An adiabatic fluid cooler keeps process fluid within a coil while using air to reject heat. When the design includes evaporative air precooling, water can lower the entering-air temperature during demanding conditions. The water-assisted rating should not be mistaken for year-round dry performance.
Ask for two operating selections
Compare capacity in dry mode and at the design point with precooling active. State the ambient dry-bulb and relevant humidity conditions, process-fluid temperatures and flow. The benefit available from evaporative precooling depends on the air conditions.
Clarify the temperature or control condition at which water assistance starts. A unit that uses less water under one climate may use more under another; annual consumption requires a climate and load profile.
Keep the process and wet section distinct
The process fluid passes through the heat-exchanger circuit. The precooling-water arrangement may use wetted media or another manufacturer-defined method. Do not assume that every adiabatic cooler sprays directly onto the coil or recirculates water in the same way.
Water quality, draining and maintenance must match that construction. Deposits in the precooling section can reduce its effectiveness and change airflow resistance.
Include seasonal operation
Define freeze protection for the process circuit and water system. Where glycol is used, the thermal selection and pumping duty must account for its properties. Fan control and minimum operating conditions should also be coordinated with the process.
BAC's adiabatic product information distinguishes dry operation from pad-assisted precooling. Obtain the actual offered construction's selection and operating instructions rather than transferring one model's water-management features to another.
Compare installed footprint, air clearances, noise at the relevant fan duty, water treatment and service access. A compact coil package can require substantial surrounding space to avoid air recirculation.
Send the fluid duty and local climate conditions to shengtongJH to coordinate an adiabatic-cooler configuration and scope.