1.5: Additional Key Terms
- Page ID
- 40420
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Radiation is the transfer of heat through electromagnetic waves, without the need for a physical medium. Heat from the sun reaches the Earth through radiation. In HVAC/R systems, radiative heat transfer can be observed when heat is emitted from warm surfaces, like radiators, and absorbed by objects or people nearby.
Radiant heating systems, such as underfloor heating, use radiation to transfer heat to objects and spaces, providing warmth without direct contact with air.
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Air Handler – A unit that moves air through heating, cooling, and ventilation systems. Found in furnaces, heat pumps, and AC systems.
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Latent Heat – The heat energy required for a substance to change state without changing temperature. Important for understanding humidity control in HVAC systems.
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Saturation Temperature – The temperature at which a substance changes state (liquid to vapor or vice versa) at a given pressure. Critical for understanding refrigerant cycles and system performance.
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Static Pressure – The resistance to airflow within a duct system. Used to assess ductwork efficiency and airflow problems.
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Air Filter – A device that removes dust, pollen, and other particles from the air. Improves indoor air quality and protects HVAC components from damage.
Pro Tip: Use flashcards to memorize HVAC terms! Knowing these terms will help you on job sites, in training programs, and during certification exams.