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| visits | member for | 2 years, 1 month |
| seen | Apr 27 at 21:53 | |
| stats | profile views | 184 |
Mechanical Engineering Student at Georgia Tech
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Apr 19 |
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What happens to pipe outlet temperature here? Thank you very much. This makes perfect sense |
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Mar 8 |
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Whats the contact area for elastic contact between a cylinder and a plane surface? That's what I was thinking as well; I didn't know if there is an actual formula for it. Thank you |
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Nov 22 |
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Confused about unit of kilowatt hours Thanks for the help. I did not mean to be rude before. Just getting stressed about starting a project last minute. Thanks again! |
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Nov 22 |
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Confused about unit of kilowatt hours I am not getting anywhere on here. I am trying to make a parallel between my homework problems so that I can do the rest of the project. All of my homework problems just say "A ___ kW fuel cell ....". If I could determine how much power my fuel cell provides then I could do the rest of the homework but this is not helping me |
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Nov 21 |
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Confused about unit of kilowatt hours If I need to supply 25 kW-hr per day then I am just going to simplify it and design a 1 kW fuel cell |
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Nov 21 |
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Confused about unit of kilowatt hours Thank you. Since the course I am taking deals with fuel cells and their use and not on electronics then I was told to just simplify the problem which is why I don't include other factors. I was just reading something and it said "A 3 kW fuel cell ... ". So I guess that means it supplies 72 kW-hr of energy. So if I am supplying 24 kW-hr, I was wondering if I could just call it a 1 kW fuel cell |
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Nov 21 |
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Confused about unit of kilowatt hours Thanks anyway, I will try to deal with this in another way to find a solution |
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Nov 21 |
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Confused about unit of kilowatt hours I guess i understand what you're saying, I am just having a hard time trying to apply it to the design of a fuel cell. I am trying to size a fuel cell so that it can run consistently for a day, essentially proving 24 kW-hr so I thought i could just design a 1 kW fuel cell and provide it with enough fuel and air so that it could run for 24 hours |
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Nov 21 |
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Confused about unit of kilowatt hours So is my above solution correct? If the average consumtion of a house per day is 24 kW-hr then should my fuel cell be designed as a 1 kW fuel cell or a 24 kW fuel cell? |
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Nov 21 |
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Confused about unit of kilowatt hours My question was not aiming towards information about a generator. It was more towards a better understanding of a kilowatt hour. |
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Nov 18 |
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How would I work this continuity problem? Thanks. It's a cool project, if I did save it for the last two weeks. I still have to design the vapor compression refrigeration cyce. It's for my Energy Systems design course. Yes the pipes will be pretty long but they will be winding under the ice rink. Maybe not 1" but between 1" and 2". Do you think I should keep the fluid velocities in the larger pipe and the smaller pipes the same? |
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Nov 17 |
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How would I work this continuity problem? I am designing a piping network that goes under an ice rink for a project. So I am not really sure if the fluid velocities should be the same. But I know that the flow rate of each smaller pipe is $\frac{1}{10}$ of the flow rate in the big feed pipe |
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Nov 17 |
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How would I work this continuity problem? A pump will be controlling the fluid flow so there will be a constant flow rate. I am essentially designing an ice rink cooling system and I am trying to design the piping network that will be under the rink. Will the fluid velocities be the same between the smaller pipe and the bigger feed pipe or would that be a design choice? |
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Nov 13 |
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What is the characteristic length of a cylinder does the equation $L_{c}=\frac{A_{s}}{P}$ not hold true? |
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Sep 9 |
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How can I determine density of a gas only given temperature? I assumed that the pressure of the atmosphere where it exits is 0 gauge pressure. I am not using absolute pressure. And yes I do need the pressure at the beginning of the exhaust system.... that't what I am solving for |
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Apr 22 |
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How would I calculate the convection coefficient in transient convection? Thank you anyway. I'll try to figure it out myself |
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Apr 22 |
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Transient radiation--heating a slab I never thought of it that way. Thanks for helping me understand that |
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Apr 21 |
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Transient radiation--heating a slab So here's my problem now. The problem states that "since the heater surrounds the slab, all the heat that leavces the heater is absorbed by the slab". I originally thought that this meant that $\alpha=1$ but now I'm thinking that this just means that the view factor between the heater and the slab is 1. So can I assume that the object is diffuse-grey and says $\alpha=\epsilon$ even though the problem doesnt state that the object is diffuse-grey |
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Apr 21 |
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Transient radiation--heating a slab OK I understand now. But what exactly is the $\epsilon_{12}$ term? I've never seen that before |
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Apr 21 |
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Transient radiation--heating a slab I thought it was only true when the object is diffuse-grey? So would I be able to say that the object is diffuse-grey even though it doesn't state it? *sorry i tried to edit this to make it more understandable |
