鹽水(shui)制冰是應用(yong)較廣泛、歷史悠久的(de)(de)一種間接冷卻制冰方法(fa)。制出(chu)的(de)(de)冰堅實、不易融化,便于貯(zhu)藏和搬運,在國(guo)內(nei)漁業(ye)、食品業(ye)、運輸業(ye)及(ji)醫療機構等行業(ye)中(zhong)使用(yong)的(de)(de)比較普遍。下面給大家(jia)介紹關于鹽水(shui)制冰機的(de)(de)制冰流程有哪些?以及(ji)溫度(du)如何測定?的(de)(de)內(nei)容,歡迎大家(jia)閱讀!
鹽水制冰機的制冰流程:
鹽(yan)水(shui)(shui)(shui)(shui)制冰(bing)(bing)(bing)(bing)(bing)是(shi)一種(zhong)間接冷卻(que)(que)系(xi)統。在(zai)傳統的(de)咸水(shui)(shui)(shui)(shui)制冰(bing)(bing)(bing)(bing)(bing)池(chi)中(zhong)(zhong),蒸(zheng)(zheng)發器(qi)鹽(yan)水(shui)(shui)(shui)(shui)池(chi)和鹽(yan)水(shui)(shui)(shui)(shui)制冰(bing)(bing)(bing)(bing)(bing)池(chi)組合成(cheng)一個制冰(bing)(bing)(bing)(bing)(bing)池(chi),由隔板隔開。在(zai)鹽(yan)水(shui)(shui)(shui)(shui)在(zai)蒸(zheng)(zheng)發器(qi)鹽(yan)水(shui)(shui)(shui)(shui)池(chi)中(zhong)(zhong)冷卻(que)(que)后(hou),它在(zai)攪拌器(qi)的(de)作用下進(jin)入(ru)(ru)制冰(bing)(bing)(bing)(bing)(bing)鹽(yan)水(shui)(shui)(shui)(shui)池(chi)以冷卻(que)(que)冰(bing)(bing)(bing)(bing)(bing)桶(tong)(tong)。在(zai)溫度(du)升高之后(hou),鹽(yan)水(shui)(shui)(shui)(shui)從另一側流入(ru)(ru)蒸(zheng)(zheng)發器(qi)鹽(yan)水(shui)(shui)(shui)(shui)池(chi)以進(jin)一步(bu)冷卻(que)(que)。在(zai)鹽(yan)水(shui)(shui)(shui)(shui)制冰(bing)(bing)(bing)(bing)(bing)設備中(zhong)(zhong),蒸(zheng)(zheng)發器(qi)中(zhong)(zhong)制冷劑(ji)的(de)熱(re)量吸收鹽(yan)水(shui)(shui)(shui)(shui),保(bao)持鹽(yan)水(shui)(shui)(shui)(shui)冷卻(que)(que)在(zai)-10~14℃左右。當冰(bing)(bing)(bing)(bing)(bing)桶(tong)(tong)中(zhong)(zhong)的(de)水(shui)(shui)(shui)(shui)被凍結時,冰(bing)(bing)(bing)(bing)(bing)桶(tong)(tong)組將(jiang)(jiang)由起重機連續(xu)地從制冰(bing)(bing)(bing)(bing)(bing)罐(guan)中(zhong)(zhong)提起并放入(ru)(ru)冰(bing)(bing)(bing)(bing)(bing)融化罐(guan)中(zhong)(zhong)以融化冰(bing)(bing)(bing)(bing)(bing),然后(hou)將(jiang)(jiang)冰(bing)(bing)(bing)(bing)(bing)架用于脫水(shui)(shui)(shui)(shui),并且冰(bing)(bing)(bing)(bing)(bing)將(jiang)(jiang)被儲存或直接通過滑行路(lu)徑運輸到(dao)冰(bing)(bing)(bing)(bing)(bing)儲存器(qi)中(zhong)(zhong)。脫水(shui)(shui)(shui)(shui)后(hou),將(jiang)(jiang)空冰(bing)(bing)(bing)(bing)(bing)桶(tong)(tong)裝(zhuang)滿水(shui)(shui)(shui)(shui),然后(hou)放入(ru)(ru)制冰(bing)(bing)(bing)(bing)(bing)罐(guan)中(zhong)(zhong)繼續(xu)生產,等(deng)等(deng)。

鹽水制冰機的溫度的測定:
1)鹽水溫度t1 t1直接(jie)影響冷凍(dong)(dong)速(su)度和冰(bing)塊質量。 T1降低,冷凍(dong)(dong)速(su)度增(zeng)加(jia),但蒸發溫度要求降低,因此制冷系數降低。 T1增(zeng)加(jia),這不利于(yu)鹽水和冰(bing)桶(tong)之間(jian)的熱傳遞,并減慢(man)冷凍(dong)(dong)速(su)度。一般t1-10℃。
2)鹽(yan)水(shui)溫(wen)度(du)與蒸(zheng)發溫(wen)度(du)t2之(zhi)間(jian)的(de)溫(wen)差較大,可加(jia)速鹽(yan)水(shui)與制冷(leng)劑之(zhi)間(jian)的(de)傳熱,有利于鹽(yan)水(shui)的(de)冷(leng)卻,但隨著t2的(de)增加(jia),蒸(zheng)發溫(wen)度(du)降(jiang)低將需要,這將導(dao)致壓縮機的(de)單位功耗增加(jia)。因此(ci),蒸(zheng)發溫(wen)度(du)與鹽(yan)水(shui)溫(wen)差在5℃之(zhi)間(jian)。
3)鹽(yan)(yan)(yan)水(shui)的(de)(de)凝固溫(wen)(wen)度(du)(du)(du)必須確保它不會在低溫(wen)(wen)下凍結,以(yi)保持(chi)鹽(yan)(yan)(yan)水(shui)在制冰池中(zhong)循環。如(ru)果(guo)鹽(yan)(yan)(yan)水(shui)的(de)(de)冷凍溫(wen)(wen)度(du)(du)(du)接近(jin)蒸發溫(wen)(wen)度(du)(du)(du),則鹽(yan)(yan)(yan)水(shui)有凍結的(de)(de)風(feng)險(xian)。但是,如(ru)果(guo)要求(qiu)鹽(yan)(yan)(yan)水(shui)的(de)(de)凝固溫(wen)(wen)度(du)(du)(du)太低,則由(you)于鹽(yan)(yan)(yan)水(shui)濃度(du)(du)(du)的(de)(de)增加,攪(jiao)拌器的(de)(de)功(gong)率消耗將增加。因此,鹽(yan)(yan)(yan)水(shui)冷凍溫(wen)(wen)度(du)(du)(du)比蒸發溫(wen)(wen)度(du)(du)(du)低6~8℃。
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