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The effect of the capture jet on the performance of ventilated ceilings in commercial kitchens.

Uticaj zahvata mlaza na karakteristike plafonske ventilacije u komercijalnim kuhinjama./ The effect of the capture jet on the performance of ventilated ceilings in commercial kitchens.

Author(s) : KOSONEN R.

Summary

The efficiency of the exhaust system should be specially emphasized with ventilated ceiling systems where the exhaust is located at the ceiling level. The simulations conducted show that the capture jet improves the total effectiveness of the ventilated ceiling. Indoor air quality is enhanced in an energy efficient manner. The capture jet assists the function of the exhaust unit and the plume extracts effectively. Without the capture jet, a portion of the plume is re-circulated to the working area. That increases the concentration of the contaminant level in the occupied zone. The simulation conducted indicates that the average contaminant level of the whole occupied zone is 40% lower with the capture jet. With the ceiling height of 2.3 m, the capture and containment efficiency can be as high as 85-90% and with a 2.6 m ceiling height 80-85%, respectively. These values are quite reasonable compared with the capture efficiency of a default hood in the former German code of practice (VDI).

Details

  • Original title: Uticaj zahvata mlaza na karakteristike plafonske ventilacije u komercijalnim kuhinjama./ The effect of the capture jet on the performance of ventilated ceilings in commercial kitchens.
  • Record ID : 2007-0339
  • Languages: Serbian
  • Source: Zbornik radova pisanih za 36. kongres o klimatizaciji, grejanju, hladenju + CD-ROM./ Proceedings of the 36th International HVAC&R congress + CD-ROM.
  • Publication date: 2005/11/02

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