Hi All I have an insulated composite wall. I know all of the thicknesses, K values and the inner wall temperature T1. How do I determine the outer wall temperature, T2, if I don't know the heat transfer rate Q? Thanks in advance for all of your help.

"Scientists discover the world that exists; engineers create the world that never was." _ Theodore Von Karman

Hello all, i hope you're having a nice day. I have a question about analytical heat transfer coefficient (HTC) calculation/determination for a rectangular duct curved in a circle. I have found some literature on this topic and also found empirical equations for rectangular cross section straight wa

What is the approaches that Stefan Boltzmann determined the constant sigma=5.6703×10-⁸(Wm-²k-⁴)? theoretical or experimental and how ?

The following derivation for the residual Enthalpy equation was provided to me by my Thermo professor. This derivation will be evaluated in our final exam. What I don’t understand is how step 8 is achieved. The professor explained this step on the board which is the scribbles you can see to the left

"Knowledge isn't free. You have to pay attention."

I would like to use electric immersion elements like the ones used in residential hot water heaters to maintain the temperature of water at 100° C in a stainless steel container (photo attached). The base of the container is 72 by 40 cm, and the depth of the water would be approximately 14 cm, givin

"Power is the by-product of understanding." - Jacob Bronowski

"Certainty ends inquiry." - Jacob Bronowski

"Societies that empower women are less violent in every way."

Please, visit my website  https://www.granovskiy.com/ to know: 1). How to generate power from natural gas (methane) without greenhouse gas emissions; 2). How to generate power from low-temperature waste heat in a new way; 3). How to produce heat at a temperature higher than the temperature of

"Science replaces private prejudice with public, verifiable evidence."

I have a salt-water aquarium built into a dividing wall. it houses a 180-gallon display tank over another 180-gallon tank that houses the filtration. Each tank is 6'l x 2't x 2'w. and there is cabinetry on either side of the tanks. I have an exhaust fan at top of the cabinet that draws in air from t

“Energy is eternal delight” - William Blake

Hi, I'm new in this forum . I have a simple but tricky question. If the the Carnot cycle has the major efficiency rather than every other cycle and it's efficiency is lower than 1 .... that means that the rate of temperature (Temperature in Kelvin scale) is bigger than 1..... but in order to respe

"Learning never exhausts the mind." - Lionardo Da Vinci

"Has there ever been a society which has died of dissent? Several have died of conformity in our lifetime." - Jacob Bronowski

"Knowledge is an unending adventure at the edge of uncertainty." - Jacob Bronowski

"Reading is a technology for perspective-taking. When someone else's thoughts are in your head, you are observing the world from that person's vantage point." - Steven Pinker

Hello, I am a high school student who produces theoretical projects and presents them to 3rd party organizations. Recently I have been thinking about the inefficiency of “Steam Turbines”. As a solution to this, I thought that I could suggest using a different liquid instead of water, which is used i

"The Second Law of Thermodynamics defines the ultimate purpose of life, mind, and human striving: to deploy energy and information to fight back the tide of entropy and carve out refuges of beneficial order. An underappreciation of the inherent tendency toward disorder, and a failure to appreciate t

"The field of science is large; it is, therefore, impossible for any individual to cultivate the whole." - John Dalton

"None of my inventions came by accident. I see a worthwhile need to be met and I make trial after trial until it comes. What it boils down to is one percent inspiration and ninety-nine percent perspiration." - Thomas Edison

I recently wrote a book on thermodynamcics titled “Weber’s Thermodynamics Notes”. The book uses a different approach to explain thermodynamics for a beginner in the subject matter. The book is on Amazon but can be viewed for FREE on www.wrenchtime.com (click Thermodynamics). I would appreciate any

Hey guys, I'm looking the way to determine time of drying (using heat) for something that doesn't absorp water for example rocks, plastics, … after they got out of water? I have looked around and not a single clue or document that could help me

"Nations in their great ages have not been great in art or science, but in art and science." - Jacob Bronowski

"A man becomes creative, whether he is an artist or scientist, when he finds a new unity in the variety of nature. He does so by finding a likeness between things which were not thought alike before." - Jacob Bronowski

“There are worse things than being alone but it often takes decades to realize this and most often when you do it's too late and there's nothing worse than too late” ― Charles Bukowski

"We will never have a perfect world, but it's not romantic or naive to work toward a better one." - Steven Pinker