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Air Distribution and Microenvironment Evaluation of a Desktop Task Conditioning System

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dc.creatorZheng, G.
dc.date.accessioned2007-05-07T20:49:52Z
dc.date.available2007-05-07T20:49:52Z
dc.date.issued2006
dc.description.abstractTask conditioning aims to provide each occupant with personalized clean air direct to the breathing zone. The microenvironment of a typical office workplace, consisting of two desktop task conditioning systems (a Horizontal Desk Grill (HDG) and Vertical Desk Grill (VDG)) were studied by numerical simulation. Numerical simulation by k- 3-D turbulent flow was separately conducted to study the influence of supply velocity on the microenvironment of these two desktop task conditioning systems. Three task conditioning velocities were studied. Temperature and velocity distribution, Draught Rating (DR) and Predicted Percentage of Dissatisfied (PPD) of the room and workstation were applied to study the performance of task air conditioning. Results show that the performances of HDG and VDG are almost the same. Results also show that task conditioning can provide excellent working environment when supply velocity is well designed. The supply velocity of task conditioning can be set between 0.8-1.0 m/s. However, task conditioning may cause draught, and engineers should seriously consider this problem. The results can provide important references for design and optimization of the task conditioning system.en
dc.format.extent1615804 bytesen
dc.format.mimetypeapplication/pdf
dc.identifier.otherESL-IC-06-11-25
dc.identifier.urihttps://hdl.handle.net/1969.1/5414
dc.language.isoen_US
dc.publisherEnergy Systems Laboratory (http://esl.tamu.edu)
dc.publisherTexas A&M University (http://www.tamu.edu)
dc.subjecttask air conditioningen
dc.subjectnumerical simulationen
dc.subjectairflowen
dc.subjectHDGen
dc.subjectVDGen
dc.subjectmicroenvironmenten
dc.titleAir Distribution and Microenvironment Evaluation of a Desktop Task Conditioning Systemen

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