Which type of heat can a technician physically feel during their work?

Sensible heat refers to the type of heat that can be physically felt by a technician during their work. It is the heat that causes a change in temperature of a substance without changing its state. For example, when a technician touches a pipe or a piece of equipment, they can feel the temperature change, which is an indication of sensible heat. It represents the energy exchanged by a substance resulting in a temperature change that can be sensed or measured.

In the context of air conditioning and refrigeration, understanding sensible heat is crucial for diagnosing system performance and ensuring comfort levels. In contrast, latent heat involves the heat required for phase changes (like from liquid to vapor) and cannot be felt in the same manner, as it does not result in a temperature change. Superheat refers to the temperature of vapor above its boiling point and is typically assessed through gauges rather than direct sensation. Lastly, while "subheat" isn't a standard term in thermodynamics related to heating, it implies a misunderstanding of the established concepts of heat transfer and energy exchange.