Recent content by yujean

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    Is this even possible? (heat exchanger problem)

    Doing just that. Thanks for your help & suggestions, Fred.
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    Is this even possible? (heat exchanger problem)

    1) Yes. I calculated around 1500HP, or 1200 kW, using the values below. 2) I'm hoping to use a plates-in-shell heat exchanger, as described by "Module 2.5" in the provided link. This 900 kW (~1200HP) will be powering a turbine. *** Perhaps I am approaching this problem from the...
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    Is this even possible? (heat exchanger problem)

    I am currently dealing with a problem involving the heat transfer between two gases. Would it be possible to take JP-8 Fuel Exhaust (990C) and heat up water (starting at 140C, 9.8MPa) to produce 900 KW? The flow-rate of the water is 0.9kg/sec. There is an extreme size-restriction on this...
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    Designing a most powerful/efficient vacuum

    perhaps you can try to reduce your 30 lbs ...?
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    Designing a most powerful/efficient vacuum

    fans... energy sources... it's all dead weight... large moving parts require reaction-forces that would pretty much offset ur device... ie: putting a fan on your tiny robot would make the robot itself spin. lol~
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    Designing a most powerful/efficient vacuum

    paul serrano~ I worked with the professor who started this entire wall-climbing craze. Your best bet is to rely as little on energy-consumption as possible. Energy requires heavy batteries & so forth. Just use sticky wheels. "Keep it as simple as possible, but no simpler." - Albert...
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    What steps need to be taken for successful human colonization of Mars?

    RKK Energiya is likely to mine the moon in 2020.
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    What steps need to be taken for successful human colonization of Mars?

    we're more likely to develop a space station on the moon by 2020, than to go to Mars by 2020... The moon is rich with Helium-3, which can be used as a valuable energy source. Google / Wikipedia: Helium-3
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    Are There Part-Time Opportunities in Mechanical Engineering and Research?

    Mechanical engineering deals a lot with structures and/or heat-related things. It's not simply something you can pick up easily... With regards to reserach, there are always new breakthroughs with regards to stresses/strains of materials---one of my professors in college studied how rabbit...
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    The Demise of Mechanical Engineering?

    I work for a military contractor, ... Mechanical Engineering is far far from being phased out. Even if the world is run by computers, you'll still need that manufacturing-aspect of mech e to BUILD those computers. With regards to electronics, mechanical engineers design how parts are used to...