鹽水制(zhi)(zhi)冰是應用較(jiao)廣泛、歷(li)史(shi)悠久的一種間接冷卻制(zhi)(zhi)冰方法(fa)。制(zhi)(zhi)出(chu)的冰堅實、不易(yi)融(rong)化,便于貯藏和搬運(yun),在國(guo)內漁業、食品業、運(yun)輸業及醫(yi)療機構等行業中使用的比較(jiao)普遍。下面給大(da)家(jia)介紹關于鹽水制(zhi)(zhi)冰機的制(zhi)(zhi)冰流程有哪些?以及溫度如何測定?的內容,歡迎大(da)家(jia)閱讀(du)!
鹽水制冰機的制冰流程:
鹽水(shui)(shui)(shui)制(zhi)冰(bing)(bing)是一種間(jian)接(jie)冷卻(que)(que)系(xi)統。在(zai)(zai)傳(chuan)統的(de)(de)咸水(shui)(shui)(shui)制(zhi)冰(bing)(bing)池(chi)中(zhong)(zhong)(zhong),蒸發(fa)器(qi)(qi)(qi)鹽水(shui)(shui)(shui)池(chi)和鹽水(shui)(shui)(shui)制(zhi)冰(bing)(bing)池(chi)組(zu)(zu)合成(cheng)一個制(zhi)冰(bing)(bing)池(chi),由(you)隔(ge)板隔(ge)開。在(zai)(zai)鹽水(shui)(shui)(shui)在(zai)(zai)蒸發(fa)器(qi)(qi)(qi)鹽水(shui)(shui)(shui)池(chi)中(zhong)(zhong)(zhong)冷卻(que)(que)后(hou),它在(zai)(zai)攪拌(ban)器(qi)(qi)(qi)的(de)(de)作用(yong)下進入制(zhi)冰(bing)(bing)鹽水(shui)(shui)(shui)池(chi)以冷卻(que)(que)冰(bing)(bing)桶(tong)。在(zai)(zai)溫度升高之后(hou),鹽水(shui)(shui)(shui)從另一側流入蒸發(fa)器(qi)(qi)(qi)鹽水(shui)(shui)(shui)池(chi)以進一步冷卻(que)(que)。在(zai)(zai)鹽水(shui)(shui)(shui)制(zhi)冰(bing)(bing)設備(bei)中(zhong)(zhong)(zhong),蒸發(fa)器(qi)(qi)(qi)中(zhong)(zhong)(zhong)制(zhi)冷劑(ji)的(de)(de)熱(re)量吸(xi)收(shou)鹽水(shui)(shui)(shui),保(bao)持鹽水(shui)(shui)(shui)冷卻(que)(que)在(zai)(zai)-10~14℃左右。當冰(bing)(bing)桶(tong)中(zhong)(zhong)(zhong)的(de)(de)水(shui)(shui)(shui)被凍(dong)結時,冰(bing)(bing)桶(tong)組(zu)(zu)將由(you)起重機連續地從制(zhi)冰(bing)(bing)罐(guan)(guan)中(zhong)(zhong)(zhong)提起并放(fang)(fang)入冰(bing)(bing)融化(hua)罐(guan)(guan)中(zhong)(zhong)(zhong)以融化(hua)冰(bing)(bing),然(ran)后(hou)將冰(bing)(bing)架用(yong)于(yu)脫(tuo)水(shui)(shui)(shui),并且冰(bing)(bing)將被儲存或直接(jie)通過滑行路徑運輸到冰(bing)(bing)儲存器(qi)(qi)(qi)中(zhong)(zhong)(zhong)。脫(tuo)水(shui)(shui)(shui)后(hou),將空冰(bing)(bing)桶(tong)裝滿(man)水(shui)(shui)(shui),然(ran)后(hou)放(fang)(fang)入制(zhi)冰(bing)(bing)罐(guan)(guan)中(zhong)(zhong)(zhong)繼續生產,等等。

鹽水制冰機的溫度的測定:
1)鹽(yan)水(shui)(shui)溫(wen)度(du)t1 t1直接影(ying)響冷凍速度(du)和冰(bing)(bing)塊質量。 T1降(jiang)低,冷凍速度(du)增加(jia),但(dan)蒸(zheng)發溫(wen)度(du)要求降(jiang)低,因此制冷系數(shu)降(jiang)低。 T1增加(jia),這不利(li)于鹽(yan)水(shui)(shui)和冰(bing)(bing)桶之間的熱傳遞,并減慢冷凍速度(du)。一般t1-10℃。
2)鹽水溫(wen)度與蒸發(fa)溫(wen)度t2之(zhi)間的溫(wen)差較大,可(ke)加(jia)(jia)速鹽水與制冷(leng)劑之(zhi)間的傳熱,有利于鹽水的冷(leng)卻,但隨(sui)著t2的增(zeng)加(jia)(jia),蒸發(fa)溫(wen)度降低將需要,這將導致壓縮機(ji)的單位功耗增(zeng)加(jia)(jia)。因此,蒸發(fa)溫(wen)度與鹽水溫(wen)差在5℃之(zhi)間。
3)鹽(yan)水(shui)的(de)(de)(de)(de)凝(ning)固(gu)溫度必須(xu)確保它不會在(zai)低溫下凍結(jie),以保持鹽(yan)水(shui)在(zai)制冰池中循環(huan)。如果(guo)(guo)鹽(yan)水(shui)的(de)(de)(de)(de)冷凍溫度接(jie)近蒸(zheng)發溫度,則鹽(yan)水(shui)有凍結(jie)的(de)(de)(de)(de)風險。但是,如果(guo)(guo)要求鹽(yan)水(shui)的(de)(de)(de)(de)凝(ning)固(gu)溫度太低,則由于鹽(yan)水(shui)濃度的(de)(de)(de)(de)增加,攪拌(ban)器的(de)(de)(de)(de)功率消耗將增加。因此,鹽(yan)水(shui)冷凍溫度比蒸(zheng)發溫度低6~8℃。
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