---
title: "How large must a heating duct be if air moving \\( 3 \\ \\frac{\\text{m}}{\\text{s}} \\) along it can replenish the air in a room of \\( 300 \\ \\text{m}^3 \\) volume every \\( 15 \\) minutes? Assume the air’s density remains constant."
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url: "https://nerd-notes.com/ubq/87398/"
date_modified: "2025-04-14T02:14:28+00:00"
---

# How large must a heating duct be if air moving \( 3 \ \frac{\text{m}}{\text{s}} \) along it can replenish the air in a room of \( 300 \ \text{m}^3 \) volume every \( 15 \) minutes? Assume the air’s density remains constant.

How large must a heating duct be if air moving \( 3 \ \frac{\text{m}}{\text{s}} \) along it can replenish the air in a room of \( 300 \ \text{m}^3 \) volume every \( 15 \) minutes? Assume the air’s density remains constant.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/87398/*