Duct Sizing vs. Airflow (CFM) – Why It Matters in HVAC Design Proper duct sizing is not just math—it’s the foundation of an efficient HVAC system! Here's a quick reference on how airflow (in CFM) increases with duct diameter: 📕 Quick Reference Table ✦ 4" ➤ 20 CFM ✦ 6" ➤ 80 CFM ✦ 10" ➤ 300 CFM ✦ 14" ➤ 740 CFM ✦ 20" ➤ 1875 CFM And so on... Why This Matters: 1. Energy Efficiency Undersized ducts = high static pressure = increased fan energy use. 2. Comfort & IAQ Improper airflow leads to hot/cold spots and poor indoor air quality. 3. Noise Control Right sizing reduces turbulence and noise in the system. 4. Cost Optimization 💰 Correct duct sizing avoids overspending on oversized systems or retrofits. 📗 Did You Know? ➡️ A 1-inch increase in duct diameter can make a major difference in airflow (and your system's efficiency). ➡️ Improper duct design is one of the top causes of HVAC system failure or inefficiency. ✿ Let’s make HVAC design sm...
Maintenance Policies – Preventive Maintenance Unit-II
Introduction to Preventive Maintenance
This unit covers the fundamental principles of preventive maintenance, highlighting the importance of regular inspections, timely repairs, and consistent monitoring to avoid unexpected equipment failures. Implementing effective maintenance policies ensures that assets operate efficiently, reducing downtime and extending their lifespan.
Key Components of Preventive Maintenance
- Scheduled Inspections
- Regular Cleaning and Lubrication
- Timely Parts Replacement
- Performance Monitoring
Benefits of Preventive Maintenance
Preventive maintenance reduces the risk of equipment breakdown, lowers repair costs, and increases operational efficiency. By adhering to a structured maintenance schedule, organizations can ensure the long-term reliability of their assets.
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