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Process with Pat
Дания
Добавлен 24 мар 2021
Hi! Welcome to Process with Pat. I’m a passionate process engineer with industry experience in operational, service, design, and commissioning environments. This is where I share my practical experience and know-how. I want you to leave my channel more knowledgeable, confident, motivated and, most importantly, curious.
The goal is for you to leave thinking, “Oh! That’s why…”
Let’s Learn Together.
This is the place to come for perspective and to ask stupid questions. I am not perfect! I do not claim to be an expert and I continue to learn daily. I have made, and will continue to make mistakes. Point them out and let’s share the
knowledge.
Greater Than The Sum Of Our Parts.
Use what you learn here to make small, but continuous improvements. It’s easy to feel hopeless trying to solve global problems. Your job is not to solve the world’s problems - sort out your own plant and our combined efforts will turn into something huge.
The goal is for you to leave thinking, “Oh! That’s why…”
Let’s Learn Together.
This is the place to come for perspective and to ask stupid questions. I am not perfect! I do not claim to be an expert and I continue to learn daily. I have made, and will continue to make mistakes. Point them out and let’s share the
knowledge.
Greater Than The Sum Of Our Parts.
Use what you learn here to make small, but continuous improvements. It’s easy to feel hopeless trying to solve global problems. Your job is not to solve the world’s problems - sort out your own plant and our combined efforts will turn into something huge.
Normal cubic meters
A primer on using normal cubic meters in process engineering.
00:00 Liquids are great
01:12 Gases aren't
03:05 What is normal?
04:37 Pressure changes
06:18 Composition changes
08:04 Notation
Process with Pat is the place to come for perspective and to ask stupid questions. I want you to leave more knowledgeable, confident, motivated, and most importantly, curious. I also want to invigorate a field that seems tired and uninspiring, at least if you get your perspective from internet forums. These are not lectures. This is a place for you to leave thinking “Oh! That’s why...”
This channel is not only for chemical engineers - anyone who works with processes should be able to find something of value ...
00:00 Liquids are great
01:12 Gases aren't
03:05 What is normal?
04:37 Pressure changes
06:18 Composition changes
08:04 Notation
Process with Pat is the place to come for perspective and to ask stupid questions. I want you to leave more knowledgeable, confident, motivated, and most importantly, curious. I also want to invigorate a field that seems tired and uninspiring, at least if you get your perspective from internet forums. These are not lectures. This is a place for you to leave thinking “Oh! That’s why...”
This channel is not only for chemical engineers - anyone who works with processes should be able to find something of value ...
Просмотров: 11 723
Видео
Process temperature & thermocouples
Просмотров 2,7 тыс.Год назад
An idiot's guide and demo to how we commonly measure process temperatures in chemical engineering. 00:00 Leave my face alone 00:18 This is a thermcouple and my kitchen 01:20 Demo 05:40 Plotting our findings 06:04 ITS-90 06:44 Cold junction compensation ITS-90 (NIST): srdata.nist.gov/its90/main/ Process with Pat is the place to come for perspective and to ask stupid questions. I want you to leav...
What they won't teach you about chemical engineering
Просмотров 16 тыс.2 года назад
I hope that this offers a sobering, uncensored, but hopeful view of the industry that young chemical engineers find themselves going into. 00:00 Your aspirations 02:02 Operations 03:07 Tech & licensing 05:12 EPC's 06:57 What to do with this information Music: Lemonseven by septahelix (c) copyright 2022 Licensed under a Creative Commons Attribution (3.0) license. dig.ccmixter.org/files/septaheli...
Think like a chemical engineer
Просмотров 7 тыс.2 года назад
These are the principles I use in my day-to-day working as a chemical process engineer. 00:00 Intro 00:28 Principle 1 01:47 Principle 2 03:15 Principle 3 Process with Pat is the place to come for perspective and to ask stupid questions. I want you to leave more knowledgeable, confident, motivated, and most importantly, curious. I also want to invigorate a field that seems tired and uninspiring,...
System curves with recycle lines
Просмотров 6 тыс.2 года назад
I remember learning about recycle lines in one of my process engineering courses, but it was primarily about mass & component mass balances. I also recall having to iterate to arrive at steady state. When someone asked me about system curves for systems with recycles (pressure drop in recycle lines), I had to do some thinking on how to go about generating one . This was the result. Link to the ...
Pressure drop (and system curves) for diverging branches
Просмотров 5 тыс.2 года назад
Last time I looked at fluid flow and pressure drop in parallel branches that split from a common point and then converge again. But what happens if the destinations of the branches are different so they never meet again? (*sniff sniff*) How do you generate a system curve for diverging branches? 00:00 Converging and diverging branches 01:14 Terminating each branch 04:50 Polynomial fitting & nega...
Pressure drop (and system curves) in parallel
Просмотров 13 тыс.2 года назад
Why do electrical engineers have nice equations for resistors in parallel, and we process engineers don't?! We have a look at why this is the case, and how it doesn't matter because we can use the same principle to analyse fluid flow through parallel branches. 00:00 Analogies between fluid flow & electrical current 02:29 Ohm's law makes things easy 03:48 The equation for resistors in parallel 0...
Boiling off all the alcohol
Просмотров 3,1 тыс.2 года назад
How many times have you heard that you "boil off all the alcohol" when you cook with it? Is it true? 00:00 "Boiling off the alcohol" 01:11 Boiling mixtures vs. pure substances 01:45 Water ethanol VLE 02:50 ABV vs. mol% 03:23 Rayleigh equation 05:38 What is "alcohol-free"? 06:12 So how much do you need to boil off? 06:50 Boiling vodka & drinking it Calculations (maths trigger warning; requires u...
Boiling Water vs. Vodka
Просмотров 2,3 тыс.2 года назад
I've been thinking a lot about the claim that when you cook with alcohol the ethanol boils off. Before starting to tackle that question one needs to understand the difference between boiling a pure substance like ethanol or water versus boiling a mixture of the two. 00:00 Intro 01:03 Boiling pure water 01:44 Boiling vodka 02:30 Bubble points 04:48 T-xy diagrams 07:03 Raoult's l aw & ideal mixtu...
Alcohol by Volume Explained
Просмотров 3,7 тыс.2 года назад
If you buy a beer that is 5% ABV that does NOT mean there are 5 mL of ethanol to ever 95 mL of water. In this video we look at why that is the case and how we convert Alcohol By Volume to a mass and mole fraction. I also think I've spotted some mistakes in Perry's Chemical Engineers' Handbook, if I am to be so bold...! 00:00 I hate volume 00:35 Mixing water and ethanol demo 02:05 Volume fractio...
Increasing pump suction pressure... What happens to the discharge pressure?
Просмотров 43 тыс.2 года назад
Simple pump question... If I have a pump with 1 bar suction pressure, and 2 bar discharge pressure, what is the discharge pressure if I increase the suction pressure by half a bar? 00:00 The centrifugal pump 00:50 The test setup 02:50 Right and wrong ways to start a pump 05:30 Increasing suction pressure 07:55 How to think about pump pressures Process with Pat is the place to come for perspecti...
Does Altitude Affect Pressure Gauge Readings?
Просмотров 3,1 тыс.2 года назад
Pressure gauges measure pressure relative to atmospheric pressure... So what happens when you move a gauge to a different altitude with a different atmospheric pressure? 00:00 Going on holiday 01:22 Mean sea level pressure 02:30 Bourdon gauges 07:52 Vacuum gauges 14:13 Conclusion Process with Pat is the place to come for perspective and to ask stupid questions. I want you to leave more knowledg...
Boiling water with ice
Просмотров 11 тыс.2 года назад
Despite the clickbait title of every video that shows this trick, it's still cool to see, and very useful to understand if you work with steam. 00:00 The experiment 02:38 What is happening in the jar 04:24 What do you call water at 101 °C and 1 atm? 05:54 Trying with a pressure gauge 07:06 Constant volume & density on a p-H diagram Process with Pat is the place to come for perspective and to as...
Vapour Pressure Crash Course
Просмотров 3,1 тыс.2 года назад
To know why things evaporate and why things boil (as well as what the difference is) you need to understand vapour pressure. 00:00 Daily photos of liquids 01:16 Liquids can evaporate below their boiling point 02:37 Measuring vapour pressure 03:58 Antoine equation 04:41 Boiling 06:34 Mixtures Process with Pat is the place to come for perspective and to ask stupid questions. I want you to leave m...
Wet bulb temperature - why & when is it used?
Просмотров 76 тыс.2 года назад
Wet bulb temperature - why & when is it used?
What does a Chem. Eng. degree not prepare you for?
Просмотров 3,1 тыс.2 года назад
What does a Chem. Eng. degree not prepare you for?
Can we use CO₂ in our fridges & AC's?
Просмотров 5 тыс.2 года назад
Can we use CO₂ in our fridges & AC's?
What's the pressure in a CO₂ cartridge?
Просмотров 18 тыс.3 года назад
What's the pressure in a CO₂ cartridge?
How I Approach Understanding Thermodynamics
Просмотров 7 тыс.3 года назад
How I Approach Understanding Thermodynamics
Piping & Instrumentation Diagram from scratch
Просмотров 52 тыс.3 года назад
Piping & Instrumentation Diagram from scratch
Operations vs. Design Work in Chemical Engineering
Просмотров 10 тыс.3 года назад
Operations vs. Design Work in Chemical Engineering
Equal % valves - Part 2 - Why do we use them?
Просмотров 11 тыс.3 года назад
Equal % valves - Part 2 - Why do we use them?
Equal % valves - Part 1 - What is the equation?
Просмотров 16 тыс.3 года назад
Equal % valves - Part 1 - What is the equation?
Bernoulli, beer jugs & draining tanks
Просмотров 7 тыс.3 года назад
Bernoulli, beer jugs & draining tanks
Why is Chem. Eng. difficult & should one do Masters/PhD? | ChemEng Convos #1 | Jamie Cripwell
Просмотров 1,3 тыс.3 года назад
Why is Chem. Eng. difficult & should one do Masters/PhD? | ChemEng Convos #1 | Jamie Cripwell
Stop looking at pressure drop like this
Просмотров 2,9 тыс.3 года назад
Stop looking at pressure drop like this
Liquid line sizing & pumping downhill
Просмотров 8 тыс.3 года назад
Liquid line sizing & pumping downhill
Want to understand pumps? Don't start with pump curves.
Просмотров 24 тыс.3 года назад
Want to understand pumps? Don't start with pump curves.
he has a horn he he
This is the best P&ID video I have ever seen. Many details explained inside I got to understand the first time. Many many thanks for it!❤
just studied wet and dry bulb painfully and have a look on youtube I'm so happy to see someone can explain this so well thanks for saving my day i appreciated!
great video Pat many thans
Okay, great. But what will happen to the shut-off head in case you increase the suction pressure? For example, if there is a pump with a suction pressure of 0.2 bar and a discharge pressure of 9.5 bar, and the shut-off head is 10 bar, what will happen to the pump shut-off head when you increase the suction pressure to 1.5 bar? Will it increase or remain constant?
Okay, great. But what will happen to the shut-off head in case you increase the suction pressure? For example, if there is a pump with a suction pressure of 0.2 bar and a discharge pressure of 9.5 bar, and the shut-off head is 10 bar, what will happen to the pump shut-off head when you increase the suction pressure to 1.5 bar? Will it increase or remain constant?
AC is just a heat transfer system using some substance that can boil inside (absorb heat) just above boiling point of water and condense outside (give up heat). No such thing as cold only less heat. Heat always moves from hot to less hot
"You need a jersey." Playing footy mate? Lol!
You mentioned that water flows from a high pressure location to a low pressure location. A hose connected to a pump that is going down hill would have higher pressure due to head gain at the nozzle compared to at the pump outlet, but the water still flows down hill. Can you explain what's going on in that situation?
Awesome video. Btw where is your accent from?
@5:50 you say the pump would give 0 pressure when there's no load. Can you clarify which pressure you're talking about? I assume you mean 0 (ie. atmospheric) static pressure? There would still be dynamic pressure due to the kinetic energy of the moving water?
Good lecture. Wet bulb temp, as I was taught, can never be greater than the dry bulb. Or at least the dew point can never greater than the ambient temperature.
Very cleary explained....shows good knowledge
Excellent explanation. Thank you!
this is one the best P&I Diagram explanation...i'm a LNG gas plant operator but still needs to study and further review to continue my knowledge of the P&I Diagram sheets.. thanks a lot for the video..sharing and caring..😊👍👍👍
These videos are pure gold
Good vibes learn a lot. Side question what the name of that art piece in the background??
Great video, love your content, all topics that excites me
You have an excellent ability to take difficult topics and create a simple example to explain it.
I think this video is one of the best video so far I have. Thank you for making video
Best part is the thermocouple demonstration ❤️❤️
This is perfect. I have a garden pepper which has a wonderful flavor. Vodka will remove the flavor from the fiber of the plant. Hopefully; This method will remove the vodka, for the most part, and I can add that flavor to my recipes. Plus storage will be easier throughout the year. If all goes well and without any " Murphy''s Rule ", in an ice cube form. Thank you for your video and explanation.
Discovered your channel nearly. Awesome content and quality. Please do more videos.
Amazing! Thanks for very useful information.
Excellent, excellent video! 🤙
Kudos to you, this was the only video that explained it simply enough for me to understand!!!
A super clear video explaining the concepts and application of wet bulb temperature. Much appreciated!
what a video! It's definitely something extremely useful to a beginner. Many thanks for your effort in making such a great video.
What's the duty cycle of a dehumidifier? Usually it's not perfectly efficient, so the temperature goes up a bit while the absolute humidity goes down
So is a swamp cooler essentially moving left along a line of constant enthalpy?
Cool I finally understood this wet bulb nonsense lol
amazing video for an HVAC engineer as well
Great 👍🏻 thanks. Could you please prepare a similar video for air as a fluid and required blower head
Been trying my best to flip the axis on Google Docs, but for the love of God , I can't figure out how to do it. Can you please point me to the right direction.
Hi Pat, in the formula of Cv value, where the number 27,3 comes?
very truly helpful, thanks
Thanks for the American translation - I almost passed out converting Celcius in my head
Hey pat the way you simplify and explain things is just so helpful ...why did you stop making these videos man, we want our passionate process Engineer back man
Thank you for addressing very basic but highly confusing problem. 👏
What is the meaning of the ( reactor) ? Anyone can help, please. is it a component such as valves, or is it a pressure generator?
Great video.. So here is a question. Using variable speed centrifugal pumps for swimming pools. When the pump is above the pool level (suction lift no gravity feed) sometimes pumps loose prime. Will installing smaller diameter pipes increase pressure to the pump head preventing loss of prime. So 50mm pipes to pump head 63mm discharge?
Show me where on earth 10 degrees wet bulb temp is , in your words , "a scorching hot day". Go on . WHERE.
Midwest and Bible Belt, Dallas Texas had Wet-built effect a few days ago.
Great explanation!
They just look big and scary, but they are actually good girls.
Hi i am i bit confuse .. so you have 2 cylinders high pressure and Low pressurecand in middle you have a Pressure regulator .. so when i open the Pressure regulator what will happen if i open the Pressure regulator??? Cna help me what isbthe answer thanks
No such thing as suction pressure, suction causes vacuum
One of the best examples I’ve found so far thanks.
Ye video Hindi me chahiye