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Abstract: Based on the principle of pump structure, adopting the
method of dividing controlled volume on the pump skeleton diagram, It is
established the differential equation of the actuating medium’s
temperature for each controlled volume in the pumps of type CY and SPB
in compliance with the law of energy conservation of controlled volume,
and it is obtained the rule of temperature variation with time by
finding the solution and finally makes analysis and comparison of the
self-cooling performance for the pump of type CY and SPB
Key words: Controlled
volume Energy conservation
CY pump SPB pump Self-cooling
CLC No: TH322
Received 20010604, received in revised form 20020209
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