States that packaged rooftop unit (RTU) air conditioners can cause objectionable noise and vibration in acoustically-sensitive spaces. Complaints are caused by direct noise transmission through the roof, structure- borne vibrations, duct-borne fan noise, rumble and duct break-out. Maintains that proper location of the RTU is the most cost-effective design technique for avoiding acoustical problems. Focuses on RTU location with respect to structural stiffness and architectural space planning. Deals with equipment characteristics and potential acoustical problems. Gives cursory mechanical design guidelines for quiet, vibration-free RTU installations. Considers applicable acoustical rating and specification standards for RTUs.
KEYWORDS: Designing, air conditioning, noise, roof mounted, acoustics, vibration, packaged air conditioning units
Citation: Symposium, ASHRAE Transactions, vol.97, Pt. 1, New York 1991
Product Details
- Published:
- 1991
- Number of Pages:
- 5
- File Size:
- 1 file , 810 KB
- Product Code(s):
- D-18416
