Experts, please take a look at the diagram and help analyze the feasibility of these three types of piping connections. Thank you so much!
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Experts, please help analyze the advantages and disadvantages of these three types of pipeline connections. Thank you so much!
Let the resistance of each heating pipe be R. In Plan 1, the resistance is R/12; in Plan 2, it is 3/4R. Plan 3 has the lowest resistance. The question is: will steam still flow through the various branches? The first two have their respective advantages and disadvantages, while the third option is not advisable.
In terms of steam utilization efficiency, the second option is the best, as there is no steam leakage due to short circuits. In terms of pressure drop, the third option has the highest value, but short circuits occur very easily. Taking everything into account, it is recommended to use the first option, which is also the most common method for connecting heating pipes
This post was last edited by A13562570752 on 2019-12-16 at 13:17. All solutions have uneven flow resistance; the resistance can be balanced by alternating inlet and outlet directions.
Thank you for your advice! I also want to ask whether water hammer phenomenon might occur with the first option?
Thank you for your advice! I also want to ask whether water hammer phenomenon might occur with the first option?
Flow in from the top left and out from the bottom right, to ensure uniform fluid resistance in each branch and reduce short circuits.
Option 2 is feasible: throttle orifice plates should be installed on the branch pipes to control the steam flow. Branch pipes should preferably be connected using elbows, as fillet welds cannot withstand much stress; for connections between the main and branch pipes, 3-way fittings are recommended. By the way: Use drawings made in PCCAD, right? !
Option 1 requires installing control valves on each road. Also, have you considered using steam to heat water, and then employing a pump or natural pressure for heating? Wouldn’t that be better? The approach adopted is to connect them in series at the bottom of the radiators, which is the commonly used heating method nowadays. For reference.