Manual N – Commercial Load Calculation for Small Commercial Buildings, 5th Edition

Manual N gives you a faster way to estimate heating and cooling loads for small and mid-size commercial structures, a simplified version of the procedure in the ASHRAE GRP 158 Load Calculation Manual. Manual N shows you how to use the Cooling Load Temperature Difference (CLTD) method to estimate heat gain through opaque surfaces and the cooling-load-factor method to estimate solar gains through glass.

Key Aspects:

• Basic principles of heat transfer, R-values, U-values, and heat transfer multipliers
• Calculating loads for individual structural components, rooms, and zones
• Time-of-day calculations
• Peak room loads versus peak block loads
• Indoor and outdoor design considerations
• Sensible and latent internal loads
• Wall, roof, ceiling, and partition heat gain and loss
• Heat gain and loss from glass, ducts, infiltration, and ventilation
• Humidification loads

Highlights:

• Dual Calculation Procedures
• Updated Standards and Practices
• Extensive Reference Materials
• Real-World Applications
• Enhanced Sensitivity Analysis

About Hank Rutkowski

Hank Rutkowski is a seasoned HVAC professional and the author of Commercial Applications, Systems, and Equipment (Manual CS®), published by the Air Conditioning Contractors of America (ACCA). Rutkowski’s extensive experience in the HVAC industry has equipped him with a deep understanding of system design and equipment selection for small and mid-sized commercial buildings. His work on Manual CS® reflects his commitment to providing practical, real-world solutions for HVAC professionals. Rutkowski’s contributions to the field are particularly valuable for those involved in designing HVAC systems for various commercial structures, including office buildings, schools, restaurants, and theaters. His manual serves as an essential resource for professionals seeking to enhance their knowledge and skills in commercial HVAC applications.

Other Works:

• Manual D – Residential Duct Systems
• Manual CS – Commercial Application, Systems, and Equipment
• Manual Q Commercial Low Pressure Low Velocity Duct System Design