在蒸發結晶技術中
，為了提高加熱蒸汽的經濟性，除了采用多效蒸發操作之外，工業上還常常采用其它措施，現介紹如下。

1．蒸汽噴射熱泵蒸發

    熱泵蒸發原理為：shengzhengqiyouzhengqipenshebengjiangzhengfaqizhongchanshengdeercizhengqichouxibingyasuo
，yushengzhengqihunhe，congershidipinweideercizhengqibianweigaopinweidejiarezhengqizaiciliyong，shishengzhengqixiaohaodadajiangdi，lirudanxiaorebengzhengfadezhengqixiaohaokedadaoshuangxiaoshenzhisanxiaodeshuiping。rebengzhengfayouqishiyongyureminxingwuliao、沸點升高值小的物料和能夠提供高壓蒸汽的場合。噴射式熱泵稍加變化還可用作過熱蒸汽變為飽和蒸汽的裝置。

2．冷凝水預熱與閃蒸：冷凝水顯熱的利用

    蒸zheng發fa器qi的de加jia熱re室shi排pai出chu大da量liang冷leng凝ning水shui
，如ru果guo這zhe些xie具ju有you較jiao高gao溫wen度du的de冷leng凝ning水shui直zhi接jie排pai走zou，則ze會hui造zao成cheng大da量liang的de能neng源yuan和he水shui源yuan的de浪lang費fei。為wei了le充chong分fen利li用yong這zhe些xie冷leng凝ning水shui

，可ke以yi將jiang其qi用yong作zuo預yu熱re料liao液ye或huo加jia熱re其qi它ta物wu料liao，也ye可ke以yi用yong減jian壓ya閃shan蒸zheng的de方fang法fa使shi之zhi產chan生sheng部bu分fen蒸zheng汽qi與yu二er次ci蒸zheng汽qi一yi起qi作zuo為wei下xia一yi效xiao蒸zheng發fa器qi的de加jia熱re蒸zheng汽qi。有you時shi，還hai可ke根gen據ju生sheng產chan需xu要yao，作zuo為wei其qi它ta工gong藝yi用yong水shui。

3．機械壓縮熱泵(MVR)蒸發

    MVR 蒸發原理：jiangzhengfaqizhengchudedeercizhengqiyongyasuojiyasuo，tigaoqiyali，shiqibaohewenduchaoguorongyedefeidian
，ranhousonghuizhengfadejiareshizuoweijiarezhengqi，cizhongfangfachengweijixieyasuorebengzhengfa。caiyongjixieyasuorebengzhengfazhixuzaizhengfaqikaigongjieduangongyingjiarezhengqi
，dangcaozuodadaowendinghou
，buzaixuyaojiarezhengqi，zhixutigongshiercizhengqishengyasuoxuyaodegong，yinerjieshengledaliangdeshengzhengqi。tongchang，zaidanxiaozhengfaheduoxiaozhengfademoxiaozhong，ercizhengqideqianrequanbuyoulengningshuidaizou，erzairebengzhengfazhong，budanmeiyoucixiangresunshi，erqiebuxiaohaolengqueshui，zheshirebengzhengfajienengdeyuanyinsuozai。danyingzhichu，jixieyasuorebengzhengfabushiheyufeidianshangshengjiaodaderongyedezhengfa。zheshiyouyurongyedefeidianshenggaojiaodashi，zhengfaqidechuanretuidonglibianxiao，yinerercizhengqisuoxudeyasuobijiangbianda，zhezaijingjishangjiangbiandebuheli。ciwai，yasuojidetouzijiaoda，jingchangyaoweixiubaoyang
，zhexiequedianzaiyidingchengdushangyexianzhilerebengzhengfadeyingyong。