Thank you all for the Valuable feedbacks!
I could spell out all the details here but i was only curious on the main question.
Yes the pumps is designed with manual isolation valves, drain valves for maintenance, pressure gauges at the discharge etc. The pumps also do come with expansion...
Thanks for the quick response!
Apologize for my poor drawing, this is a Grundfos CRN Pump, hopefully this image would be useful.
for NPSHr, it is about 4.24m, i believe it should not be a problem.
I am worried on the operating condition to stop the pump at minimum level.
Feed coming into...
Hi All,
Seeking some advice, in order to increase/maximize my retention time of the tank(hold up volume),
I am designing the suction of a vertical multistage centrifugal pump(CRN), with an "inverted elbow suction" within the FRP tank.
This principle basically helps to bring down the minimum...
Hi All, First of all thanks alot for all your inputs. Just to give more information,
The sampling is done continuously feeding into the online instruments, it is an online monitoring to measure certain parameters of the feed water before misc filters downstream etc.
It takes about 2.5...
What does this lift equate to in terms of either absolute pressure or m head of your liquid. (m head of liquid)
What is the vapour pressure and density of your product at sampling temperature? (Density 1030kg/m3, 2.4kPa, Seawater)
What is your elevation above sea level?
Is the liquid exposed...
Dear All,
I am looking for a type of sampling pump (about 100 L/hr) that has a high suction lift of about 9m (Already considered all the loses).
As far as i know that some peristaltic pumps can achieve such a high suction lift. Is there any special types/alternatives of pumps capable of...
Hello all,
If lets say my tank is 12m tall, my pump rated 7bar, shut off is at 9.1 bar.
While not considering water column/density, where 1bar = 10m, my discharge pressure instruments can be designed as
min Pressure - 0
Normal Pressure - 7+1.2 = 8.2
Max - 9.1+1.2 = 10.3
Is this correct...
Hello TD2K thanks alot for your detailed explanation!
Regarding Compressor Duty Factor, what is the basis of choosing such value? example.. 60% = "60% of time running and 40% of the time idling"
Hello All,
I am quite new to this sizing of air compressors and wondering if anyone could advice me on my understanding. Thank you!
1. Lets say the assumptions for the Duty factor and cycles are correct. Why am i getting a Air receiver volume of 30730L, while my Air used in idle time is...
Hello LittleInch and bimr,
Thanks for your inputs on this question, i guess i have been too focused on the bernouli's and putting those away and think logically of the losses is a better option. As i have just been into the industry not too long ago and hope to learn more.
Here's a question...
Hello experienced engineers out there,
I am curious what is the difference between Bowl and pump efficiency. When i am evaluating some quotes, some suppliers do quote,
bowl/pump efficiency : 88%/87.7%
Thanks in advance!
Hello All,
Thanks for the great advices. Yes this is for industrial application. Let me break it down.
It is a chemical dosing pump that is used to pump NaOCL into 4 identical seawater intake pipes(similar depth) which is more than 1 km off shore and 20m deep(It is an open pipe to allow...
Hello all,
I am unsure of how to size a pump when i have multiple discharge points. I have always done 1 suction 1 discharge which is easy and straight forward with only 2 points to consider.
Now i have 5 points to consider..
To keep it simple,
One suction point from an atmospheric tank
4...
