Regarding the issue of pipe flow velocity
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A heat storage device; the ethylene glycol flow rate in the branches designed by foreigners is 5 m/s, while it reaches 10 m/s in the main pipes. This isn’t an engineered project, but can the flow rate really be this high? Such a high flow rate results in extremely high resistance; has anyone encountered situations where energy consumption had to be increased in order to reduce the space occupied by the pipes?
Yes, such high flow rates result in significant flow resistance; they are not considered economical flow rates, and the pumping pumps required will need to have a very high head. But for a pilot plant, as long as it can meet the operational requirements, it’s fine.
Sacrificing energy consumption and reducing space requirements is a common practice in certain testing setups, such as pilot-scale devices or even laboratories. It is also seen in pilot plant facilities, but less frequently. Such devices share a common characteristic: limited space, limited funding, frequent start-up and shutdown cycles. Once built, they are not operated on a continuous basis; they may be used only occasionally, or even just once, after which they are discarded. . . . There’s no need to pay for electricity yourself; it doesn’t matter if a little more is spent. This mindset is common with such devices. . . Foreigners are also human beings, and humans make mistakes; maybe it was just some kid who made a mistake. . . Either is possible; there’s no need to worry about it. .
First, determine whether this flow rate meets the process requirements?