摘要：This study presents theoretica. considera.ions a.d results of a.porta.le shell a.d tube hea. excha.ger in a.sola. wa.er distiller system. The device is composed of a.gla.s hea. excha.ger, which served a. a.condenser for va.or condensing which were produced in bla.k pa.nt sola. a.sorber. It wa. a.so composed of a.ta.k for wa.er source a.d a.ta.k for produced distilled wa.er. Shell a.d tube wa. designed a.d simula.ed using a. implicit numerica. scheme. Simula.ion results showed tha. a.cumula.ed ma.s wa.er grea.ly depended on the inlet va.or tempera.ure a.d volume, hea. excha.ger ma.eria., coola.t wa.er tempera.ure a.d volume. Thus, cha.ging the ma.eria. from sta.nless steel to gla.s in the sa.e condition （va.or tempera.ure, va.or volume, coola.t tempera.ure a.d coola.t volume）. These inexpensive shell a.d tube hea. excha.gers permitted to produce 40 litre/da., distilled wa.er from va.or with 378 K inlet tempera.ure in a.mosphere pressure. If inlet pressure increa.es, va.or tempera.ure will decline a.d thereupon, hea. excha.ger＇s efficiency ta.gibility will increa.e.