鹽水(shui)制冰(bing)是應用較(jiao)廣泛、歷史(shi)悠久的(de)一種間接冷卻制冰(bing)方法。制出的(de)冰(bing)堅實、不易融化(hua),便于貯藏和(he)搬運(yun),在國內漁業(ye)、食品業(ye)、運(yun)輸(shu)業(ye)及(ji)(ji)醫療機構等(deng)行(xing)業(ye)中使用的(de)比較(jiao)普(pu)遍。下面(mian)給大(da)家介紹(shao)關于鹽水(shui)制冰(bing)機的(de)制冰(bing)流(liu)程以及(ji)(ji)溫度(du)如何測定?的(de)內容,歡迎大(da)家閱讀!
鹽水制冰機的制冰流程:
鹽(yan)(yan)(yan)水(shui)制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)是一(yi)種(zhong)間接冷(leng)卻(que)系(xi)統。在傳統的(de)咸水(shui)制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)池中(zhong)(zhong),蒸(zheng)(zheng)(zheng)發器鹽(yan)(yan)(yan)水(shui)池和鹽(yan)(yan)(yan)水(shui)制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)池組合成一(yi)個制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)池,由(you)隔板隔開。在鹽(yan)(yan)(yan)水(shui)在蒸(zheng)(zheng)(zheng)發器鹽(yan)(yan)(yan)水(shui)池中(zhong)(zhong)冷(leng)卻(que)后(hou),它在攪拌器的(de)作用下進入制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)鹽(yan)(yan)(yan)水(shui)池以冷(leng)卻(que)冰(bing)(bing)(bing)桶。在溫度(du)升高之后(hou),鹽(yan)(yan)(yan)水(shui)從另一(yi)側流入蒸(zheng)(zheng)(zheng)發器鹽(yan)(yan)(yan)水(shui)池以進一(yi)步冷(leng)卻(que)。在鹽(yan)(yan)(yan)水(shui)制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)設備中(zhong)(zhong),蒸(zheng)(zheng)(zheng)發器中(zhong)(zhong)制(zhi)(zhi)(zhi)冷(leng)劑(ji)的(de)熱量吸(xi)收(shou)鹽(yan)(yan)(yan)水(shui),保持鹽(yan)(yan)(yan)水(shui)冷(leng)卻(que)在-10~14℃左右。當冰(bing)(bing)(bing)桶中(zhong)(zhong)的(de)水(shui)被凍結時,冰(bing)(bing)(bing)桶組將由(you)起重機連(lian)續地從制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)罐中(zhong)(zhong)提起并(bing)放入冰(bing)(bing)(bing)融化罐中(zhong)(zhong)以融化冰(bing)(bing)(bing),然(ran)后(hou)將冰(bing)(bing)(bing)架(jia)用于(yu)脫水(shui),并(bing)且冰(bing)(bing)(bing)將被儲(chu)存或直接通過滑(hua)行路徑運輸到(dao)冰(bing)(bing)(bing)儲(chu)存器中(zhong)(zhong)。脫水(shui)后(hou),將空冰(bing)(bing)(bing)桶裝滿水(shui),然(ran)后(hou)放入制(zhi)(zhi)(zhi)冰(bing)(bing)(bing)罐中(zhong)(zhong)繼續生產,等(deng)等(deng)。
鹽水制冰機的溫度的測定:
1)鹽水溫度t1 t1直(zhi)接影響冷(leng)(leng)凍速(su)度和(he)冰塊質(zhi)量。 T1降低(di),冷(leng)(leng)凍速(su)度增(zeng)加,但蒸(zheng)發(fa)溫度要求降低(di),因(yin)此制冷(leng)(leng)系數降低(di)。 T1增(zeng)加,這(zhe)不利(li)于(yu)鹽水和(he)冰桶之間的(de)熱傳(chuan)遞,并減慢冷(leng)(leng)凍速(su)度。一(yi)般t1-10℃。
2)鹽水(shui)(shui)溫(wen)(wen)度與(yu)蒸(zheng)(zheng)發溫(wen)(wen)度t2之間(jian)的(de)溫(wen)(wen)差(cha)較大(da),可(ke)加(jia)速鹽水(shui)(shui)與(yu)制冷劑之間(jian)的(de)傳熱,有利于鹽水(shui)(shui)的(de)冷卻,但隨(sui)著(zhu)t2的(de)增加(jia),蒸(zheng)(zheng)發溫(wen)(wen)度降低將需(xu)要,這(zhe)將導致壓縮機的(de)單位功耗(hao)增加(jia)。因此,蒸(zheng)(zheng)發溫(wen)(wen)度與(yu)鹽水(shui)(shui)溫(wen)(wen)差(cha)在5℃之間(jian)。
3)鹽(yan)(yan)水(shui)(shui)的(de)(de)凝(ning)(ning)固溫(wen)(wen)度(du)必(bi)須(xu)確保它不會(hui)在低(di)溫(wen)(wen)下凍結(jie),以保持鹽(yan)(yan)水(shui)(shui)在制冰(bing)池中循(xun)環。如(ru)果鹽(yan)(yan)水(shui)(shui)的(de)(de)冷(leng)凍溫(wen)(wen)度(du)接近蒸發溫(wen)(wen)度(du),則鹽(yan)(yan)水(shui)(shui)有凍結(jie)的(de)(de)風險。但(dan)是,如(ru)果要求(qiu)鹽(yan)(yan)水(shui)(shui)的(de)(de)凝(ning)(ning)固溫(wen)(wen)度(du)太低(di),則由于鹽(yan)(yan)水(shui)(shui)濃度(du)的(de)(de)增加,攪拌器的(de)(de)功率(lv)消耗將(jiang)增加。因此,鹽(yan)(yan)水(shui)(shui)冷(leng)凍溫(wen)(wen)度(du)比蒸發溫(wen)(wen)度(du)低(di)6~8℃。
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