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• Utilization of grinding dross remained from production process in order to minimize waste and save costs

  18-25

  Emese Gulyás

  Norbert Boros

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  114

  It is i mportant to reuse wastes from production process particulary. In the course of metal roughing grinding dross comes off. Its oil content is high enough to treat i t wi th piston briquette machinery and by this methode  part of this oil can be retrievable and returned to production. By means of making a ma terial balance I determined how much effective the machinery has to be to work the dross and its payback was also calculated.

• Napenergia használata villamosáram termelésre egy családi házon vizsgálva

  1-12

  Ágota Kovács

  Tünde Jenei

  Views:

  146

  In this paper we compare the naturalgas and solarenergy utilizatio nwith the help of SWOT analisys. Than we are presenting the solarpower utilization devices and system installation in economic point of view. And two payback calculation method is demonstrated on a family house.