【摘要】：在對內(nèi)融冰式蓄冰槽內(nèi)不同水層的水進行過冷度測試中發(fā)現(xiàn)上層水的過冷度較大。為了降低水的過冷度和冷水機組能耗,通過實驗的方法對不同的成核添加劑進行篩選測試,結(jié)果顯示納米氧化銅不但在降低過冷度方面效果顯著,而且提高了蓄冰效率。最后獲取了一定質(zhì)量分散劑下最佳納米氧化銅的質(zhì)量分?jǐn)?shù),即在-5℃的制冰溫度下,質(zhì)量分?jǐn)?shù)為0.10%的氧化銅懸濁液為最佳配比。在實驗過程中發(fā)現(xiàn)水的過冷度還與換熱介質(zhì)的傳熱溫差有關(guān),溫差越大過冷度越小。
[Abstract]:It is found that the supercooling degree of the upper layer water is higher than that of the inner melt ice storage tank by measuring the subcooling degree of the water in different water layers in the inner melting ice storage tank. In order to reduce the undercooling degree of water and the energy consumption of chillers, different nucleation additives were screened and tested by experimental method. The results show that nano-copper oxide not only reduces the undercooling degree, but also improves the ice storage efficiency. Finally, the optimum mass fraction of nano-copper oxide under certain mass dispersant was obtained, that is, the optimum proportion of copper oxide suspension was 0.10% at -5 鈩，

本文編號：2358232