Industrial Maintenance » HVAC


Thermal Science
Northeast Tech's Thermal Science class provides the knowledge and equipment necessary to comprehend the principles of modern thermal systems, such as HVAC, geothermal, refrigeration, and steam systems. As participants progress through the curriculum, they will perform experiments demonstrating multiple principles, including the ideal gas law, linear and volumetric thermal expansion, basic temperature measurement, latent and sensible heat, specific heat capacity, conduction, convention, radiation, evaporative cooling, and basic refrigeration. Northeast Tech's learning system showcases a full range of components, such as a fire syringe, a vacuum hand pump, and bi-metallic ball and ring. These components are used in various combinations to conduct experiments that show learners physical examples of thermal concepts and build foundational knowledge they can use in real-world applications. 
HVAC Troubleshooting
Northeast Tech uses a hands-on learning system that performs heat pump, air conditioning and refrigeration operation to teach valuable HVAC troubleshooting skills. The curriculum covers major topic areas like heat transfer, dual-pressure devices, filter/dryers and moisture indicators, refrigerants, and an array of other troubleshooting topics. Specifically, participants will learn how to calculate conduction heat transfer and mass flow rates. They will also study the concepts of the function of a sight glass/moisture indicator, how to test an automatic expansion valve, and how to troubleshoot insufficient cooling. Students will use a variety of industrial components like flow meters, expansion valves, pressure/temperature gauges, evaporators, and reversing valves to practice hands-on, skill-building tasks such as determining the amount of subcooling in a mechanical refrigeration system, setting the pressures on a dual-pressure control device, using a gauge manifold to measure thermal system pressure, testing a thermostatic expansion valve, and testing a compressor.