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To extract energy, you have to have an energy gradient - a even lower ground state for the system to go to.   Granted, space has a non-zero energy state. But where do you find an even lower energy state so you can extract the difference?

Think of it this way.   Steam engine works not because it has energy, but because it higher energy than its environment, and can can release its own energy into the environement.   The reason it can drive a ship or a train is the energy can be captured in the process of being release to the lower energy environement. If you immerse the steam engine in a bath of steam at the same temperature and pressure as the steam inside the steam engine, the steam engine comes to a stop because there is nowhere for the steam to release its energy to.

The vacuum energy engine is immersed in vacuum energy.   Energy state everywhere inside and outside the engine is essentially the same.   It is like a steam engine immersed in a bath of high pressure steam. There is no energy gradient to exploit.   How it is going to extract any energy?

Seems to me like this was born out of a sic fi writer's ignorance of thermal dynamics.

<blockquote data-quote="chuck4" data-source="post: 166180" data-attributes="member: 6502">To extract energy, you have to have an energy gradient - a even lower ground state for the system to go to.&nbsp;&nbsp; Granted, space has a non-zero energy state.&nbsp; But where do you find an even lower energy state so you can extract the difference?Think of it this way.&nbsp;&nbsp; Steam engine works not because it has energy, but because it higher energy than its environment, and can can release its own energy into the environement.&nbsp;&nbsp; The reason it can drive a ship or a train is the energy can be captured in the process of being release to the lower energy environement.&nbsp; &nbsp; If you immerse the steam engine in a bath of steam at the same temperature and pressure as the steam inside the steam engine, the steam engine comes to a stop because there is nowhere for the steam to release its energy to.The vacuum energy engine is immersed in vacuum energy.&nbsp;&nbsp; Energy state everywhere inside and outside the engine is essentially the same.&nbsp;&nbsp; It is like a steam engine immersed in a bath of high pressure steam.&nbsp; &nbsp; There is no energy gradient to exploit.&nbsp;&nbsp; How it is going to extract any energy?Seems to me like this was born out of a sic fi writer's ignorance of thermal dynamics.</blockquote>

[QUOTE="chuck4, post: 166180, member: 6502"] To extract energy, you have to have an energy gradient - a even lower ground state for the system to go to. Granted, space has a non-zero energy state. But where do you find an even lower energy state so you can extract the difference? Think of it this way. Steam engine works not because it has energy, but because it [i]higher [/i]energy than its environment, and can can release its own energy into the environement. The reason it can drive a ship or a train is the energy can be captured in the process of being release to the lower energy environement. If you immerse the steam engine in a bath of steam at the same temperature and pressure as the steam inside the steam engine, the steam engine comes to a stop because there is nowhere for the steam to release its energy to. The vacuum energy engine is immersed in vacuum energy. Energy state everywhere inside and outside the engine is essentially the same. It is like a steam engine immersed in a bath of high pressure steam. There is no energy gradient to exploit. How it is going to extract any energy? Seems to me like this was born out of a sic fi writer's ignorance of thermal dynamics. [/QUOTE]

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