CAJ | 학술논문

机械蒸汽再压缩（MVR）蒸发系统是一种高效节能的蒸发体系。本文采用降膜蒸发器为蒸发主体、罗茨压缩机为蒸汽压缩机，并以水为实验原料研究了一套MVR蒸发装置。实验中以总蒸发水量和单位能耗蒸发水量（SMER）作为MVR蒸发系统的性能指标，分别研究了进料温度、蒸发压强、压缩机频率对其影响。结果表明：最佳进料温度是蒸发压强下的饱和液体温度；最适蒸发压强与具体系统的蒸发能力和压缩机效率密切有关，在压缩机效率保持较高水平的前提下，适当降低蒸发压强有利于系统的节能；压缩机的频率直接影响系统的蒸发量和压缩机的功耗，在压缩机允许的范围内增大压缩机频率，单位能耗蒸发量是增加的。
궤계증기재압축（MVR）증발계통시일충고효절능적증발체계。본문채용강막증발기위증발주체、라자압축궤위증기압축궤，병이수위실험원료연구료일투MVR증발장치。실험중이총증발수량화단위능모증발수량（SMER）작위MVR증발계통적성능지표，분별연구료진료온도、증발압강、압축궤빈솔대기영향。결과표명：최가진료온도시증발압강하적포화액체온도；최괄증발압강여구체계통적증발능력화압축궤효솔밀절유관，재압축궤효솔보지교고수평적전제하，괄당강저증발압강유리우계통적절능；압축궤적빈솔직접영향계통적증발량화압축궤적공모，재압축궤윤허적범위내증대압축궤빈솔，단위능모증발량시증가적。
Mechanical vapor recompression(MVR) evaporation system is a new energy efficient evaporation technology. This paper established a set of MVR evaporator device using water as raw material, falling-film evaporator as evaporating body,and roots compressor as steam compressors. This paper investigated the effects of feed temperature,evaporation pressure and compressor frequency on the evaporation of the total amount of water and specific moisture extraction rate(SMER),which is considered performance indicator of MVR. The results showed that the optimum temperature of the feed was the saturated liquid temperature at the evaporator pressure;the optimum evaporation pressure was closely related to evaporation capacity and compressor efficiency in specific systems;lower the evaporator pressure was beneficial to energy saving when maintaining a high level of efficiency of the compressor;frequency of the compressor directly affected evaporation of the total amount of water and compressor power; SMER increased with the increase of the frequency of the compressor within the allowable range.