Hot water coils, due to the ability of the water to freeze, will generally be found in a reheat portion of a heating system. Normally this insures that air below 35º will not come into contact with the reheat coil at a temperature between 45º and 75°. Hot water coils are typically located in duct work where zone heating takes place.

Chilled water coils are most often used in commercial buildings. Chilled water coils respond to the cooling effect of surfaces when wet by moisture condensed from the air. The sum of sensible heat transferred by a dehumidifying cooling coil represents total heat values. Sensible heat transfer, whether cooling or heating, refers to the change in dry bulb temperature only. The system characteristics that affect a chilled water coil's performance are gallons per minute, velocities, and temperature ranges of the fluid through the tubes as well as the cubic feet per minute, velocities, and temperatures of air across the coil fins.

Steam Distributing coil applications are primarily for below freezing air applications.  The inner distributing tubes supply hot steam down the entire length of tubes, thus warming the condensate that has been formed inside the tubes.

Standard Steam coil applications are for above freezing applications.  This coil requires standard oversized holes in tube sheets for expansion and contraction requirements.

Most HVAC preheat coils use 100% outside air with low pressure steam.  In very large HVAC systems, longer coils (over 60" long) are required to meet the performance.  These longer lengths could cause the 5/8" steam distributing coils to clog with condensate.  This clogging reduces capacity because steam and condensate may take up the same space at the same time. It also may cause condensate freeze up.  Therefore, 1" steam distributing coils are recommended for these applications.

DX coils are commonly used in air conditioning refrigeration applications and many types of commercial refrigeration systems. Air to be cooled or dehumidified is circulated through the finned surface. Multiple rows and various tube patterns are used to achieve the desired heat transfer from the air to the circulating refrigerant. Copper tubes with copper or aluminum fins are most commonly used for efficient heat transfer.

Air conditioning systems need to operate efficiently at maximum design loads as well as partial load conditions. Many types of system capacity controls are used to match the load requirement with system capacity. With refrigerant evaporator coils, this generally takes place in the form of surface reduction and/or one of the following:

• Single Circuit
• Face Split Circuits
• Row Split Circuits
• Intertwined Circuits

VAV (Variable Air Volume) systems use buildup coil banks or large air handling units with one refrigeration system. To balance system capacity to load requirements, some form of face or row control is required. During the time of reduced capacity, it is imperative to maintain a fully active dehumidification process at the heat transfer coil. This is best accomplished by row control on standard DX coils or by use of "intertwined" refrigerant circuits. Row control is used for partial load surface balance. Whichever circuit is deactivated first results in full face area operation of the remaining circuit, keeping the full volume of air in contact with active coil surfaces.

More than sheet metal, fin and tube, our insulated coil housings provides you with a “ready to use” coil that results in immediate benefits. By eliminating on-site assembly, you can reduce your time on the job which means more money in your pocket.  With our insulated housings, RAE Coils can provide the right coil, wrapped in cost saving efficiency, right now when you need it.

What is a cased coil? Basically it’s a Standard RAE Coil, Chilled, Hot Water or Direct Expansion completely enclosed in an insulted coil housing. This type of application is typically used for additional cooling within duct work or air handling units. With RAE Coils standard design you can have a blow through or draw through application meeting most applications in as little as four weeks!

RAE Corporation is pleased to offer 61 different sizes of stock booster coils. Many of the sizes are the headerless type in order to accommodate minimal GPM flows and to keep water velocities above laminar flow situations. However, on several of the larger sizes, headers are used in order to minimize water pressure drops and maximize capacities. Booster coil sizes range from 6" x 6" to 24" x 48" and are available in both one and two rows deep. With such a wide range of sizes, RAE Corporation should be able to cover many of your reheat applications needs with our stock booster coil program. Give us a call today, and we will have your order shipped out within 24 to 48 hours.

Are all condenser coils created equal? To some degree, probably so but will other manufacturers provide you a direct replacement in a timely manner at a fair price? While many manufacturers consider condenser coils to be a replacement part and price accordingly, RAE Coils will duplicate your existing coils without the premium. Also, RAE condenser coils are available with single or multiple circuiting for condensing or heat reclaim applications making us a one stop shop for all of your coil needs.

RAE Corporation manufactures a wide variety of heavy duty coils to withstand the rigors of Industrial applications. With the addition of RAE Industrial Coils we can now provide the same exceptional service in which you’ve been accustomed. Our sole intent for the industrial coil is to be able to provide a high quality coil designed for easy maintenance, low operating costs and longevity. With capabilities to build fluid coils for water, glycol, oil and other liquids as well as refrigerant coils and steam coils for high pressures we can now meet all of your Industrial Coil requirements.

The Run-Around method of heat recovery utilizes the RAE Coils HVACR or industrial high-efficiency coil surface: Coils are interconnected by a system of piping in which a 50% ethylene glycol solution is circulated. Coils may be remotely located and exhaust and supply air streams kept entirely separate.