Page 162 - Design and Operation of Heat Exchangers and their Networks
P. 162

150   Design and operation of heat exchangers and their networks



              10 7
              10 6
                                              III      IV
              10 5

              10 4                       II
                                                            V      VI
            a (W/m 2 K)  10 3 2  I


              10
                              Boiling curve
               10
               1

              0.1

             0.01
               0.01      0.1       1        10        10 2     10 3     10 4
                                           Δt (K)
              10 7
                                              III      IV
                                                            V      VI
              10 6
              10 5
                                         II
              10 4

             q (W/m 2 )  10 3 2  I
                                Boiling curve
              10
               10

                1

              0.1

              0.01
               0.01      0.1       1        10        10 2     10 3     10 4
                                           Δt (K)
          Fig. 4.1 Nukiyama boiling curve with data of Farber and Scorah (1948).
   157   158   159   160   161   162   163   164   165   166   167