The article cites several factors to consider when sizing orifice plates to improve accuracy and turndown. Among the sources of error in the measurement of orifice plate flow are temperature deviation and differential pressure (DP) m...
Restriction orifice or RO, in short, is a flow control instrument device whose primary function is to provide a restriction to the flow so that a controlled or restricted flow is achieved. Due to this restriction by the orifice plate, a pressure head drop from the upstream of the orifice to...
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As the valve orifice is smaller the pressure drop across the valve must be greater, leading to a lower pressure (and temperature) in the heat exchanger. Because of this, the heat transfer area required to achieve the same heat load must be increased. In other words, a large...
using two smaller units to meet the requirements may be a better option. This can also be beneficial when the flow requirement of the system falls in between the sizes of pumps or motors available. Using a 750 cc/rev unit to meet the requirements of a system requiring 620 cc/rev is very...
Apparatus for orienting and sorting mushrooms includes an inclined plate along which the mushrooms move, a tunnel for erecting an air dam in the path of movement of the mushrooms to singulate the mushrooms, and a photoelectric mechanism for sorting the m
The easiest way to implement speed control in a pneumatic actuator is to fit it with a needle valve, or a variable orifice, at the air pilot exhaust port. Electric actuators have geared motors and therefore it’s difficult (impossible, really) to control the speed of these actuators without...
First question is: Is it a restriction orifice or an orifice for measuring flow? First one: Use something along the API 520 for a PSV Second: Theres an ISO standard (and many other possible) - although i cant remember what no. There is a lot of difference between the two methods mostly...
Chopped glass fibers are commonly used as reinforcement materials in thermoplastic articles. Typically, such fibers are formed by pulling molten glass into filaments through a bushing or orifice plate, applying a sizing composition containing lubricants, coupling agents and film forming binder resins to ...
Think in a plate with a great thickness where instead a sharp-edge orifice, you drill an orifice with a rounded entrance and a throat diameter lower tan the entrance diameter, at some distance from the entrance. The relation of t/d (thickness/diameter) may be 5 or more. The nozzle ...