摘要
分别通过浸渍法和焙烧法制备了两种复合吸附剂氯化钙/硅胶和氯化钙/凹凸棒土。在温度40℃、相对湿度20%条件,氯化钙/硅胶复合吸附剂的吸水性能随样本中氯化钙含量的增加而增加。氯化钙/凹凸棒土的最佳焙烧条件为焙烧温度300℃,焙烧时间2 h。在相对湿度为20%,吸附时间分别为15,20 min时,氯化钙/凹凸棒土的SCP分别为140.26,128.92 W/kg,远大于同等条件下氯化钙/硅胶的SCP。两种吸附剂的吸附性能对比表明,氯化钙/凹凸棒土吸附剂由于其良好的吸水性能更加适用于低温驱动的吸附制冷机。
Composite adsorbents of CaCl2/silica gel and CaCl2/attapulgite were prepared by im- pregnation method and calcination method respectively. The adsorption rate is measured at adsorp- tion temperature of 40 ℃ and relative humidity of 20%, the water uptake of composite adsorbent CaCl2/silica gel increases with the increase of CaCl2 content. Under the best performance, CaCl2/at- tapulgite calcination time is 2 hr and calcination temperature is 300 ℃, The SCP of adsorbent Ca- Cl2/attapulgite can reach 140.26 and 128.92 W/kg at adsorption time of 15 and 20 min with relative humidity of 20%, which is largely superior to that of CaCl2/silica gel. Compared with CaCl2/silica gel, the outstanding capacity of water uptake of CaCl2/attapulgite adsorbent at very low regeneration temperature makes this adsorbent promising for air conditioning application driven by low tempera- ture heat source.
出处
《可再生能源》
CAS
北大核心
2012年第9期95-99,共5页
Renewable Energy Resources
基金
中科院院长基金项目(y007y51001)
广东省外专局项目(y006051001)
关键词
吸附制冷
复合吸附剂
硅胶
氯化钙
凹凸棒土
adsorption refrigeration
composite adsorbent
silica gel
calcium chloride
atta-pulgite
