Terminology check — “dehydration” versus “dehumidification”. Evaluate the statement: “Dehydration is the process of removing water vapour from the surrounding air.”

Introduction / Context:
Accurate HVAC terminology avoids confusion in design documents and operations. The removal of water vapour from air is a fundamental process in comfort and industrial air-conditioning, but the correct technical term matters.

Given Data / Assumptions:

• The process described targets moisture removal from air.
• No restriction on method (cooling-based or desiccant-based).

Concept / Approach:
Removing water vapour from air is called dehumidification. “Dehydration” usually refers to removing water from materials (e.g., dehydrating salts, foods) or the physiological condition of a person. While desiccant wheels are sometimes informally said to “dehydrate” air, the accepted HVAC term is dehumidification.

Step-by-Step Solution:
Identify the object of moisture removal: ambient air.Correct HVAC term for moisture removal from air = dehumidification.Therefore, the statement equating this to “dehydration” is false.

Verification / Alternative check:
Psychrometric process nomenclature in standard texts uses “cooling and dehumidification” for coil-based moisture removal and “desiccant dehumidification” for sorption-based systems.

Why Other Options Are Wrong:
(a) is incorrect by terminology. (c) and (d) add irrelevant conditions. (e) saturation is not a prerequisite; dehumidification can occur at many relative humidities.

Common Pitfalls:
Using lay terms in technical settings; precise vocabulary ensures clear communication among engineers.

Final Answer:
False