Coming soon: Baltimore Aircoil Company’s evaporative condensers

BAC manufactures three types of evaporative condenser: forced draft coil only, induced draft coil only and its patented induced draft coil-fill condenser.

Forced Draft-Coil Only Evaporative Condenser

BAC’s forced draft condensers utilize either axial or centrifugal fans located below the condensing coil. Air is drawn in through the fan and is forced over the coil, exiting at the top of the unit. The water then cascades over the condensing coil, falling into the sump before being recirculated. Because the air and water paths are opposite directions, this process is often referred to as “counterflow”. The BAC model lines which make up this class of condenser are the VCA, VC1 and VCL and have a tonnage range of 7-1433 ammonia tons.

Induced Draft-Coil Only Evaporative Condenser

BAC’s induced draft condenser utilizes axial fans located above the condensing coil. Air is drawn in through openings at the bottom of the unit and is drawn, rather than forced, over the condensing coil. Similar to forced draft units, the air exits through the top of the unit. Because the air is being drawn up and over the coil and the water is cascading over the coil, this class of unit is also commonly referred to as “counterflow”. The model line which makes up this class of condenser is the PC-2 and has an ammonia tonnage range from 41 – 2506.

Induced Draft, Coil and Fill Evaporative Condenser

BAC’s patented coil-fill condenser is unique in that it employs a secondary heat rejection media as well as a distinctly different air flow pattern. The inclusion of cooling tower fill as a secondary area for additional heat rejection allows BAC to utilize a smaller condensing coil yet maintain like tonnages in a given box size when compared to a coil only condenser. A smaller condensing coil translates to several owner and installing contractor benefits: less refrigerant, fewer refrigerant connections and less rigging and operating weight.

The airflow and water pattern for this condenser is what BAC refers to as “parallel” and “cross” flow. The air enters the top of the unit and is drawn across the condensing coil. The water is cascading over the coil hence the air and water are in parallel. A secondary air path enters the side of the unit and is drawn over the cooling tower fill media before it exits the top of the unit. Here additional heat rejection is taking place. Since this airflow pattern is flowing across the fill media it was coined “cross flow”. The model lines which make up this class of condenser are the CXVB and CXV-T and have an ammonia tonnage range from 75 – 1888.

BAC’s Hybrid Future

BAC continues to push the envelope of R&D, looking to the future of refrigeration. The most recent product, the TrilliumSeries™ Condenser uses a patented Dry-Coil Adiabatic™ Design that saves energy, reduces refrigerant charge, and lowers operating costs. With the use of proprietary logic and sophisticated controls, the On-Demand Adiabatic™ Pre-Cooler uses untreated water only on the hottest days to maintain condensing temperatures that typical air-cooled technology simply can’t achieve.

BAC on ammonia21.com

Baltimore Aircoil Company joined ammonia21.com 'in order to continue contributing to the ammonia discussion, to act as a resource, and to keep a pulse on the trends of the every changing ammonia marketplace' explained Preston Blay, company Director of Refrigeration.

About Baltimore Aircoil Company

As a leader in energy efficient heat transfer technology, Baltimore Aircoil Company strives to provide customers with industry leading product solutions for their application needs. Within the global food chain, BAC provides value by reducing system energy requirements though highly efficient evaporative or adiabaticly cooled equipment.

Contact information

If you would like to contact Baltimore Aircoil Company for any enquiries, you may send a request to Huseyin Koca, Refrigeration Applications Engineer.