier the ambient air, the more water can evaporate, and the higher the cooling capacity.

Water temperatures: The performance changes significantly depending on the inlet warm water temperature (e.g., 35 °C) and the outlet cold water temperature (e.g., 29 °C).

Air volume flow: According to the technical data from BAC, the S15E 1018-10 LE model actively moves 60.0 m³/s of air through three 11.0 kW fan motors.
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If this air volume is reduced by a frequency converter (e.g., during nighttime operation or in winter), the cooling capacity decreases in a controlled manner.

Approach: This is the most important thermodynamic limit. It describes the difference between the desired cold water temperature and the physically determined wet-bulb temperature. The closer the cold water is cooled to the wet-bulb temperature (smaller approach), the less kW of cooling capacity the tower produces.

Technical Data:

Fan & Air Data

Air volume flow: 60.0 m³/s (generated in draw-through operation)
Fan motors: 3x 11.0 kW (axial fans)
Technology: Integrated belt drive
Water flow: 198 l/s

Hydraulic Connections

Water inlet (fluid inlet): 1x DN 250 (nominal size ND 250 mm)
Water outlet (fluid outlet): 1x DN 300 (nominal size ND 300 mm)
Make-up water connection: 1x DN 40 (ND 40 mm)
Overflow / drain: DN 80 (ND 80 mm) / DN 50 (ND 50 mm)

Dimensions & Weights

Operating weight: 11,446 kg (including water filling up to the overflow)
Shipping weight: 5,350 kg (empty weight)
Heaviest single part: 3,

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