5. Energy aspects of vacuum bagging
In a positive-displacement vacuum pump (compression by volume reduction), a thermodynamic cycle is described, and compression can only be achieved by expending mechanical energy.
Putting things at their best and assuming that compression is isothermal, the power P required to compress, from suction pressure p a to discharge pressure p r a gas flow of volume flow S is given by the formula :
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Energy aspects of vacuum bagging
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