EVAPORATION HEAT EXCHANGE DEVICE WITH COIL FROM RIBBED ELLIPTICAL PIPE ASSEMBLY Russian patent published in 2014 - IPC F25B39/02 F28D5/02 

FIELD: heating.

SUBSTANCE: improved coil assembly includes preferably coiled pipes. These pipes mainly have elliptical cross section with external ribs (20) shaped on the external surface of pipes. Ribs are spaced from each other with an interval corresponding substantially from 1.5 to substantially 3.5 ribs per inch (2.54 cm), along the longitudinal axis (13) of pipes, besides, ribs have height from the outer surface of the pipes, making substantially from 23.8% to substantially 36% of the nominal external diameter of the pipe, and have thickness making substantially from 0.007 inch (0.018 cm) to substantially 0.020 inch (0.051 cm). Pipes are spaced with a centre-to-centre interval (DH) mainly along the horizontal line, which is perpendicular to the longitudinal axis of pipes and makes substantially from 109% to substantially 125% of the nominal outer diameter of the pipe, and mainly with a vertical centre-to-centre interval (DV), making substantially from 100% to approximately 131% of the nominal external diameter of the pipe.

EFFECT: increased efficiency of an evaporation heat exchanger.

35 cl, 16 dwg, 1 tbl