Chilled Water Cooling Coil Selection

The extent to which coils raise the chilled water temperature dramatically affects both capital investment in chilled water piping and pumping power.

Chilled water cooling coil selection.

This allows the return water to temper the warmest entering air getting it closer to its set point prior to leaving the last row where it will see the coldest supply water temperature. Casing options include flanged slip and drive end plates only and inverted side plate flanges in galvanized stainless steel and copper materials. York offers a broad selection of high efficiency commercial hvac coils for hot water or steam heating and chilled water or direct expansion air conditioning. On a cooling coil air velocities above 500 fpm is the point where water droplets can leave the outer edge of the fin.

Rae coils is your one stop shop for everything coils. In many cases higher delta t results in a higher average temperature of the chilled water as it goes through the cooling coil at your load. Typical hot water coil 600 700 fpm. Key decisions for coil selection dynamics of heat.

Cooling coils are an integral part of the chilled water system too. In these cases the cooling coil cannot perform as much cooling. Standard and custom designs are available for new and retrofit installations. We design to avoid this.

Understand the balance of coil face area airside pressure drop and waterside pressure drop when selecting a coil 5. Properly protect water coils from freezing when necessary agenda water and air velocity ranges coil selection examples chilled. This is called moisture carry over. Most chilled water coils have air entering the system at a temperature ranging from 75 f to 95 f return or outside air while chilled water enters the coil at a temperature around 42 45 f.

For example it was once common for chilled water to be 44 f supply temperature and 54 f return temperature. Chilled water coils typically consist of between 3 12 rows of tubes. Water coils need to be piped for counter flow with the return being on the entering air side of the coil and the supply being on the leaving air side of the coil. We offer a complete line of hvac heating and cooling coils for all your replacement and new construction needs.

The delta t was 10 degrees 54. Typical chilled water coil 500 fpm. Coil performance can even influence the efficiency of the chiller. Evaluate water coil selection choices at various water temperatures and flow rates 4.

Whether it s a basic duct booster coil or a custom coil we can meet all of your specifications with accuracy ease and at a competitive price.