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JJW Siganto : Ecolibrium : :
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VAV VVVT VAV . . VVVT . VVVT . VAV VVVT . VVVT VAV . : VVVT . . . VAV . VAV VAV . . . . References 1 Hartman, T.; “Improving VAV Zone Control”, ASHRAE Journal,Vol 45, No. 6, pp 24 – 32, (2003).
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Matt Matt Lawrence Lawrence : ASHRAE ASHRAE Journal Journal :
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)( . . . . . HVAC . . . Bibliography ASHRAE Guideline 1- 1996, The HVAC Commissioning Process. BellSouth Telecommunications Technical Support. Building Facility Management System Standards. Atlanta, Ga.: BellSouth Inc. Telecommuni-cations Moult, Rob. 2000. “Fundamentals of DDC.” ASHRAE Journal 42(11): 19– 22.
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Aaron R. Kelly : Plumbing Systems & Design :
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Joseph V. Messina : Plumbing Systems & Design :
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Thorp Thomas : JLC : :
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downstream of the air cleaner whenever possible to reduce possible abrasion of the blades and to create a negative pressure in the air cleaner to minimize air leaks of contaminated air. 11. This velocity is the air velocity at the point of contaminant generation upstream of a hood. 13. This minimum velocity is the velocity required to move particulates without settling out of the airstream. 16. This organization publishes the "Industrial Ventilation: A Manual of Recommended Practice." 18. This exhaust device must be designed and located to prevent the re-entrainment of discharged air into the supply system inlets. 19. This type of contaminant source creates contaminant movement with an air jet or due to particle flow.
Answer
ACROSS 1. A theoretical means to evaluate thermal plume parameters based on equations for energy and mass balances. 3. This hood effectiveness should be high but would be difficult and costly to obtain up to 100%. 8. This type of contaminant system mobility classification uses fixed hood positions. 9. This type of hood should not be used where the operator must bend over a tank or process. 10. This equipment is usually selected to prevent reentrainment of contaminants to the work areas and to reclaim usable material along with other reasons. 12. This type of hood should be considered only when overhead or sidedraft hoods are impractical. 14. This organization publishes Standard 203 "Field Performance Measurement of Fan Systems." 15. Another name for "heat" sources of contaminants. 17. This type of contaminant system hood-type classification provides better and more economical contaminant control because the exhaust rates and the effects of the room air currents are minimal compared to those for nonenclosing hood types. 20. The pressure losses that occur as air enters a hood. 21. This exhaust volumetric flow rate is a term used for
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the airflow rate that allows contaminant capture. 22. This type of contaminant is generated by welding and typically requires a transport velocity of between 2,000 to 2,500 fpm. DOWN 2. These are preferred to be round because the round shape offers a more uniform air velocity to resist settling of material and because the round shape can generally withstand higher static pressures than a rectangular shape. 3. This velocity is at the center of the contaminant capture airstream of a nonenclosing hood. 4. This type of exhaust ventilation may be needed when a local exhaust ventilation system may not be possible due to size or mobility or the process. 5. The transfer of this from the exhaust air to the replacement air may be economically feasible if the location of the exhaust and replacement air is nearby, there is sufficient temperature difference between the two airstreams, and the nature of the exhaust airstream contaminants allows some sort of heat transfer device to be used. 6. These types of hoods are a nonenclosing type combined with compact, linear or radial air jets. 7. This air-moving device should be located
Larry and Suzanne Weingarten : Home Energy :
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Bradley Kurtz : ASHRAE Journal :
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David A. Sellers, PE : HPAC :
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Duncan Duncan Hill Hill : Home Home Energy Energy :
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Ronald J. Wilkinson : HPAC :
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Roy C.E. Ahlgren : Plumbing Systems & Design :
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Roy C.E. Ahlgren : Plumbing Systems & Design :
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Roy Ahlgren : ASHRAE Journal :
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