Issue 2/1993

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Radlant heatlng by ffght infra-red gas heatlers Is fltted above a/I for productlon shops but ft can be app/led ln other bulldings too. Such heatlng system desIgn has fts own spec/ficlty whlch has to be respected ln the Interests of the correct functlon of the equlpment

The artlcle is based on the author's controversy concernlng design of the PS Pferov admlnlstratlve buildlng reconstructlon ln the year 199- and on the translatlon of the artlcle ln HLK 6/92 publlshed by the Carrler-Transex Compa­ny whlch supports and completes the reasoning.

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Changes in the world power system in the sphere of electrical energy productlon are presented there. Utilization of the piston-lype internal combustion engines for gaseous fuels, products of the tKD Hradec Králové, in the power sources for para/lel power and heat production is described there. Economical and ecological data demonstration the advantage of the presented solution oare discussed too.

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Economy of an equlpment for heat recoveryJ especlal/y of an alr handllng equlpmentJ Is dlscussed ln the paper there. The author based the paper on the prevlous/y used M. D. of Fuel and Power dlrective with omission of some asked surcharges. The solution is entire/y universal and it allows calculations even with changes of Interests and dlfferent maturities of an Investment 1-anJ too. Four practical contingencies of the solutlon are presented there.

Properties of asynchronous motor s which have to be contemplated in connection with motor drives design of fans are dlscussed ln the paper. The brief summary of possibllities of asynchronous motors speed control is presented in the second part of the paper together with the maln propertles of the control.

The paper deals with an economlc analysls ofthe investment costs forwarming up a one family house where bufldlng modifications concerning warming up were proposed step by step with the single modiflcatlons evaluation from the energetical and economlcal pouints of view.

The author presents the course of the obtalnment of the authorlzatlon ln the metrology branch. She refers the trade law 455/1991 Sb. which has to be amended ln the nearest future. The paper Is valld generally and the amendment wouldn't affect the presented course. Contingent modilflcations after amendment of the law wlll be published by the author.

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