 | American Society of Mechanical Engineers - 1882 - 400 стор.
...square foot of the surface S, at which the air receives heat from the coil, and for each degree of difference between the temperature of the steam and the air of the room. jK"= a coefficient of velocity, such that KV ' = V. p= the unbalanced upward pressure at the base of... | |
 | 1882 - 866 стор.
...square foot of the surface S, at which the air receives heat from the coil, and for each degree of difference between the temperature of the steam and the air of the room. K = a coefficient of velocity, such that KV '= V. p — the unbalanced upward pressure at the base... | |
 | American School (Chicago, Ill.) - 1903 - 380 стор.
...difference in temperature between the steam and surrounding air, was found to vary from about 1.3 to 1.7 BTU The temperature of steam at 3 pounds pressure...the air of the room, in ordinary low-pressure work. If we take the mean of the above results, that is, 1.5 we shall have 150 X 1.5 = 225 BTU as the efficiency... | |
 | American School (Chicago, Ill.) - 1906 - 588 стор.
...difference in temperature between the steam and surrounding air, was found to vary from about 1.3 to 1.7 BTU The temperature of steam at 3 pounds pressure...the air of the room, in ordinary low-pressure work. If we take the mean of the above results, that is, 1.5 we shall have 150 X 1.5 = 225 BTU as the efficiency... | |
 | American School of Correspondence at Armour Institute of Technology, Chicago - 1907 - 460 стор.
...difference in temperature between the steam and surrounding air, was found to vary from about 1.3 to 1.7 BTU The temperature of steam at 3 pounds pressure...the air of the room, in ordinary low-pressure work. If we take the mean of the above results, that is, 1.5 we shall have 150 X 1,5 = 225 BTU as the efficiency... | |
 | American School of Correspondence, Chicago, Charles Lincoln Hubbard - 1908 - 252 стор.
...radiator — that is, the BTU which it gives off per square foot of surface per hour — depends ulx>n the difference in temperature between the steam in...lowpressure work. Taking the above results, we have 150 X 1 .7 = 255 BTU as the efficiency of an average cast-iron or pipe radiator. This, for convenient use,... | |
 | American School of Correspondence, Chicago, Charles Lincoln Hubbard - 1909 - 248 стор.
...Adapted, like the "Trombone." Only to a Single Wall. Frequently Used In Factories and Shops. K ll H 47 return end in order to secure proper drainage and...lowpressure work. Taking the above results, we have 150 X 1 .7 = 255 BTU as the efficiency of an average cast-iron or pipe radiator. This, for convenient use,... | |
 | Charles Lincoln Hubbard - 1909 - 268 стор.
...surrounding air, was found to average about 1.7 BTU The temperature of steam -at 2 pounds pressure is 220°, and 220 — 70 = 150, which may be taken as the average...1 to 2 inches in diameter will easily give off 300 BT U. under the same conditions, and a cast-iron wall radiator with ample space back of it should have... | |
 | 1909 - 500 стор.
...radiators, working under usual conditions, the heat given off per square foot of surface per hour for eacb degree difference in temperature between the steam...lowpressure work. Taking the above results, we have 150 X 1 .7 = 255 BTU as the efficiency of an average cast-iron or pipe radiator. This, for convenient use,... | |
 | 1909 - 444 стор.
...BTU The temperature of steam at 3 pounds' pressure is 220 degrees, and 220 — 70 = 150, which may he taken as the average difference between the temperature...lowpressure work. Taking the above results, we have 150 X 1 -7 = 255 BTU as the efficiency of an average cast-iron or pipe radiator. This, for convenient use,... | |
| |
BTU The temperature of steam at 3 pounds' pressure is 220 degrees, and 220 — 70 = 150, which may be taken as the average difference between the temperature of the steam and the air of the room, in ordinary lowpressure work. Taking the above results,... 
