Hybrid Closed Circuit Cooling Towers

Hybrid Cooling Towers are used where high efficiency process cooling is required with maximum water savings and mist elimination. Hybrid cooling towers consist of a finned tube dry coil and a finless tube wet heat exchanger. The process fluid first enters the finned tube dry coil at the top of the tower. In this coil, the process fluid releases some of its excess heat to the atmosphere with the aid of fans. The process fluid then enters the finless tube heat exchanger. With the help of water sprayed on the heat exchanger and fans, the process fluid is cooled to the desired temperature and leaves the hybrid closed-cycle cooling tower. The Hybrid Closed Circuit Cooling Tower is preferred in processes where water costs are high, water supply is problematic, mist formation is undesirable or high temperature fluids need to be cooled.

Catalogue

Closed Circuit Hybrid Cooling Towers deliver fully rated thermal performance over a wide range of flow and temperature requirements. Distinct advantages of the Hybrid include plume abatement, significant water savings over traditional water-cooled equipment, and its suitability for high temperature cooling (>80 °C). First, the process fluid is circulated through the dry coil. A portion is of the heat is rejected to the air passing over the dry coil. The process fluid then enters the wet coil where the remaining heat of the process fluid is transferred through the tube wall to the water cascading downward over the tubes. Simultaneously, air is drawing in through the air inlet louvers at the base of the cooler and travels upward over the coil opposite the spray water flow. A small portion of the water is evaporated which rejects heat. The warm moist air is drawn to the top of the closed circuit cooler by the fan and is discharged to the atmosphere. The remaining water falls to the sump at the bottom of the cooler where it is recirculated by the pump through the water distribution system and back down over the coils.

» The company is the only one manufacturer in Turkey that produces dry finned coils and evaporative coils in its factory.
» At peak conditions in the “dry/wet” operating mode, a significant amount of heat is removed by sensible heat transfer, providing reduced water consumption versus conventional evaporative cooling
» When the heat load and/or ambient temperatures drop, water consumption is further reduced in the “adiabatic” operating mode
» Water consumption is totally eliminated in the “dry” operating mode
» The finned dry coil tempers the incoming fluid, allowing higher inlet fluid temperatures than traditional closed circuit cooling towers.
» In DRY mode, the spray water is turned off, saving pump energy, and the fluid to be cooled is circulated through both the finned and prime surface coils
» During the coldest times of the year, when the potential for visible discharge is greatest, the Hybrid Cooling Tower operates 100% dry, completely eliminating plume