Loss of Heat from Covered Steam Pipes 1 1 



Name of 

 Covering. 



Asbesto- Sponge 

 Felted 

 Do. 

 Magnesia 



Do. 



Asbestos Navy Brand -2" 

 Do. 



The covering was measured before being applied to the pipes. 

 The temperature of the steam is that corresponding to the 

 pressure observed by a gauge. 



In view of the fact that each figure in this table is an aver- 

 age of a number of tests, and considering the length of the test 

 pipes and the care with which the experiments were made, we 

 may confidently assert that having determined the value of C 

 from an experiment with a given covering we may therefrom 

 compute the loss of heat from any sized pipe with any thickness 

 of covering, provided the steam pressure is the same as that 

 obtaining during the experiment. 



JACOBUS' TESTS. 



An account of these tests by Professor Jacobus is to be found 

 in the STEVENS INSTITUTE INDICATOR for July, 1901. 



The steam pressure was from 55 to 75 pounds. 



The tests pipes were standard 2 -inch pipes, 12 feet long. 



The tests were about four hours long, but the figures here 



