Calculate Motor Pump Size

  • Calculate Size of Pump having following Details
  • Static Suction Head(h2)=0 Meter
  • Static Discharge Head (h1)=50 Meter.
  • Required Amount of Water (Q1)=300 Liter/Min.
  • Density of Liquid (D) =1000 Kg/M3
  • Pump Efficiency (pe)=80%
  • Motor Efficiency(me)= 90%
  • Friction Losses in Pipes (f)=30%

Calculations:

  • Flow Rate (Q) =Q1x1.66/100000 =300×1.66/100000= 0.005 M3/Sec
  • Actual Total Head (After Friction Losses) (H) = (h1+h2)+((h1+h2)xf)
  • Actual Total Head (After Friction Losses) (H)=50+(50×30%)= 65 Meter.
  • Pump Hydraulic Power (ph) = (D x Q x H x9.87)/1000
  • Pump Hydraulic Power (ph) = (1000 x 0.005 x 65 x9.87)/1000 =3KW
  • Motor/ Pump Shaft Power (ps)= ph / pe = 3 / 80% = 4KW
  • Required Motor Size: ps / me =4 / 90% = 4.5 KW
  • Required Size of Motor Pump = 4.5 HP or 6 HP

About Jignesh.Parmar
Jignesh Parmar has completed M.Tech (Power System Control), B.E(Electrical). He is member of Institution of Engineers (MIE) and CEng,India. Membership No:M-1473586.He has more than 16 years experience in Transmission -Distribution-Electrical Energy theft detection-Electrical Maintenance-Electrical Projects (Planning-Designing-Technical Review-coordination -Execution). He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. He has published numbers of Technical Articles in “Electrical Mirror”, “Electrical India”, “Lighting India”,”Smart Energy”, “Industrial Electrix”(Australian Power Publications) Magazines. He is Freelancer Programmer of Advance Excel and design useful Excel base Electrical Programs as per IS, NEC, IEC,IEEE codes. He is Technical Blogger and Familiar with English, Hindi, Gujarati, French languages. He wants to Share his experience & Knowledge and help technical enthusiasts to find suitable solutions and updating themselves on various Engineering Topics.

2 Responses to Calculate Motor Pump Size

  1. Muhammad Mohsin Ansari says:

    thanks…………Jignesh.Parmar

  2. Subhabrata Sarkar says:

    Thank you sir for your new updates.Your every post helps us to build our technical skills.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: