The paper shows non-efficient application of the existing economical models for determination of replacement time for transformers with long service life because these models do not take into account real changes in transformer parameters during its operational period. An improved mathematical model for estimation of replacement efficiency of power transformers which are used at ...

The paper concerns the current key energy problem – the energy saving potential of textile industry and the rational and efficient use of energy resource. The key method is based on the conception of intensive energy conservation. As a result, the way of primary energy consumption reduction in Belarus is provided. The possibility of usage of waste energy flows of medium-and ...