Sewage Sludge Drying Based on Heat Pump
A suit of low temperature test dryer for sewage sludge drying based on heat pump was put forward in this paper. Principle and characteristic of this equipment was introduced. Sewage sludge drying mechanism were briefly summaried from literatures.Factors such as drying air temperature and flow speed that effect sewage sludge drying process were discussed. Drying temperature and flow speed both contribute positively to drying speed in initial drying section while contributing little in the evening section of drying process. Change of superficial morphology during the drying process was analyzed. Economy of this low temperature dryer based on heat pump was discussed. Results show that the operation cost is equal to the operation cost of the dryer with coal as heat source, while is less than half of the dryer with electricity or natural gas as heat source.
Sewage sludge Heat pump Drying Characteristics
Yu Wan Yang jun Li Peisheng Hu Yi Li Jie Yue Yanan Hu Niansu Yang Guolu
College of Power & Mechanical Engineering, Wuhan University, Wuhan 430072, P.R. China; Sewage Sludge School of Water Resources & Hydropower, Wuhan University, Wuhan 430072, P.R. China; Sewage Sludge an
国际会议
2007杭州国际动力工程会议(The International Conference on Power Engineering 2007)
杭州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）