| 摘要 |
A multi sectional evaporator system comprising first and subsequent evaporator sections capable of cooling the air supply through the evaporator. The first evaporator section is positioned upstream of the subsequent evaporator sections. The warmest refrigerant passes through the first evaporator section, such that the air supply is precooled prior to reaching the subsequent sections. Providing multiple passes of refrigerant through the sectional evaporator system increases the superheat temperature out of the first evaporator up to about 25 degrees Fahrenheit, and increases the mass flow of refrigerant because of the increased heat exchange efficiency provided by counterflow. Moreover, in the preferred embodiment for an A-coil or slant coil, the second evaporator section is positioned over the top of the first evaporator section in order to maximize the use of available space. The coils of the present invention include cut-out shaped corner portions to eliminate dead airspace, conserve space and allow a lower fan speed.
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