kaskadenartig
English translation: cascade-like
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| 15:04 Jul 3, 2007 |
| German to English translations [PRO] Tech/Engineering - Biology (-tech,-chem,micro-) / Microbiological techniques | |||||||
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|  Selected response from: swisstell Italy Local time: 00:25 | ||||||
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| Summary of answers provided | ||||
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| 3 +2 | with cascading effect |
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| 4 | cascade-like |
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Answers
3 mins confidence: 
cascade-like Explanation: with cascade-like effect |
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1 hr confidence: peer agreement (net): +2
peer agreement (net): +2with cascading effect Explanation: The negative pressure can increase with cascading effect from the airlock to the interior rooms There are four types of airlocks, each suited to a particular type of application. The "cascading pressure airlock," for example, is the airlock type preferred by FDA when containment is not an issue. Used to separate clean areas from non-classified areas, pressurized air "cascades" from the cleanest to the less clean adjacent areas. In this application, the same quantity of air is supplied to and returned from the airlock. In the pressure sink airlock, negative pressure is maintained relative to all adjacent areas and all the air supplied to and infiltrated into the room is exhausted, thus also preventing cross-contamination between adjacent areas. In general, airlock cleanliness classification and airflow rate (air changes per/hour) should match the cleaner of the rooms being serviced, while also addressing the "cascading" principle. For example, a Class 10,000 room (60 air changes/hour) should be protected by an airlock at the same classification level and airflow rate. An exception to this, however, may be an airlock between a Class 10,000 room and a non-classified (95 percent ASHRAE) filtered area. In this case, the airlock should be classified as Class 100,000 (to maintain the "cascading" principle), while the airlock airflow rate should still be 60 air changes/hour. http://cr.pennnet.com/display_article/61842/15/ARTCL/none/no... The cascading pressure airlock is used to protect clean areas from adjacent areas with lower required cleanliness. Normally, in this type of airlock, the transfer from the cleaner area, which does not pose any issue with cross contamination, is pushed into an access hallway. http://hightech.lbl.gov/documents/CLEANROOMS/2004_Sep_A2C2.p... As the tubular members 2,3 rotate, the feed material is repeatedly raised and dropped to create a cascading effect. http://www.freepatentsonline.com/4306961.html |
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