To achieve 5 ACH in a 200 m3 room, what is the required air supply rate in m3/h?

Prepare for the Bioenvironmental Engineering Exam. Use multiple-choice questions and detailed explanations to study efficiently for your exam and enhance knowledge in environmental safety and engineering.

Multiple Choice

To achieve 5 ACH in a 200 m3 room, what is the required air supply rate in m3/h?

Explanation:
Air changes per hour (ACH) tells you how many times the room’s air volume is replaced in one hour. To meet 5 ACH in a room with a volume of 200 m3, you need a supply flow equal to 5 times the room volume: 5 × 200 = 1000 m3/h. So the required air supply rate is 1000 m3/h. For context, 400 m3/h would give 2 ACH, 600 m3/h would give 3 ACH, and 1200 m3/h would give 6 ACH, so 1000 m3/h best matches 5 ACH.

Air changes per hour (ACH) tells you how many times the room’s air volume is replaced in one hour. To meet 5 ACH in a room with a volume of 200 m3, you need a supply flow equal to 5 times the room volume: 5 × 200 = 1000 m3/h. So the required air supply rate is 1000 m3/h. For context, 400 m3/h would give 2 ACH, 600 m3/h would give 3 ACH, and 1200 m3/h would give 6 ACH, so 1000 m3/h best matches 5 ACH.

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