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Pulp and paper industry is a highly energy intensive and the drying section of the paper machine consumes 64 % of total energy. The heat of the humid hot air resulting from the drying process has a usable energy potential which has to be recovered and represents a secondary energy resource. This paper analyses efficiency of introducing a complex heat recovery, in three stages, integrated into the...
Today, the waste represents one of the most serious issues of the environment protection. Annually big amount of waste is generated. Economic operators can exploit various types of waste, which may be treated, recycled or can be routed to a treatment plant (for reducing degree of nuisance) or to an incinerator (for reducing the volume). Unused waste is, as a general rule, stored. In this case study,...
This paper proposes an application of the current using its advantages in harmonic signals generation. Using current-conveyors in harmonic oscillators building, the frequency band of active device is well valorised, comparing with the situation of operational amplifiers using. The author chooses from all RC oscillators the oscillator with Wien network, as one of the most used net for RC oscillators...
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