FIELD: industrial and municipal systems for heating and cooling flow through water, domestic technique.
SUBSTANCE: portable gas-type heater includes housing in which flow-through ducts for working liquid are arranged. Portable heater is in the form of module having mutually parallel plates between which normally relative to them there are plates whose length is less than that of sides of said mutually parallel plates and shell. Mutually parallel plates, plates and shell form zigzag flow-through rectangular cross - section duct communicated with units for supply and draining working liquid through openings of one of mutually parallel plates. Said mutually parallel plates, plates and shell are rigidly joined one with other. Water is used as working liquid. Similar module may be connected in parallel or in series, possibly by means of flexible hose.
EFFECT: enhanced efficiency, enlarged using range, less massiveness of portable heater.
4 cl, 7 dwg, 1 tbl
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