According to ASHRAE 55, what is the unwanted local cooling of the body caused by air movement?

Prepare for the Certified Indoor Environmentalist (CIE) Exam. Study effectively with flashcards and multiple choice questions. Each question includes hints and explanations to enhance understanding. Ace your exam with confidence!

Multiple Choice

According to ASHRAE 55, what is the unwanted local cooling of the body caused by air movement?

Explanation:
Moving air that chill you locally is what ASHRAE 55 calls a draft. This term specifically describes the unwanted cooling sensation on the body caused by airflow over the skin, especially at comfortable room temperatures where you wouldn’t expect to feel cold. Convection is the general process of heat transfer by the motion of air, but the uncomfortable, localized sensation from that moving air is labeled as draft. Evaporative cooling comes from moisture on the skin evaporating and cooling you, which isn’t the direct result of air movement itself. Radiant heat loss is heat transfer by radiation from warm surfaces to your body, not driven by air movement.

Moving air that chill you locally is what ASHRAE 55 calls a draft. This term specifically describes the unwanted cooling sensation on the body caused by airflow over the skin, especially at comfortable room temperatures where you wouldn’t expect to feel cold.

Convection is the general process of heat transfer by the motion of air, but the uncomfortable, localized sensation from that moving air is labeled as draft. Evaporative cooling comes from moisture on the skin evaporating and cooling you, which isn’t the direct result of air movement itself. Radiant heat loss is heat transfer by radiation from warm surfaces to your body, not driven by air movement.

More practice questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy