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Colby, Kansas | A conventional manifold (very similar to the one you pictured) and a vertical dam manifold were compared by K-State Ag Engineering. The paper is too large to attach if your interest email me. Summarized:
Conclusions from The Paper
1. With the conventional manifold without the inlet orifice,
the bottom inlet produced lateral CVs of 8 to 10%,
numerically lower than the 15 to 20% CV’s for the top
inlet.
2. At the flows tested, restrictor hose barbs [2.4 mm ID
(0.09 in.)] greatly increased pressure in the conventional
manifold, but had little influence on uniformity of lateral
distribution.
3. The vertical dam manifold produced lateral CVs of 10 to
13%.
4. As manifold pressure is increased, either by the use of
restrictor outlet barbs or the vertical dam manifold, hose
length becomes less significant. If the ratio of manifold
pressure to knife pressure is 7 or higher, hose length
variations of up to 4:1 have a negligible influence on flow
rate.
5. When using a top feed inlet and restricted hose barbs,
evidence suggests that higher NH3 velocity at the
manifold inlet tends to improve uniformity of lateral
distribution. | |
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