In　this　paper,　a　microchannel-based　cryocooler　consisting　of　a　compressor,　a　recuperator　and　a　cold　heat　exchanger　has　been　developed　to　study　the　feasibility　of　cryogenic　cooling　by　the　use　of　Joule-Thomson　effect　and　Bernoulli　effect.　A　set　of　governing　equations　including　Bernoulli　equations　and　energy　equations　are　introduced　and　the　performance　of　the　cooler　is　calculated.　The　influences　of　some　working　conditions　and　structure　parameters　on　the　performance　of　coolers　are　discussed　in　details.　©　2004　Elsevier　Ltd.　All　rights　reserved.