National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Floor-Supply Displacement Ventilation System.

PB2005102843

Publication Date	2004
Personal Author	Chen, Q.; Lau, J.; Kobayashi, N.
Page Count	128
Abstract	This research is to improve the design of the floor-supply displacement ventilation system for the removal of a high cooling load without draft risk. The research will propose measures to reduce cross contamination among workers in large offices and workshops. More specifically, the objective of the research is to: Improve the design of the floor-supply displacement ventilation system for a higher cooling load while the system can still provide an acceptable comfort level and can be energy effective; Optimize the ventilation system to minimize the risk of cross contamination with suitable air supply and exhaust locations. The study will assess the indoor air quality, thermal comfort, and energy consumption of the floor-supply displacement ventilation system. The parameters to be studied include the diffuser type, perforated degree, ventilation rate, supply air temperature, exhaust location, floor insulation, ceiling height, furniture and partition arrangement, etc. The research will use numerical simulations through Computational Fluid Dynamics (CFD) technique to reduce the costs. Nonetheless, detailed and high quality experimental data will be obtained in a full-scale environmental chamber, and the data will be used to validate the CFD results.
Keywords	Ventilation systems Displacement Temperature Air velocity Air flow Thermal comfort Indoor air quality Computational fluid dynamics Diffusers Energy consumption Floor-supply displacement ventilation systems
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Purdue Univ., West Lafayette, IN. School of Mechanical Engineering.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
Title Note	Final rept. (30 Sep 01-29 Sep 04).
NTIS Issue Number	200513

Floor-Supply Displacement Ventilation System.

Floor-Supply Displacement Ventilation System.
PB2005102843

Publication Date	2004
Personal Author	Chen, Q.; Lau, J.; Kobayashi, N.
Page Count	128
Abstract	This research is to improve the design of the floor-supply displacement ventilation system for the removal of a high cooling load without draft risk. The research will propose measures to reduce cross contamination among workers in large offices and workshops. More specifically, the objective of the research is to: Improve the design of the floor-supply displacement ventilation system for a higher cooling load while the system can still provide an acceptable comfort level and can be energy effective; Optimize the ventilation system to minimize the risk of cross contamination with suitable air supply and exhaust locations. The study will assess the indoor air quality, thermal comfort, and energy consumption of the floor-supply displacement ventilation system. The parameters to be studied include the diffuser type, perforated degree, ventilation rate, supply air temperature, exhaust location, floor insulation, ceiling height, furniture and partition arrangement, etc. The research will use numerical simulations through Computational Fluid Dynamics (CFD) technique to reduce the costs. Nonetheless, detailed and high quality experimental data will be obtained in a full-scale environmental chamber, and the data will be used to validate the CFD results.
Keywords	Ventilation systems Displacement Temperature Air velocity Air flow Thermal comfort Indoor air quality Computational fluid dynamics Diffusers Energy consumption Floor-supply displacement ventilation systems
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Purdue Univ., West Lafayette, IN. School of Mechanical Engineering.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
Title Note	Final rept. (30 Sep 01-29 Sep 04).
NTIS Issue Number	200513