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，通過板片進行熱量交換。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，在適用的范圍內有取代管殼式換熱器的趨勢。

Needle and plate heat exchanger is a new type of high efficiency heat exchanger, which is composed of a series of corrugated metal sheets. A thin rectangular channel is formed between the plates through which heat is exchanged. Compared with the conventional shell and tube heat exchanger, the heat transfer coefficient is much higher under the same flow resistance and pump power consumption.