FIELD: mechanical engineering; heat exchanger equipment.
SUBSTANCE: invention relates to multistage heat exchange device containing primary and secondary circuits to provide heat exchange in which heat carrier passes in opposite directions. According to invention, primary circuit has at least two points of supply of heat carrier displaced relative to each other in direction of flow. Said device contains also system of valves interacting with temperature sensors and regulating heat carrier flow through primary circuit. Valve gear for each heat carrier supply point has separate valve.
EFFECT: provision of stable control of temperature at output of secondary circuit.
5 cl, 3 dwg
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