發(fā)布時間：2018-12-12 17:43

【摘要】：為研究泵驅(qū)動兩相復(fù)合制冷機組的工作特性,特別是換熱性能隨工質(zhì)泵頻率和室內(nèi)外溫差的變化規(guī)律,搭建泵驅(qū)動兩相復(fù)合制冷機組的實驗裝置,對其進行了實驗研究.在本實驗裝置中,蒸氣壓縮制冷模式分別采用2.63 k W壓縮機和3.75 k W壓縮機作為驅(qū)動元件,泵驅(qū)動兩相冷卻模式采用帶變頻器的工質(zhì)泵驅(qū)動.結(jié)果表明:室內(nèi)溫度25℃、室外溫度10℃時,機組換熱量隨工質(zhì)泵頻率先增大后減小,在工質(zhì)泵頻率為35 Hz時達(dá)到最大值;能效比(energy efficiency ratio,EER)隨工質(zhì)泵頻率初始變化不明顯,然后逐漸降低.在室外溫度為0~30℃時,實驗獲得了2種運行模式的性能變化情況和最佳轉(zhuǎn)換溫度.
[Abstract]:In order to study the working characteristics of the pump driven two-phase composite refrigeration unit, especially the variation of heat transfer performance with the frequency of the working fluid pump and the indoor and outdoor temperature difference, the experimental equipment of the pump driven two-phase composite refrigeration unit was set up, and the experimental study was carried out. In this experimental device, 2.63 kW compressor and 3.75 kW compressor are used as driving components in the vapor compression refrigeration mode, and the two-phase cooling mode is driven by working fluid pump with frequency converter. The results show that when the indoor temperature is 25 鈩，

本文編號：2375016