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冷(leng)熱沖擊實(shi)驗箱過程如下:制(zhi)(zhi)冷(leng)劑(ji)經壓縮(suo)機絕(jue)熱壓縮(suo)到較高的壓力,消耗了功使排氣溫度(du)升高,之后制(zhi)(zhi)冷(leng)劑(ji)經冷(leng)凝器等溫地(di)和四周(zhou)介質進(jin)行熱交換,將熱量傳(chuan)給四周(zhou)介質。后制(zhi)(zhi)冷(leng)劑(ji)經閥(fa)絕(jue)熱膨脹做功,這時(shi)制(zhi)(zhi)冷(leng)劑(ji)溫度(du)降(jiang)低。最后制(zhi)(zhi)冷(leng)劑(ji)通過蒸(zheng)發器等溫地(di)從溫度(du)較高的物(wu)體(ti)吸(xi)熱,使被冷(leng)卻物(wu)體(ti)溫度(du)降(jiang)低。

穩定性(xing)試驗冷(leng)(leng)熱(re)沖(chong)擊(ji)試驗箱過程(cheng)如下:制(zhi)(zhi)冷(leng)(leng)劑(ji)經壓(ya)縮機絕熱(re)壓(ya)縮到(dao)較(jiao)高(gao)(gao)(gao)的(de)壓(ya)力,消耗(hao)了功使排(pai)氣溫(wen)(wen)度升高(gao)(gao)(gao),之后(hou)(hou)制(zhi)(zhi)冷(leng)(leng)劑(ji)經冷(leng)(leng)凝器(qi)等(deng)溫(wen)(wen)地和四(si)周介質進行(xing)熱(re)交(jiao)換(huan),將熱(re)量傳給四(si)周介質。后(hou)(hou)制(zhi)(zhi)冷(leng)(leng)劑(ji)經閥絕熱(re)膨脹(zhang)做(zuo)功,這時制(zhi)(zhi)冷(leng)(leng)劑(ji)溫(wen)(wen)度降低。最后(hou)(hou)制(zhi)(zhi)冷(leng)(leng)劑(ji)通過蒸(zheng)發器(qi)等(deng)溫(wen)(wen)地從(cong)溫(wen)(wen)度較(jiao)高(gao)(gao)(gao)的(de)物(wu)體(ti)吸熱(re),使被(bei)冷(leng)(leng)卻(que)物(wu)體(ti)溫(wen)(wen)度降低。

左(zuo)右(you)移動的(de)溫(wen)(wen)度(du)(du)沖(chong)擊試驗箱采用逆(ni)卡若循環(huan),該循環(huan)由兩個(ge)等(deng)(deng)溫(wen)(wen)過程(cheng)(cheng)和(he)兩個(ge)絕熱過程(cheng)(cheng)組(zu)成。過程(cheng)(cheng)如下(xia):制(zhi)冷(leng)(leng)劑(ji)經(jing)壓(ya)縮機絕熱壓(ya)縮到(dao)較高的(de)壓(ya)力,消耗(hao)了功使排氣溫(wen)(wen)度(du)(du)升高,之(zhi)后制(zhi)冷(leng)(leng)劑(ji)經(jing)冷(leng)(leng)凝器等(deng)(deng)溫(wen)(wen)地和(he)四周介(jie)質(zhi)進行(xing)熱交換(huan),將熱量(liang)傳給四周介(jie)質(zhi)。后制(zhi)冷(leng)(leng)劑(ji)經(jing)閥絕熱膨(peng)脹(zhang)做功,這時制(zhi)冷(leng)(leng)劑(ji)溫(wen)(wen)度(du)(du)降低。最后制(zhi)冷(leng)(leng)劑(ji)通過蒸發器等(deng)(deng)溫(wen)(wen)地從(cong)溫(wen)(wen)度(du)(du)較高的(de)物體(ti)吸(xi)熱,使被冷(leng)(leng)卻物體(ti)溫(wen)(wen)度(du)(du)降低。此(ci)循環(huan)周而復始從(cong)而達到(dao)降溫(wen)(wen)之(zhi)目的(de)。

上下(xia)移動的(de)溫(wen)度(du)沖擊(ji)試驗箱過程如下(xia):制(zhi)冷(leng)劑(ji)(ji)(ji)經壓縮機絕熱(re)(re)(re)壓縮到較高(gao)的(de)壓力,消(xiao)耗了功使排氣溫(wen)度(du)升(sheng)高(gao),之(zhi)后制(zhi)冷(leng)劑(ji)(ji)(ji)經冷(leng)凝(ning)器等(deng)溫(wen)地和四周(zhou)介質(zhi)進行熱(re)(re)(re)交換,將熱(re)(re)(re)量傳(chuan)給(gei)四周(zhou)介質(zhi)。后制(zhi)冷(leng)劑(ji)(ji)(ji)經閥絕熱(re)(re)(re)膨脹做功,這時(shi)制(zhi)冷(leng)劑(ji)(ji)(ji)溫(wen)度(du)降低。最后制(zhi)冷(leng)劑(ji)(ji)(ji)通過蒸發器等(deng)溫(wen)地從(cong)溫(wen)度(du)較高(gao)的(de)物(wu)體吸熱(re)(re)(re),使被冷(leng)卻物(wu)體溫(wen)度(du)降低。此循環周(zhou)而復始從(cong)而達到降溫(wen)之(zhi)目的(de)。

快速高(gao)低(di)(di)溫沖(chong)擊(ji)試驗(yan)箱高(gao)低(di)(di)制(zhi)(zhi)冷(leng)循(xun)環均采用逆卡若循(xun)環,該(gai)循(xun)環由兩個等(deng)溫過(guo)程和(he)兩個絕熱(re)過(guo)程組成(cheng)。過(guo)程如下:制(zhi)(zhi)冷(leng)劑(ji)經壓(ya)縮機絕熱(re)壓(ya)縮到(dao)較(jiao)高(gao)的壓(ya)力(li),消耗了功使排氣(qi)溫度升高(gao),之后制(zhi)(zhi)冷(leng)劑(ji)經冷(leng)凝器等(deng)溫地(di)和(he)四周介(jie)質(zhi)進行熱(re)交換,將熱(re)量傳給(gei)四周介(jie)質(zhi)。后制(zhi)(zhi)冷(leng)劑(ji)經閥絕熱(re)膨脹(zhang)做(zuo)功,這時制(zhi)(zhi)冷(leng)劑(ji)溫度降(jiang)低(di)(di)。最后制(zhi)(zhi)冷(leng)劑(ji)通過(guo)蒸(zheng)發器等(deng)溫地(di)從溫度較(jiao)高(gao)的物(wu)(wu)體吸熱(re),使被冷(leng)卻物(wu)(wu)體溫度降(jiang)低(di)(di)。此循(xun)環周而(er)復始從而(er)達到(dao)降(jiang)溫之目(mu)的。

高低(di)溫(wen)(wen)沖(chong)擊測試試驗箱(xiang)高低(di)制(zhi)(zhi)冷(leng)循環均采用(yong)逆卡(ka)若循環,該循環由兩個(ge)等(deng)溫(wen)(wen)過(guo)程和兩個(ge)絕熱(re)過(guo)程組成。過(guo)程如下:制(zhi)(zhi)冷(leng)劑經(jing)壓縮機(ji)絕熱(re)壓縮到(dao)較高的壓力,消耗了功使(shi)排氣(qi)溫(wen)(wen)度升(sheng)高,之后(hou)制(zhi)(zhi)冷(leng)劑經(jing)冷(leng)凝器等(deng)溫(wen)(wen)地和四(si)周介(jie)質(zhi)進行熱(re)交換,將(jiang)熱(re)量(liang)傳給四(si)周介(jie)質(zhi)。后(hou)制(zhi)(zhi)冷(leng)劑經(jing)閥絕熱(re)膨脹做功,這時制(zhi)(zhi)冷(leng)劑溫(wen)(wen)度降(jiang)低(di)。最后(hou)制(zhi)(zhi)冷(leng)劑通過(guo)蒸發器等(deng)溫(wen)(wen)地從(cong)溫(wen)(wen)度較高的物體(ti)吸(xi)熱(re),使(shi)被(bei)冷(leng)卻物體(ti)溫(wen)(wen)度降(jiang)低(di)。此循環周而復始從(cong)而達到(dao)降(jiang)溫(wen)(wen)之目的。