She's explaining everything like she is explaining to a kindergartner, as an engineering student it is much helpful.
@brian_mcnulty
6 жыл бұрын
This is such a great playlist. I was writing a letter to my father and asked him why an air conditioner works because he has been an HVAC guy for most of his life. From his prison cell of almost 10 years, he was able to draw me a very similar diagram. Given that I am somewhere in between my 2nd and 3rd year of aerospace engineering, I was astonished at his ability to explain such a concept with just a pen and paper where most of my instructors had not fully succeeded. I thought I'd share that story because it hits home pretty well. Thanks for this. I have much to share with him upon his liberation.
@shyamtripathi6817
4 жыл бұрын
Why he was imprisoned.
@danielmillner4501
6 жыл бұрын
She is the perfect host for this. This is the series that keeps be coming back!
@Kid_illithid
6 жыл бұрын
I lost track of the lessons because I kept looking at that cool shelf in the background. I'm gonna build one of those
@vadimflaks7795
6 жыл бұрын
As far as social impact goes, electric refrigeration is probably one of the top 5 engineering solutions of all time, right there with the wheel, iron smelting, movable type, radio, and computerized automation. No way the world population is where it is today if the food to feed all these people spoils at its natural rate.
@isaiahphillip4112
4 жыл бұрын
The transistor feels left out from this list.
@herbertbarrirt8409
6 жыл бұрын
at this point its essentially Crash Course Thermodynamics :P
@dan1204hc
6 жыл бұрын
I was about to comment that. This is not only Engineering. Thermo applies for Sciences as well, and not for Computer Engineering, not much for Electrical or Civil. I mean, I am a ChemE and thermo is deep within us and the Mechanical guys. I don't get why they are focusing on it. Maybe they should make it more clear what lines are being studied and why. I think they are just taking the most applied courses of engineering and they will go around.. Thermo, Fluid Mech, Heat transfer, electrical systems, Static mechanics etc.
@ajaxhopper9859
6 жыл бұрын
Herbert Barrirt Dan Victor Be patient. This is only episode 11 in a 46-episode series that needs to cover several, unrelated facets of engineering. It makes sense that they would spend a few episodes focusing on a specific discipline before moving on to the next one.
@mikey10006
6 жыл бұрын
All engineering is basically thermodynamics and incorporates a lot of it since there aren't many systems where energy is not involved
@eruyommo
6 жыл бұрын
Dan Victor. I disagree. I'm a civil engineer and I use a lot of thermodynamics. Maybe not as much as other areas, but it's still a lot, specially in Hydraulics (Dams, pipes and others) and Environmental.
@duaneduvall7901
Жыл бұрын
Great videos. I'm just getting started "Eng 101" with the terms and theories of Engineering so this is much appreciated.
@vatsalparmar317
6 жыл бұрын
She did miss out a bit i think on the properties of the refrigerant and other gases . As being a mechanical engineer we are aware of these things . Its basically about pressure and temperature . Everybody knows water boils at 100 Degrees but not everyone is aware that boiling point of liquid changes with the change in pressure . If pressure increases boiling point increases and if the pressure decreases the boiling point decreases . For example at an altitude of 20000 feet water boils at near 40 or 44 degrees celsius because the pressure is less at that altitude . The same happens in a refrigerator . When the compressor compresses the gaseous refrigerant its pressure increases so does its boiling and condensation temperature . And the heat because of compression of the gas is rejected to the atmosphere in the condenser and the refrigerant condenses . The expansion valve then reduces the pressure of that liquid refrigerant thus reducing its boiling point and temperature . this low temperature refrigerant is the passed on to the evaporator to absorb the heat and cool the surroundings .
@seven9596
5 жыл бұрын
come on! make this simpler! MY MIND IS ABOUT TO BURST.
@DEADN8
8 ай бұрын
The intro to these are so cool!
@kelpy_w_
6 жыл бұрын
I lose proper understanding about 3 minutes in most times 😂 but it's still pretty interesting to watch.
@blueckaym
4 жыл бұрын
Yeah, I got the same impression - she got some well memorized stuff to say, but not much effort to actually explain anything.
@SuperShoe7
6 жыл бұрын
My two loves: dr. Shini and thermodynamics
@hardikderashri2304
5 жыл бұрын
Thank you so much , you saved me in my school and now in college
@MINIAWARFR
4 жыл бұрын
Wow, finally understood how it worked. Thanks :)
@NotHPotter
6 жыл бұрын
Glad to know when I get stuck doing the same thing I'm just playing my part in a powerful cycle.
@Bibibosh
6 жыл бұрын
i cant wait for the next episode ... fluid momentum! like shockwaves thru substances. Vacuums and compression!
@samuelcarvalho3691
4 жыл бұрын
The best explanation of a heat pump, i finally understood every bit of how it works
@EmphaticStorm
3 ай бұрын
Thank you for making me smarter.
@tvcomputer1321
6 жыл бұрын
seemed to gloss over the bit about the expansion valve
@BlueyMcPhluey
6 жыл бұрын
yeah, I mean I know this isn't intended as a refrigeration course but it would be interesting to understand more
@vatsalparmar317
6 жыл бұрын
She did miss out a bit i think on the properties of the refrigerant and other gases . As being a mechanical engineer we are aware of these things . Its basically about pressure and temperature . Everybody knows water boils at 100 Degrees but not everyone is aware that boiling point of liquid changes with the change in pressure . If pressure increases boiling point increases and if the pressure decreases the boiling point decreases . For example at an altitude of 20000 feet water boils at near 40 or 44 degrees celsius because the pressure is less at that altitude . The same happens in a refrigerator . When the compressor compresses the gaseous refrigerant its pressure increases so does its boiling and condensation temperature . And the heat because of compression of the gas is rejected to the atmosphere in the condenser and the refrigerant condenses . The expansion valve then reduces the pressure of that liquid refrigerant thus reducing its boiling point and temperature . this low temperature refrigerant is the passed on to the evaporator to absorb the heat and cool the surroundings .
@jimbeam8772
6 жыл бұрын
I love crash course, but can't get past this presenters voice to enjoy the information.
@abhaysharma966
6 жыл бұрын
That would have also great to learn all that from our favorite power hank but she is also doing good and her accent is really very impressive like the way benedict cumberbatch speaks.
@Egofever
6 жыл бұрын
"Freon" is to "refrigerant" as "Kleenex" is to "tissue". The brand name became synonymous.
@zombieblood1675
6 жыл бұрын
Thanks I've always wanted to know how a fridge works. I found it pretty wierd that you can all energy to something to make it colder.
@FreeOfFantasy
6 жыл бұрын
even weirder/ more counter-intuitive are the gas fired camping fridges. You burn gas to make something cold.
@yondaime500
6 жыл бұрын
You can do this even more directly using the Peltier effect. Also, when you think about it, a computer sorting a list is also using energy to reduce the entropy in its memory. There's a direct relationship between information entropy and thermodynamic entropy, which is kind of weird but makes perfect sense at the same time.
@zombieblood1675
6 жыл бұрын
yondaime500 you're right I never even thought about the computer one
@Arasseo
6 жыл бұрын
Good to keep in mind though, that since entropy can never decrease in the universe, you're adding energy BUT also producing a lot MORE heat than you're taking away; thus still increasing entropy. Same as the computer example.
@zombieblood1675
6 жыл бұрын
Felix Guo you can decrease entropy in an area by increasing the entropy of the things around it. Ie a fridge cools water into ice but vents out a lot of heat.
@Vanillzz
5 жыл бұрын
"Lets learn and then repeat" lmao at least I got that down in uni
@emmanuelkalunga7916
Жыл бұрын
Madam thank you so much, you really a good teacher
@dustinbodie5675
5 жыл бұрын
dude there was a pickle rick in that pot lol
@mikey10006
6 жыл бұрын
I love this series and you Ms Somara :D
@SotraEngine4
6 жыл бұрын
I really need this for my semester
@vikaskadel858
5 жыл бұрын
Very pretty........... The theory
@yang2382
5 жыл бұрын
I finally understand "the phase change "
@gappythegoat5397
4 жыл бұрын
this has helped me soooooo much Thx This is well explained ThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThxThx
@JohnVance
6 жыл бұрын
Nice IK cameo!
@nadakadry7940
Жыл бұрын
amazing
@Ninjagirl4225
4 жыл бұрын
you simplified then my physics professor couldn't in 30 minutes
@shadebug
6 жыл бұрын
Engineers really care about getting the most efficient work out possible
@mohamedmagdy-xu2yu
6 жыл бұрын
God I love that series
@colbyfitzsimmons767
6 жыл бұрын
I know that this is a little bit off from engineering but who here would like a crash course criminology
@Conceptual_Space
Жыл бұрын
i mastered the repetition of this video
@johnnybadboy3475
6 жыл бұрын
Try to find annoying orange, he’s in there somewhere :3 Also pickle rick
@dan1204hc
5 жыл бұрын
You can work and research heat engines, refrigerators and cycles following the career of Mechanical Engineering.
@franchisnsaikia7618
6 жыл бұрын
She lives in a gravity free space..... See her background
@miriam7872
6 жыл бұрын
Can someone answer me a quick little fluid dynamics question? I have an exam question here that's simply: How can you increase the maximum flow of a Laval nozzle with fixed geometry? And I'm really confused. Is the answer simply that you can't? I'm unsure and my script doesn't exactly help me.
@marzuqahmed218
4 жыл бұрын
Thanks
@fosiyaahmed915
6 жыл бұрын
i am tell one advice that make you life better !
@AaronFresh09
6 жыл бұрын
Great host although it seems like your voice is straining to talk for such long periods. Consider vocal excercises to improve your range. You'll find it improveds speeech
@xstephanx94
6 жыл бұрын
DEAR JESUS SHE IS GORGEOUS....
@juancamilo4684
6 жыл бұрын
RIGHT? cant keep up.
@blazedones
6 жыл бұрын
Tunnel Vision We're allowed to still have crushes on our teachers :)
@MsPurpleAfro
6 жыл бұрын
THANK YOU. We skipped refrigeration in school.
@stax6092
6 жыл бұрын
Cool Story Bro.
@pedrocarvalho6587
4 жыл бұрын
why does the fluid need to be repressurized in the heat engine?
@Sgt-Gravy
6 жыл бұрын
I wished I would have seen the sterling engine on this episode...
@TheTruthSeeker756
6 жыл бұрын
She goes about 100 miles an hour. I think 80 miles an hour would be more understandable
@kookiepatooti
6 жыл бұрын
RICK is inside the POT.
@seven9596
5 жыл бұрын
HELP ME! I DONT GET IT :(
@jeanatienza1247
5 жыл бұрын
I'm having hard time understanding the concept of heat engines and how refrigerators work in a detailed-manner. Damn, I guess I'll read and explore more on other resources. I'm taking engineering in the next two months, hopefully I can finish this series before my college starts. I wanna be prepared.
@safir2241
6 жыл бұрын
Cool!
@geraltofrivia9167
6 жыл бұрын
Safir
@safir2241
6 жыл бұрын
hanif raka Greetings
@pablocallizob
4 жыл бұрын
Annoying Orange at 8:01 😂
@talideon
6 жыл бұрын
Hah! Bananas in Pyjamas!
@HasanAlKharfan
6 жыл бұрын
Aren't freons banned ? To my knowledge they are banned in the EU but is it just the EU or is this video simplified?
@jameslinton3811
6 жыл бұрын
hasan kharfan I think the EPA said by 2022 any non HFC'S will be banned in the states.
@mesutnemo9430
5 ай бұрын
expansion valve not expansion value
@gappythegoat5397
4 жыл бұрын
Don't listen to haterz
@aethos19d81
6 жыл бұрын
It's just not that there is any kind 6th that I empathize
@CCRob720
6 жыл бұрын
? if another Big Bang occurred. Would our universe get scattered and a new space would occupy our place in that 2nd Big Bang universe?
@partialintegral
6 жыл бұрын
Freon? I thought it had been banned.
@jameslinton3811
6 жыл бұрын
partialintegral it has. The EPA is phasing out the use of anything with chlorine in it.
@eruyommo
6 жыл бұрын
But its name has sticked as slang for any fluid used for refrigeration.
@dziban303
6 жыл бұрын
James Linton Don't be surprised if the current clowns throw away those regulations too.
@mohamedmagdy-xu2yu
6 жыл бұрын
Not the ones that are not reacting with oxgen like R134
@LA-MJ
6 жыл бұрын
My fridge runs on cyclopentane. No more CFCs, tyvm
@gregorymalchuk272
6 жыл бұрын
Are you in Europe?
@LA-MJ
5 жыл бұрын
@@gregorymalchuk272 yes
@canyadigit6274
6 жыл бұрын
It’s my birthday! I’m turning 13!
@alexiswelsh5821
6 жыл бұрын
Happy Birthday!
@canyadigit6274
6 жыл бұрын
Thanks!
@hannahsharp3641
6 жыл бұрын
Happy birthday
@canyadigit6274
6 жыл бұрын
Hannah Sharp Thanks, but it’s not my birthday anymore 😂
@vishnumadhavitakkella8186
6 жыл бұрын
Happy birthday! Okay Belated happy birthday:)
@WiseWik
6 жыл бұрын
Shini
@ameymorshed4744
6 жыл бұрын
Did anybody see the annoying orange in the fridge?
@mansourhassanosman272
6 жыл бұрын
Yesterday. It was avocado day
@keithsanks7232
6 жыл бұрын
I'm Pickle Rick!
@robertmcgann5881
6 жыл бұрын
Is it me or is the refrigerator cycle having an expansion VALUE?
@arneshsharma5247
6 жыл бұрын
Second
@geraltofrivia9167
6 жыл бұрын
Super Savage Sports
@SunriseFireberry
6 жыл бұрын
first
@mikeelliott1971
6 жыл бұрын
It's great that you point out that solar panels and wind turbines are a great alternative but why don't you point out the amount of energy and resources required to build these items and the hazardous-waste left over after producing them
@tonyperkismd
6 жыл бұрын
because the topic is thermodynamic cycles involving heat and work within a device. solar is a great alternative to get a relatively unending source of electrical energy to produce work. comparing the pros and cons of the industrial manufacturing processes to produce the devices that employ these cycles is another conversation. refrigerators also require tons of energy and resources to produce and those processes also leave hazard waste behind. mining for metals, producing viable refrigerants in chemical plants, manufacturing the plastic linings from petroleum etc. etc. If it helps or matters at all I am a licensed PE in mechanical engineering working for an industrial consulting firm with a focus on these cycles.
@superdau
6 жыл бұрын
Because that's not the point of the video and the argument is stupid anyway. All energy generation methods need energy and materials to build them in the first place. *Or do you think the steel and concrete for building a gas/coal/nuclear power plant just fall from the sky and their fuel magically appears on their doorstep?* The hazardous waste (green house gases, nuclear waste, emissions in general) left over from those types of power plants not only in construction but even more importantly while in operation is far worse. Solar panels and wind turbines typically repay their manufacturing energy in 2 or 3 years, but can even go as low as less than a year depending on technology and location. After that they produce for "free".
@DennisDavisEdu
6 жыл бұрын
I thought the solar panels and wind turbines reference was awkward and out-of-place in a heat cycle presentation.
@xxxxxx-xc6qh
6 жыл бұрын
building better refrigerators? what about planned obsolence?!
@arneshsharma5247
6 жыл бұрын
View
@LePedant
6 жыл бұрын
So posh!
@lauraomar6786
6 жыл бұрын
she's so beautiful
@tommythetoe
6 жыл бұрын
I am very sorry but that was the worst explanation for refrigeration I have ever heard. I now understand why I have to teach refrigeration basics to the cadets who come out of school. Sorry again I know you mean well and I love your site. For those who were confused Pretend you put a pot of water on the stove turned the flame on high and went out for a beer. Water boils at 100 C the water will heat up to 100 C and stay there. Not getting any hotter, the pot will stay near that temp and be fine , until the water boils away. After the water is gone the pot melts and your wife is pissed. The water was keeping the pot cool I know 100 C seems hot but its way colder then fire. It takes energy to make something boil or even evaporate. Thats why your hand feels cool when you poor rubbing alcohol on it and blow. We make freon it boils at what ever temp we want say at a nice 5 C to keep that beer cold. Second water does not always boil at 100 C think of a pressure cooker higher pressure means that it boils at over 100 C or a persons blood boiling in outer space It boils there because the pressure was 0 so low that it boils at your body temp. ( I know not exactly correct but easy to picture) Third steam turns back into water at 100 C same temp. same temp I know sounds wrong but its true. So you have 2 radiators 1 inside 1 out. A compressor that is sucking on the radiator inside and pushing into the radiator outside. Just before the radiator inside your home there is a blank with a tiny hole in it so only a small bit of freon can get through. There is a fan on both radiators. You turn of the compressor the press in the inside radiator goes down while the outside radiator press goes up. Remember there is that blank only letting a small amount of freon to flow. the pressure outside goes up while the fan on the radiator keeps it at outside temp. ( compressing any gas makes it hot. More you compress it the more the temp goes up) Remember boiling temp goes up when pressure goes up and the boiling temp is also the temp it condences at. the pressure goes up enough with the temp staying the same that it turns back into a liquid. It puts out a lot of heat when this happens. That liquid freon now flows to your inside radiator ( through the small hole in the blank that maintains the pressure difference) where it now boils at a nice 10 C . The fan inside blows air over the radiator keeping it warm enough to boil the freon and cooling your home. The compressor now starts it all over again. A cycle. sounds complicated but really easy when you go over it a few times. Sorry for the super long post. Again I love your site just hate this vid. Tom
@VivienneCS-ir2jg
5 жыл бұрын
Thank you for taking the time to explain, I can't listen to the person in this video. Last month I repaired my totally frosted freezer by adding a 16" long copper wire wrapped around the heating defrost coil. So far the freezer hasn't frosted up again.
@devilsadvocate2251
6 жыл бұрын
Justin y
@PatrickAllenNL
6 жыл бұрын
Cycles like minecraft
@bt4670
6 жыл бұрын
what
@VashdaCrash
6 жыл бұрын
Mariux - You can make a system that works in cyles to make materials in minecraft
@bt4670
6 жыл бұрын
oh ok
@snek4004
6 жыл бұрын
I'm just a child
@snek4004
6 жыл бұрын
Is this don't crush child's head
@britishentertainment7610
5 жыл бұрын
She is so hot
@fosiyaahmed915
6 жыл бұрын
research the muslim religion
@rayceeya8659
6 жыл бұрын
Perkins, Perkins, Perkins, why does that name sound familiar? Oh yeah they made engines in the 30s. Sorry different Perkins
@Rama_Guru
6 жыл бұрын
Smart and sexy... Wow. It's a bit t9 fast for the average person
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