Pipeline loss calculation
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The circulating water is pumped to the highest floor of the workshop, at a height of about 17 meters, and then returns to the cooling tower. The total length of the pipes is around 160 meters, with approximately 10 elbows. What head capacity should the pump have?
Lack of flow rate, pipe diameter, and whether there are other fittings such as valves and tees, as well as the maximum pressure drop experienced by water as it passes through the heat exchanger
Generally, the head loss per 100 meters of pipeline is 1 meter. The resistance loss associated with a single elbow is equivalent to that of 10 pipes, while a valve is considered to cause a head loss equivalent to that of 50 meters of pipeline. Since the number of valves isn’t specified in your conditions, the head pressure required by the pump must be at least 20 meters or more
A member of this forum previously shared a formula for calculating pump head: Pump head calculation http://bbs.hcbbs.com/thread-188256-1-1.html. Using the formula above, the head should be between 25m and 30m
It is also necessary to see how much pressure the system still requires once it reaches the cooling tower.
What was said on floor 5 is incorrect. I remember that 1 elbow is equivalent to 30D; ball valves require 30D, straight tees require 20D while bypasses require 60D. Ordinary globe valves need 340D. The pipeline lengths are converted into their equivalent values, and then the frictional pressure loss in the pipeline, the static pressure, and the velocity pressure loss are calculated. If you haven’t done this before, you can use the formula from HGT_20570.7 for calculating pipeline pressure losses. This post was last edited by Pseudo Xiao Bao on 2009-3-26 at 21:09
Bro, why can’t I access the website you gave me?
Based on experience, 25 to 30 meters should work. It can also be calculated using the formula for the 5th floor, with an additional safety factor added in
Thank you! I need this information as well. I have a pipe with a length of around 72 meters, 12 90-degree elbows, 2 valves, and 4 pairs of flanges. The oil tank is 14 meters high and has a pipe diameter of 100. How much horsepower does the pump need, and what will be the pressure loss? Please calculate it for me too