Lincoln University

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Welcome to Lincoln University, your hub for heating, ventilation, air conditioning, and refrigeration education. We provide a diverse range of resources to help you stay informed and excel in the industry. Explore our resources below and embark on your path to becoming an HVAC & Refrigeration expert!​

Video Library

Explore our video library to enhance your understanding of industrial and commercial HVAC & Refrigeration processes for effective and reliable systems.

ASHRAE Atlanta x Lincoln Associates Refrigeration Seminar

The Atlanta Chapter of ASHRAE and Lincoln Associates hosted a refrigeration seminar on 5/20/2025 at the ASHRAE Headquarters. The event was designed for engineers, contractors, and owners, providing a dynamic platform to share insights on the latest trends, emerging technologies, and best practices in the refrigeration industry.

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HVAC & Climate Control

Explore topics such as Dehumidification, Evaporative Cooling, Air Rotation, Air Curtains, Refrigeration, and Infrared Heating, gaining valuable insights into the intricacies of each system for a comprehensive understanding of efficient climate management in various settings.

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Specialized Products & Partnerships

Explore this series to discover quality products from our trusted manufacturing partners, highlighting collaborative efforts that bring reliable solutions to enhance your operations.

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Industrial Processes

Discover insights on industrial processes, touching on topics such as dust, condensation, dust collection, mold, plastics, and food & beverage. Learn practical tips to boost efficiency and quality across different industries.

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Advanced HVAC Energy Recovery Solutions by ACT

Lincoln Associates proudly represents Advanced Cooling Technologies to deliver advanced HVAC energy recovery solutions. This playlist covers cutting-edge technologies like heat exchangers, thermosyphons, and energy-efficient HVAC innovations, helping commercial, industrial, and mission-critical facilities reduce energy costs, improve efficiency, and minimize environmental impact.

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Guides

Explore our comprehensive guides for in-depth insights on industrial and commercial HVAC & refrigeration, optimizing systems for occupant comfort and efficiency.

Industrial & Commercial Heating and Humidification Efficiency Guide.

This guide emphasizes the importance of efficient heating and humidification systems in large industrial and commercial spaces, highlighting strategies to enhance comfort, productivity, and energy savings. Learn more about optimizing these essential systems to create a conducive environment for both employees and machinery.

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Evaporator Coil - Single-Circuit

Single Circuit

Evaporator Coil - Intertwined

Intertwined

Evaporator Coil - Split Face

Face Split face

Tube Diameter

Use a caliper or tape measure to determine the outside diameter of the tubes.

If necessary, remove insulation to see the incoming and outgoing lines. Measure the diameter of the outside of the line to help determine connection size.

Standard connection types are MPT (male pipe thread), FPT (female pipe thread), and Copper Sweat Connection. MPT is threaded on the outside, FPT is threaded on the inside, and Copper Sweat is used for soldered connections

Fins per Inch

Using a ruler, count the number of fins on the coil within one inch. Normal fin counts will be between 4 and 14 FPI.

Fin Length

Measure in the direction of the tubes, regardless of which direction the tubes are running.

Fin Height

Measure in the direction of the fin.

Single, Double, and Half Serpentine

Rows are counted in the direction of airflow, no matter how the coil is installed. You can count rows by looking at either the header end or the return bend end of the coil. Note that headers or return bends may not be evenly spaced across the coil.

Fluid coils—hot water, chilled water, and glycol water—regulate building air temperature by heating or cooling air in Air Handling Units (AHUs). Constructed with multiple rows of tubes, typically copper, these coils efficiently transfer heat between air and circulating fluids. They are vital for year-round comfort, accommodating diverse fluids like glycols and thermal oils for varied HVAC needs.

Condenser coils transfer heat from refrigerant vapor to the outdoor air, ensuring efficient cooling in HVAC and refrigeration systems. Constructed from materials like copper or aluminum to maximize heat transfer, these coils are vital for maintaining precise temperature control in industrial and commercial environments.

Steam coils utilize the latent heat of steam, released during condensation from vapor to liquid. They feature efficient condensate management to prevent water buildup and ensure uniform steam distribution. Available in configurations for high and low-pressure applications, steam coils are highly effective for heating air in a wide range of environments.

Evaporator coils absorb heat from indoor air to cool and dehumidify spaces by evaporating refrigerant from liquid to vapor. Located indoors, these coils are essential for maintaining comfortable environments in industrial and commercial settings, offering excellent performance in cooling, process cooling, and dehumidification applications. They are versatile for use in Air Handling Units (AHUs), central systems, or duct installations.