Location of Repository

Water cooling thermal power measurement in a vacuum diffusion pump

By Luís Henrique Cardozo Amorin, Paulo Rogério Catarini da Silva, Jair Scarminio and Alexandre Urbano


Diffusion vacuum pumps are used both in industry and in laboratory science for high vacuum production. For its operation they must be refrigerated, and it is done by circulating water in open circuit. Considering that, vacuum systems stays operating by hours, the water consumption may be avoided if the diffusion vacuum pumps refrigeration were done in closed circuit. However, it is necessary to know the diffusion vacuum pump thermal power (the heat transferred to circulate water by time units) to implement one of these and get in the refrigeration system dimension. In this paper the diffusion vacuum pump thermal power was obtained by measuring water flow and temperature variation and was calculated through the heat quantity variation equation time function. The thermal power value was 935,6 W, that is 397 W smaller and 35 W bigger than, respectively, the maximum and minimum diffusion pump thermal power suggested by its operation manual. This procedure have been shown useful to precisely determine the diffusion pump thermal power or of any other system that needs to be refrigerated in water closed circuit

Topics: Diffusion Pump, Closed circuit refrigeration, Vacuum system, Science (General), Q1-390, Science, Q, DOAJ:Science (General), DOAJ:Science General, Technology (General), T1-995
Publisher: Universidade Estadual de Londrina
Year: 2012
OAI identifier: oai:doaj.org/article:29dbe7b784bf4f3b89dfff969cd70087
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • https://doaj.org/toc/1679-0375 (external link)
  • https://doaj.org/toc/1676-5451 (external link)
  • http://www.uel.br/revistas/uel... (external link)
  • https://doaj.org/article/29dbe... (external link)
  • Suggested articles

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.