国内毛片无码不卡免费_国产精品免费av片在线_久在线视视频在线观看_手机看片福利日韩国产_特性服务5星辰女儿的朋友_亚洲日韩精品第五十八页_色婷婷色六月综合_亚洲欧美欧美色欲_99九九热久久只有精品18_老湿机免费体验三分钟

 釬焊板式換熱器， 是由一系列具有一定波紋形狀的金屬片疊裝經(jīng)過釬焊加工而成的一種新型高效換熱器。各種板片之間形成薄矩形通道，通過半片進行熱量交換。它與常規(guī)的管殼式換熱器相比，在相同的流動阻力和泵功率消耗情況下，其傳熱系數(shù)要高出很多，在適用的范圍內(nèi)有取代管殼式換熱器的趨勢。
A brazed plate heat exchanger is a new type of high efficiency heat exchanger made of a series of metal sheets with corrugated shapes and brazed by brazing. Thin rectangular channels are formed between the plates, and heat exchange is carried out by halves. Compared with the conventional shell and tube heat exchangers, the heat transfer coefficient is much higher in the same flow resistance and pump power consumption, and has a tendency to replace the shell and tube heat exchangers in the applicable range.