鹽水制(zhi)冰(bing)(bing)是應用較廣泛、歷史悠久的一種間接冷卻(que)制(zhi)冰(bing)(bing)方(fang)法。制(zhi)出的冰(bing)(bing)堅(jian)實、不易融化,便于(yu)貯藏和搬運,在國(guo)內漁業(ye)(ye)、食品業(ye)(ye)、運輸業(ye)(ye)及(ji)醫療機構等行(xing)業(ye)(ye)中使用的比(bi)較普(pu)遍(bian)。下面給(gei)大家介(jie)紹關于(yu)鹽水制(zhi)冰(bing)(bing)機的制(zhi)冰(bing)(bing)流程以及(ji)溫度如何測(ce)定?的內容(rong),歡迎大家閱讀!
鹽水制冰機的制冰流程:
鹽(yan)(yan)(yan)水(shui)(shui)(shui)制(zhi)冰(bing)(bing)(bing)是一種間接(jie)(jie)冷(leng)(leng)卻(que)系統。在(zai)(zai)傳統的咸(xian)水(shui)(shui)(shui)制(zhi)冰(bing)(bing)(bing)池(chi)中(zhong)(zhong),蒸發(fa)器(qi)(qi)(qi)(qi)鹽(yan)(yan)(yan)水(shui)(shui)(shui)池(chi)和鹽(yan)(yan)(yan)水(shui)(shui)(shui)制(zhi)冰(bing)(bing)(bing)池(chi)組合成一個制(zhi)冰(bing)(bing)(bing)池(chi),由隔(ge)板隔(ge)開。在(zai)(zai)鹽(yan)(yan)(yan)水(shui)(shui)(shui)在(zai)(zai)蒸發(fa)器(qi)(qi)(qi)(qi)鹽(yan)(yan)(yan)水(shui)(shui)(shui)池(chi)中(zhong)(zhong)冷(leng)(leng)卻(que)后,它(ta)在(zai)(zai)攪(jiao)拌器(qi)(qi)(qi)(qi)的作(zuo)用(yong)下進入(ru)(ru)制(zhi)冰(bing)(bing)(bing)鹽(yan)(yan)(yan)水(shui)(shui)(shui)池(chi)以冷(leng)(leng)卻(que)冰(bing)(bing)(bing)桶。在(zai)(zai)溫度升高之(zhi)后,鹽(yan)(yan)(yan)水(shui)(shui)(shui)從另一側流入(ru)(ru)蒸發(fa)器(qi)(qi)(qi)(qi)鹽(yan)(yan)(yan)水(shui)(shui)(shui)池(chi)以進一步冷(leng)(leng)卻(que)。在(zai)(zai)鹽(yan)(yan)(yan)水(shui)(shui)(shui)制(zhi)冰(bing)(bing)(bing)設(she)備中(zhong)(zhong),蒸發(fa)器(qi)(qi)(qi)(qi)中(zhong)(zhong)制(zhi)冷(leng)(leng)劑的熱量吸收鹽(yan)(yan)(yan)水(shui)(shui)(shui),保持(chi)鹽(yan)(yan)(yan)水(shui)(shui)(shui)冷(leng)(leng)卻(que)在(zai)(zai)-10~14℃左右。當冰(bing)(bing)(bing)桶中(zhong)(zhong)的水(shui)(shui)(shui)被(bei)凍結時,冰(bing)(bing)(bing)桶組將(jiang)由起重機連續地從制(zhi)冰(bing)(bing)(bing)罐中(zhong)(zhong)提起并(bing)放入(ru)(ru)冰(bing)(bing)(bing)融(rong)化(hua)(hua)罐中(zhong)(zhong)以融(rong)化(hua)(hua)冰(bing)(bing)(bing),然后將(jiang)冰(bing)(bing)(bing)架用(yong)于脫水(shui)(shui)(shui),并(bing)且冰(bing)(bing)(bing)將(jiang)被(bei)儲存或直(zhi)接(jie)(jie)通(tong)過(guo)滑(hua)行(xing)路徑運輸到冰(bing)(bing)(bing)儲存器(qi)(qi)(qi)(qi)中(zhong)(zhong)。脫水(shui)(shui)(shui)后,將(jiang)空冰(bing)(bing)(bing)桶裝滿水(shui)(shui)(shui),然后放入(ru)(ru)制(zhi)冰(bing)(bing)(bing)罐中(zhong)(zhong)繼續生產,等等。
鹽水制冰機的溫度的測定:
1)鹽水溫度(du)t1 t1直(zhi)接影(ying)響冷凍(dong)速(su)(su)度(du)和冰塊(kuai)質量。 T1降低(di),冷凍(dong)速(su)(su)度(du)增加(jia),但蒸(zheng)發溫度(du)要求降低(di),因此制冷系數降低(di)。 T1增加(jia),這(zhe)不(bu)利(li)于鹽水和冰桶之間的(de)熱傳遞,并減慢冷凍(dong)速(su)(su)度(du)。一(yi)般(ban)t1-10℃。
2)鹽(yan)水溫(wen)度與蒸(zheng)發(fa)溫(wen)度t2之(zhi)間的(de)溫(wen)差較大,可加(jia)速(su)鹽(yan)水與制(zhi)冷劑之(zhi)間的(de)傳熱,有利(li)于鹽(yan)水的(de)冷卻,但隨(sui)著t2的(de)增(zeng)加(jia),蒸(zheng)發(fa)溫(wen)度降低(di)將(jiang)需(xu)要,這將(jiang)導致(zhi)壓縮機的(de)單位功耗(hao)增(zeng)加(jia)。因此(ci),蒸(zheng)發(fa)溫(wen)度與鹽(yan)水溫(wen)差在5℃之(zhi)間。
3)鹽水(shui)的凝固溫(wen)(wen)度(du)必須確保它不(bu)會在(zai)低(di)溫(wen)(wen)下凍結,以保持(chi)鹽水(shui)在(zai)制(zhi)冰(bing)池中循環。如果(guo)鹽水(shui)的冷(leng)凍溫(wen)(wen)度(du)接近蒸發溫(wen)(wen)度(du),則鹽水(shui)有(you)凍結的風險(xian)。但是,如果(guo)要(yao)求鹽水(shui)的凝固溫(wen)(wen)度(du)太低(di),則由(you)于鹽水(shui)濃度(du)的增加,攪拌器(qi)的功率消耗將增加。因此,鹽水(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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