100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Nate Formulas $10.49   Add to cart
Quickly navigate to
Preview
  2.  
  3. Nate
  4.  
  5. Nate

Exam (elaborations)

Nate Formulas
 2 views  0 purchase
  • Course
  • Nate
  • Institution
  • Nate

Nate Formulas Fan law: Pulley size Formula - answerDPm X RPMm = DPf X RPMf DP=Diameter of Pulley f=Fan or Driven m=Motor or Driver Actual Brake HP of a motor - answerBHP = HPnp( Amps/FLA) np = Name plate Synchronizes speed of a motor - answer7200 / # of poles Convert Velocity pressure (Vp) i...

[Show more]

Preview 1 out of 3  pages

Document information

  • September 17, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

Written for

  • Nate
  • Nate

Seller

avatar-seller
Brightstars

Content preview

©THEBRIGHTSTARS 2024/2025


Nate Formulas



Fan law: Pulley size Formula - answer✔DPm X RPMm = DPf X RPMf


DP=Diameter of Pulley f=Fan or Driven
m=Motor or Driver

Actual Brake HP of a motor - answer✔BHP = HPnp( Amps/FLA)


np = Name plate

Synchronizes speed of a motor - answer✔7200 / # of poles

Convert Velocity pressure (Vp) into Feet Per Minute (FPM) - answer✔FPM = 4005(sqrt of Vp)

Convert V(velocity) into CFM - answer✔CFM = Asqft X Vfpm


Asqft = Area of the ductwork in square feet


Vfpm = Velocity in Feet Per Minute

Tp(total pressure) equals - answer✔Tp = Static (Sp) + Velocity (Vp)

The formula to figure the BTUH of an ac system using field measurements - answer✔BTUH =
4.5(CFM) x (Delta Enthalpy)

Fan law: Basic fan law formula - answer✔BHP2 = BHP1 X ((RPM2 / RPM1)cubed)
Shows that required power of a motor varies by the Cube of the speed increase of that motor.

The formula to figure the CFM of a Gas furnace using field measurements. - answer✔CFM =
BTUH(output) / 1.08 X Delta T

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Brightstars. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

76658 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.49
  • (0)
  Add to cart