PURPOSE: To improve the heat exchange efficiency and to make the construction of the heat exchanger highly efficient and compact in size by providing heat transfer fins fitted to heat transfer tubes and a multilayer body having a plurality of needle-shaped pieces at a specific inclination angle around the outer periphery of the heat transfer tube, and causing a vapor absorbing liquid to flow down along the heat transfer fins in a dispersed manner.
CONSTITUTION: A heat transfer fin material 4 is bent at the central part to set the configuration of heat transfer fins 2. After winding the heat transfer fins 2 around the heat transfer tubes 1, the heat transfer tubes are inclined so that they assume a predetermined heat transfer fin angle θ to make up a substance shift heat exchanger. A flowing down vapor absorbing liquid 7 flows into a space 6, and thereafter the liquid is held until the liquid holding effect due to surface tension and the liquid flowdown effect due to gravity and flowpath resistance are balanced with each other. Thereafter, the liquid flows down and such a periodical vibration phenomenon occurs in which the liquid 7 is held or flows down. The vibration of the liquid membrane displays effect for vapor generation. The vibration of the liquid occurs when the inclination angle 3 of heat transfer fins is in the range of 30°W80°. Further, the minimum value dmin of layer intervals in which vibration occurs is dmin/SW2.0 when represented in terms of the layer interval S of the multilayer body of heat transfer fins.
| JP6779372 | How to make a heat exchanger |
IKEUCHI MASAKI
YUMIKURA TSUNEO
OZAKI EIICHI
| JP59191074B |
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