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Ripcrow's latest activity
R
Ripcrow
replied to the thread
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Calculating vacuum -- These numbers do not make sense
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Fixed I think. Bought a gauge that went as low as -100 kpa and it went well past that and hard up against the stopper at around where...
May 25, 2024
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Ripcrow
replied to the thread
Gravity Based Electricity Generator
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A hard surface means less energy is required by the animal. I’m not sure of the amount of depression ( how much higher the animals would...
May 20, 2024
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Ripcrow
replied to the thread
Gravity Based Electricity Generator
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Gearing changes how power is delivered but it doesn’t change the amount of total energy that can be extracted from the system.
May 20, 2024
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Ripcrow
replied to the thread
Gravity Based Electricity Generator
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And that’s fine except when the projections are biased
May 18, 2024
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Ripcrow
replied to the thread
Gravity Based Electricity Generator
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So that inventiveness should be encouraged and instead of self projected limitations questions should be asked.
May 18, 2024
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Ripcrow
replied to the thread
Gravity Based Electricity Generator
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The op specified 10 -100 kw. We don’t know long it can fall as we don’t know the height. Yes we are limited by physics but we are not...
May 18, 2024
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Ripcrow
replied to the thread
Limiting factor in design of small gas turbine w/ LOW self sustain speed
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Small turbines are plagued by issues caused by boundary layers. As they are caused by surface area small diameters have a larger...
May 17, 2024
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Ripcrow
replied to the thread
Gravity Based Electricity Generator
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Typical of this forum. Everyone projects their own limits onto others thoughts. Your idea is good and can be worked. You’ll need an...
May 17, 2024
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Ripcrow
replied to the thread
Clarify power calculation
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Yes the units are the same. Thanks for clarifying my question
May 16, 2024
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Ripcrow
replied to the thread
Clarify power calculation
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Joules and watts are per second and are equal to 1 Newton metre. This is my original question as the units confused me. Maximum torque...
May 15, 2024
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Ripcrow
replied to the thread
Clarify power calculation
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Watts are watts per second also so they are the same. The pelton turbine is an impulse turbine and uses different properties of flow...
May 15, 2024
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Ripcrow
replied to the thread
Clarify power calculation
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Watts is equal to Newton and as the mass flow rate and velocity is calculated as per second that final answer of 163 watts ( newtons )...
May 15, 2024
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Ripcrow
replied to the thread
Clarify power calculation
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Yes that half mass times velocity squared is half of the flow rate of 0.00129kg per second ( so that is 0.000645 kg per second )...
May 14, 2024
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Ripcrow
replied to the thread
Clarify power calculation
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Pressure drop is from 7333 pascal to 867 pascal with a fluid density of 0.051 kg per cubic metre passing through a tube ( no restriction...
May 14, 2024
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Ripcrow
replied to the thread
B
Calculating vacuum -- These numbers do not make sense
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There are lots of manometers that are sealed both sides.
May 14, 2024
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