MEBS6008 Environmental Services II

Home | What's New | Schedule | Assignments

Space Air Diffusion II

1.  Cold Air Distribution

• Advantages and drawbacks
• Design considerations
• Characteristics

2.  Displacement Flow

• Displacement ventilation
• Airflow patterns and performance
• Stratified model
• Design procedure

3.  Underfloor Air Distribution

• Upward flow design
• Design factors
• Advantages and disadvantages

[Download PowerPoint file (1.1 MB)]

---

Video Presentation:

• Underfloor Air Distribution [videorecording, 90 min.], American Standard Inc. and Trane, La Crosse, Wiscosin, 2003. [AV 697.93 U55]
• Introduction to underfloor air distribution (0 to 29:20 min.)
• System components & design considerations (30 min. to 90 min.)

References:

• Bauman, F. S. and Daly, A., 2003. Underfloor Air Distribution Design Guide, American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc., Atlanta, GA. [697.9312 B34]
• Chen, Q. and Glicksman, L., 2003. System Performance Evaluation and Design Guidelines for Displacement Ventilation, American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc., Atlanta, GA. [697.9 C51]
• Underfloor air distribution: Turning air distribution upside down, by Dennis Stanke, 2001. [Trane Engineers Newsletter][PDF]

Web Links:

• Price HVAC (equipment catalogue and design guide)
• Displacement Ventilation Design Guide
• Low Temperature Products
• Underfloor Ventilation Design Guide
• FlexibleSpace System [AET]
• Underfloor Air Technology [Center for the Built Environment, University of California, Berkeley]

---

| Created: Nov 2004 | Update: 8 Mar 2005 | By: cmhui@hku.hk |