3Harper W J. Sanitation in dairy food plants [ A]. In: Guthrie. Food Sanitation [M] . Westprot C T: AVIpub. Company Inc, 1972.
4Walker P. On - line Automatic Tube Cleaning [ J] . Engineering Systems, 1994, 10:58-62.
5Bremford D J, Mtiller - Steinhagen H M, Duffy G G. Heat trans- fer to kraft black liquor in liquid - solid fluidized [J]. Heat Transfer Eng, 2000, 21 : 57
6Kang Y, Fan L T, Kim S D. Immersed heater to bed heat transfer in liquid -solid fluidized beds[J]. AIChEJ, 1991, 37 (7) : 1101.
8WEBB R L. Performance evolution criteria for use of enhanced heat exchanger surfaces in heat exchanger design [J]. International Journal of Heat and Mass Transfer, 1981, 24: 715-726.
9MOFFAT R J. Using uncertainty analysis in the planning of an experiment[J]. Journal of Fluids Engineering, 1985, 107(2): 173-178.
