| 摘要 |
The present invention relates to a coil assembly (14, 34) for use in an evaporative parallel flow or counterflow heat exchanger (10, 30) wherein the heat exchanger (10, 30) comprises a conduit (12, 32) oriented in a vertical direction through which external heat exchange fluids flow in a generally vertical direction, the coil assembly (14, 34) being mountable within the conduit (12, 32), the coil assembly (14, 34) comprising inlet (46) and outlet manifolds (48) and a plurality of tubes (58, 98, 108) connecting the manifolds (46, 48), the tubes (58, 98, 108) including bights (62, 102, 112) and segments (60, 100, 110) extending generally horizontally across the conduit (12, 32) and connected to at least one bight (62, 102, 112), the bights (62, 102, 112) being oriented vertically and connecting segments (60, 100, 110) of the tube (58, 98, 108) at different levels within the conduit (12, 32,) the bights (62c, d, e, 102a, b, c, 112a, b, c) of adjacent tubes (58c, d, e, 98a, b, c, 108a, b, c) being in contact with each other, the segments (60c, d, e, 100a, b, c, 110a, b, c) having a generally elliptical cross sectional shape such that the segments (60c, d, e, 100a, b, c, 110a, b, c) of adjacent tubes (58c, d, e, 98a, b, c, 108a, b, c) are spaced from each other in a direction generally normal to the flow direction. The elliptical segments (110) may be angled in the same or opposite directions as long as the spacing is maintained between the segments (110a, b, c) of adjacent tubes (98a, b, c). The bights (62, 102, 112) may have a circular or elliptical cross section. |
