86 
MR. T. E, STANTON ON THE PASSAGE OE HEAT BETWEEN 
The results stated in Tables V. and VI. would, therefore, seem to show that the 
conductivity coefficients in the passage of heat between a metal surface and water in 
contact with it, will depend, in their value, on the direction of the flow of heat, the 
viscosity of the film of water at the surface having much less effect when the heat 
flows from metal to water than when the flow is in the opposite direction. 
The experiments were made in the Whitworth Engineering Laboratory, Owens 
College, in 1895 and 1896, the author being at that time Demonstrator in Engineering 
in Owens College, 
Table I.—Copper Pipe, No. I. 47‘0 centims. long, 1*39 centim. diameter. 
Value of n = 1*86. 
To- 
h- 
h- 
w. 
log^o-h, 
Tq—G 
p;i-2 
1 + aTf,. 
1 + fitm- 
h. 
47-20 
18-00 
23-92 
123-2 
1-96 
•2263 
1-086 
1-1S9 
1-209 
•0105 
39-10 
18 01 
22-22 
123-2 
1-96 
-2224 
1-082 
1-156 
1-201 
•0106 
32-28 
18-05 
20-83 
123-2 
1-96 
-2171 
1-079 
1-129 
1-194 
•0105 
50-55 
33-25 
37-00 
123-2 
1-96 
-2440 
1-134 
1-202 
1-351 
•0104 
40-25 
25-10 
28-20 
123-2 
1-96 
•2286 
1-106 
1-161 
1-266 
•0105 
34-50 
18-15 
21-39 
123-2 
1-96 
•2206 
1-080 
1-137 
1.198 
•0107 
41-55 
18-18 
22-85 
123-2 
1-96 
•2227 
1-083 
1-166 
1-205 
•0105 
47-26 
17-99 
24-14 
98-0 
1-90 
•2356 
1-086 
1-189 
1-211 
•0105 
.39-15 
18-00 
22-38 
98-0 
1-90 
•2318 
1-082 
1-157 
1-202 
•0107 
32-31 
18-03 
20-90 
98-0 
1-90 
•2241 
1-079 
1-129 
1-195 
•0106 
45-00 
18-79 
24-18 
98-0 
1-90 
•2300 
1-088 
1-180 
1-215 
•0103 
50-25 
33-25 
37-03 
98-0 
1-90 
•2512 
1-134 
1-201 
1-351 
•0104 
40-25 
25-20 
28-40 
98‘0 
1-90 
•2387 
1-107 
1-161 
1-268 
•0106 
Table II.—Copper Pipe, No. I. 47*0 centims. long, 1*39 centim. diameter. 
Value of n = 1*86 
To- 
h- 
h- 
IV. 
°To-^. 
pn-i 
■ 
1 +! ZTq . 
h. 
47-33 
17-98 
24-45 
69-0 
1-80 
•2487 
1-087 
1-189 
1-212 
•0105 
39-20 
18-00 
22-60 
69-0 
1-80 
•2443 
1-083 
1-157 
1-203 
■0107 i 
32-35 
18-03 
21-03 
69-0 
1-80 
•2348 
1-080 
1-129 
1-195 
■0105 i 
1 
45-00 
18-77 
24-28 
83-6 
1-86 
•2358 
1-088 
1-180 
1-215 
•0104 
39-65 
18-82 
23-15 
83-6 
1-86 
•2325 
1-086 
1-158 
1-210 
•0104 
54-25 
42-20 
45-10 
83-6 
1-86 
•2750 
1-160 
1-217 
1-436 
•0106 
39-52 
18-32 
23-02 
58-1 
1-767 
•2504 
1-085 
1-158 
1-206 
•0107 
39-55 
18-35 
23-26 
43-6 
1-696 
■2632 
1-085 
1-158 
1-208 
•0108 
40-30 
18-43 
23-65 
28-7 
1-600 
•2725 
1-086 
1-160 
1-210 
•0105 1 
1 
