Promotion of HCFC-141b hydrate production by lactone sophorolipids
Cold storage air conditioning is an important method to reduce peak-valley difference of power grid and realize peak regulation of the load side of power grid.Refrigerant hydrate as a cold storage medium has the advantages of high cold storage density and high phase change temperature.HCFC-141b refrigerant is a potential cold storage medium.In order to promote the formation of HCFC-141b refrigerant hydrate,the green environmental sophorid glycolipid was selected as a promoter to improve HCFC-141b hydrate formation.The experimental results showed that the addition of lactone sophorolipids could greatly shorten the induction time of HCFC-141b hydrate formation.The mass fraction of sophora sophorolipid affects the nucleation and growth process of hydrate.0.5%was the optimal concentration of lactone sophorolipid to improve hydrate formation,where the average induction time of HCFC-141b hydrate formation was the shortest(about 153min).Experimental results also showed that hydrate formation is random.The addition of lactone sophorolipids could reduce the randomness of hydrate production.The standard deviation of induction time of hydrate formation with 0.5%lactone sophorolipids was smallest in this work,which showed the system with 0.5%lactone sophorolipids could steadily nucleate.The addition of lactone sophorolipids would affect the cold storage capacity of HCFC-141b hydrate.When 0.5%lactone sophorolipids were added,the average cold storage capacity of HCFC-141b hydrate reached 232.45kJ/kg.
hydratesurfactantkineticsrefrigerantcold storagelactone type sophorolipid
万方数据
维普
