Kitchen Hoods Comparison Studies In this section a

By admin on November 21st, 2007

Kitchen Hoods Comparison Studies

In this section a variety of techniques and research
findings are presented that demonstrate the
performance and value that Halton s products offer the
end-user. There is a discussion on the ineffectiveness
of some hood designs offered by Halton s competitors
followed by a discussion of how capture efficiency
impacts the energy use, and energy bills, of the end-
user.
KVI Case Study
Halton is using state-of-the-art techniques to validate
hood performance. These include modeling of
systems, using CFD, Schlieren imaging systems, and
smoke visualization. All the test results presented here
have been validated by third-party research.
Halton s standard canopy hood (model KVI) utilizes
Capture Jet technology to enhance hood
performance, and consequently hood efficiency,
versus the competition.
In this case study, the KVI hood has been modelled
using CFD software. Two cases were modelled for this
analysis: one with the jets turned off in effect this
simulates a generic exhaust only canopy hood and a
second model with the jets turned on. As can be seen
from observing figures 13 and 4, at the same exhaust
flow rate, the hood is spilling when the jets are turned
off and capturing when they are turned on.
The same studies were conducted in the third party
laboratory. The Schlieren Thermal Imaging system was
used to visualise the plume and effect of Capture
Jet. As one can see the CFD results are in good
agreement with the Schlieren visualisation