饱和器底部温差对HAT循环性能的影响

EFFECT OF TEMPERATURE DIFFERENCE AT THE BOTTOM OF SATURATOR ON THE PERFORMANCE OF HAT CYCLE

研究了饱和器底部温差ＳＴＤ对循环性能的影响．理论分析发现，随着饱和器底部温差的增加，循环效率随之降低，而饱和器出口处空气的含湿量、单位输出功的水消耗及比功都有所提高，通过中冷器、后冷器及热水器的水流量也随之增大；当饱和器出口空气的相对湿度增大时，循环电端效率、单位输出功的水消耗及比功都有一定幅度的提高，通过中冷器、后冷器及热水器的水流量却有所降低．就水流量而言，从饱和器底部放出的水量（ＭＷ４）较多，受饱和器底部温差的影响也较大，其余依次是热水器（ＭＷ３）、循环回水（ＭＷ５）、后冷器（ＭＷ２）和中冷器（ＭＷ１）．

The temperature difference at the bottom of saturator STD is one of theimportant parameters influencing the performance of HAT.cycle. The effect of STD on HATcycle performance is studied in this paper. As STD rises, cycle efficiency tends to decrease,but water content in outlet air of saturator, specific water consumption and specific worktend to increasel and relative humidity of outlet air of saturator rises, cycle efficiency, andspecific work increase to a certain extent, however, water flows decrease in intercooler, aftercooler and economizer. In the light of water floW, the outlet water flow rate from the bottom of saturator is maximum, and it is most influenced by S7'D, then in the consecutive order, are the flow rates of economizer (MW3 ), circulated water (MWS ), aftercooler(MW2), and intercooler (MW1).