HEAT EXCHANGER Russian patent published in 1995 - IPC

FIELD: power engineering. SUBSTANCE: tube layers are distributed over groups with the same number of starts in each group. Proper relationships are used to determine both number of layers in the first group, and relation between layers of different groups. Housing with apertures placed over circumference in its lower part is located coaxially with the shells to reduce and level shell temperature. Outdoor air flows around the shells surface through the apertures at the expense of natural convection. The convection obstructs formation of the gap between the shell and tube bundle and prevents gas "getting through" along the shell. EFFECT: high efficiency. 5 cl, 2 dwg