Energiagazdalkodasi Intezet

Budapesti Muszaki Egyetem

Godolloi Agrartudomanyi Egyetem

Imre Szabo

Laszlo Szucs

Andras Horvath

Emod Sigmond

Gyorgy Danko

Zsolt I Vitez

Gyorgy Kulin

Peter Szendro

Janos Benko

Verona Toth

A method for the determination of the heat transfer coefficient on a heat transferring surface, including the steps of arranging a layer for measuring the surface temperature and heat flux on the heat transferring surface so that the layer can change the original temperature and heat flux to a negligible extent only, providing for the slight and properly slow changeability of the surface heat flux density within a cycle time which is by several orders of magnitude longer than the time constants of the heat flux measuring layer and of the heat transferring boundary layer, by using a supplementary heating element and performing a practically unlimited number of measuring cycles, using the steps of deflecting the surface heat flux density and temperature relative to the condition in which no measurement takes place. The time-functions of the changes of the surface temperature .DELTA.T and of the surface heat flux density .DELTA.q are determined, and the heat transfer coefficient is defined as the approximate limit value H of the quotients .DELTA.q/.DELTA.T corresponding to the zero surface heat flux density or temperature deflection.

Method and apparatus for the determination of the heat transfer

The invention is, on the one hand, a method for drying products, especially corn or articles, in the course of which the products to be dried are traversed by a drying gas, the moisture content of the drying gas is diminished by contacting it with a desiccant liquid, and the desiccant liquid is at least partly regenerated after the contact. According to the invention, the drying gas stream flows through at least two layers of products to be dried successively, and before or after flowing through each layer of products it is brought into contact with the desiccant liquid. The invention is, on the other hand, an apparatus for drying products, especially corn or articles, which apparatus comprises structure for holding the products to be dried, a device for letting a drying gas flow through the holding structure, a gas processing device for contacting the gas flowing through the holding structure with a desiccant liquid, and structure for regenerating the desiccant liquid, where the apparatus for holding the products to be dried have at least two drying sections which are placed one after the other in the direction of movement of the drying gas stream, and before or after each drying section a gas processing device is placed in the way of the gas stream. Advantageously, the structure for holding the products to be dried are at least one drying path which ensures passing of the products to be dried.

Method and apparatus for drying products, especially corn or piece

An agricultural cutter has in its drive train a pulley for a V-belt. Between the rim of the pulley and the spokes thereof, coil compression springs are provided, so that upon the imposition of high power demand during cutting of an agricultural product, power will be momentarily stored in the spring and then released in connection with the cutting operation.

Gear unit for power-saving drive of working elements of rotary or

Growing community of inventors

Budapest, Hungary

Imre Szabo