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WHERE DO WE GO FROM HERE (#5)?

The Process Technology and Operator Academy Posted on by

Chaos Ahead Traffic Sign

 

This is the last time I'm asking you this
Put my name at the top of your list

("The Last Time," by Taylor Swift, Gary Lightbody, & Jackknife Lee, 2013)

 

THE PTOA'S PROCESS VARIABLE PRESSURE FOCUS STUDY AREA CHECKLIST CHECKOFF 

Brilliant PTOA Readers and Students …

meaning those who are reading the PTOA Segments in the intended sequential order …

are more than halfway through the PTOA Process Variable Pressure Focus Study Area.

Unfortunately, Fred's head is spinning with jumbled up PV Pressure information.

The purpose of this PTOA Segment #203 is to acknowledge the progress PTOA Readers and Students have made conquering the subject matter within the PTOA PV Pressure Focus Study Area.

Whew! No doubt about it!

The PV Pressure takes a lot more brain power to understand than the PV Temperature!

Understanding the Process Variable Pressure has taken more brain power than understanding the Process Variable Temperature ever did! And there is a good reason for that observation:

Both Temperature and Pressure are "invisible" … but humans can feel a change in PV Temperature throughout the day. Humankind does not experience feeling the Gauge Pressures and Vacuum Pressures that are created in Process Industry with Rotating Equipment.

Learning about creating and decreasing the PV Pressure sure has required learning A LOT about Process Technology Equipment ... especially Rotating Equipment!

Good News! It's all downhill from here to cross the PV Pressure Focus Study Area Finish Line!

Keep on reading to review the PTOA PV Pressure Focus Study Area content which has already been mastered.

Spoiler alert!  Give Yourself a Round of Applause!

PTOA Readers and Students are already "knowed-up" on and competently understand the REAL-WORLD application of the hardest-to-learn PV Pressure concepts!

 

 

The PTOA PV Pressure Focus Study Area Outline is listed below.

A check mark in a block denotes content which has already been featured in the corresponding PTOA Segment link.

Fred, are you ready to check off all the important PV Pressure concepts you have learned?

Muy Bueno!

 

CHECKLIST CHECKOFF: THE PTOA PV PRESSURE FOCUS STUDY AREA 
PART 1: THE INTRODUCTION TO PV PRESSURE FUNDAMENTALS

  • Pressure is simply a Force (F) applied over a Surface Area (A).

    ☑Industrial Applications of the PV Pressure. (PTOA Segment #140).

  • ☑P is For Pressure! - the ISA Symbols for PV Pressure. (PTOA Segment #141)
  • ☑The Definitions of Pressure: P = Force/Area and Gravitational Force F=(Mass) X (Acceleration of Gravity). (PTOA Segment #142)
  • ☑The Difference between a Pound of Mass and a Pound of Force. (PTOA Segment #143)
  • ☑The Overlooked Assumptions that Allow Equating a  a Pound of Force to a Pound of Mass. (PTOA Segment #144).
  • ☑How to Calculate the Hydrostatic Pressure of Any Liquid in a Container. (PTOA Segment #145)
  • ☑Dams, Tanks, and Vessels are Examples of (Hydraulic) Head Pressure. (PTOA Segments #146 and #147)
  • ☑Common Conversion Factors Used in Process Industry for SI and English Units. (PTOA Segment #148)
  • ☑The Differences Between Absolute, Atmospheric, Gauge, and Vacuum Pressures and their respective industrial applications. (PTOA Segments #149, #150)
  • ☑

    A "Vacuum Pressure" is less than Atmospheric Pressure (14.7 psia=1 ATM).

    Vacuum Pressures, Creating Vacuum Pressures, Industrial Uses of Vacuum Pressures. (PTOA Segment #151)

  • ☑Predictable Gas and Liquid Behavior Called "Laws." (PTOA Segments #152, #153, and #154).

 

 

CHECKLIST CHECKOFF: THE PTOA PV PRESSURE FOCUS STUDY AREA
PART 2: THE INTERRELATIONSHIP OF THE PV PRESSURE WITH PV TEMPERATURE, PV FLOWRATE, AND PV LEVEL 

 

☑The PV Pressure/PV Temperature Relationship: (PTOA Segment #157)

    • ☑PV Pressure Impact on Boiling Point Temperature, Freeze Point Temperature, Condensation Temperature.
    • ☑Local Atmospheric Pressure and Boiling Point Temperature.
    • ☑Process Industry Examples that Use the PV Pressure/PV Temperature Relationship.

 

 

☑The PV Pressure and PV Flowrate Relationship: (PTOA Segment #158).

    • In any flowing fluid, when the Fluid Velocity increases, the sensed Pressure in the line Decreases ... and vice versa! Pressure and Fluid Velocity Swap!

      ☑The PV Pressure ↔ Fluid Velocity Swap. (PTOA Segment #159)

    • ☑"The Power of the Swap" makes it possible to infuse the PV Pressure into a flowing liquid!
    • ☑Delta P (aka ΔP, dp, Pressure Drop, Pressure Gradient) ... No Delta P=No Flow.
    • ☑Process Industry Examples that Use the PV Pressure/PV Flowrate Relationship.

 

 

  • The greater the level of liquid, the greater the hydrostatic Pressure sensed at the bottom of the tank!

    ☑The PV Pressure/PV Level Relationship: (PTOA Segment #160)

    • ☑The Hydrostatic Head (and potential Pressure Energy) of Stored Liquids.
    • ☑The PV Pressure/PV Level Relationship and Liquid/Vapor Equilibrium.
    • ☑Process Industry Examples that Use the PV Pressure/PV Level Relationship.

 

 

 

 

 

  • ☑The Relationship Between Rotating Equipment and Process Operators. (PTOA Segment #161)

 

  • ☑Review of the Physical Properties of Fluids (Density, Specific Gravity, Etc.). (PTOA Segment #162)

 

 

CHECKLIST CHECKOFF: THE PTOA PV PRESSURE FOCUS STUDY AREA 
PART 3: DEEP-DIVE INTO A CENTRIFUGAL PUMP ILLUSTRATES
HOW PRESSURE ENERGY CAN BE INFUSED INTO FLOWING LIQUIDS

 

 

CHECKLIST CHECKOFF: THE PTOA PV PRESSURE FOCUS STUDY AREA
PART 4: THE COMMON HARDWARE OF ROTATING EQUIPMENT
AND HOW OPERATORS TAKE CARE OF IT

 

 

CHECKLIST CHECKOFF: THE PTOA PV PRESSURE FOCUS STUDY AREA 
PART 5: COMMON PROCESS INDUSTRY DRIVERS/PRIME MOVERS

 

 

What was once foggy in the brain is now in the rear view mirror! Drive On!

Shazam!

That's an impressive list of PTOA PV Pressure Focus Studies that PTOA Readers and Student have behind them!

 

 

 

 

Here's what is coming into focus next:

 

THE PTOA PV PRESSURE FOCUS STUDY AREA 
PART 6: THE FORM AND FUNCTION OF PUMP FAMILY TREE MEMBERS 

Centrifugal Rotating Equipment has a range of Capacity (Gallons per Minute). Positive Displacement Rotating Equipment has ONE Capacity.

  • The Two Main Classifications of Pumps.
  • Pros and Cons of Dynamic and Positive Displacement Pumps.
  • PTOA Dynamic Pumps Focus Study: 
    • Dropping the Mic on Dynamic Centrifugal Pumps and Axial Pumps.
    • Special Dynamic Pumps Use the "Venturi Effect" (aka the PV Pressure↔Fluid Velocity Swap).
    • Artificial Lift Pumps.
  • PTOA Positive Displacement Pumps Focus Study:
    • Form and Function of Positive Displacement Pumps and How to Determine Pump Volumetric Efficiency.
    • Single-Acting and Double-Acting Reciprocating-Action PD Pumps.
    • Rotary-Motion Positive Displacement Pump Overview including Intro to Hydraulic Pumps.
    • Rotary-Motion PD Gear Pumps.
    • Rotary-Motion PD Vane Pumps.
    • Rotary-Motion PD Screw Pumps.
  • Vacuum Pumps.

 

 

THE PTOA PV PRESSURE FOCUS STUDY AREA 
PART 7: THE FORM ANDFUNCTION OFCOMPRESSOR FAMILY TREE MEMBERS 

  • Introduction to Dynamic and Positive Displacement Compressors and their ISA Symbols.
  • The Process Industry Jobs Performed by Compressors and Gases that have been Compressed.
  • Matching Compressor Job to Compressor Type.
  • PTOA Dynamic Compressor Focus Study:
    • Single Stage Centrifugal Compressors.
    • Multi-Stage Centrifugal Compressors.
    • Axial Flow Compressors.
    • Causes and Prevention of Dynamic Compressor Surge.
  • PTOA Positive Displacement Compressor Focus Study:
    • Reciprocating Positive Displacement Compressors.

 

 

THE PTOA PV PRESSURE FOCUS STUDY AREA
PART 8: COMMON PV PRESSURE INSTRUMENTS USED TO DETECT/MEASURE
AND TRANSDUCE/TRANSMIT THE PV PRESSURE TO HUMANKIND

PTOA PV Pressure Common Detecting/Measuring/Transmitting Instruments Focus Study:

  • Form and Function of "Wet" Pressures Sensors (aka, Manometers).
  • Form and Function of "Dry" Pressure Sensors:
    • Diaphragm and Bellows Sensors.
    • Bourdon Tubes, Hysteresis, and Dead Weight Tester.
  • Form and Function of Pressure Switches and Intro to Discrete (On-Off) Control.
  • Form and Function of Electronic Pressure Transducers/Transmitters.

 

:

KEEP ON READING!

The finish line to the PTOA PV Pressure Focus Study Area is in sight!

 

Take your Protein Pill and Put Your Helmet Back On!

ONWARD!

 

©2020 PTOA Segment 0203
PTOA PV PRESSURE FOCUS STUDY AREA OUTLINE CHECKOFF

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