HEAT CONSUMPTION AND HEAT UTILIZATION. 



511 



irpenter, R. C. A test of a process for utilizing waste heat from rotary 



cement-kilns. Sibley Journal of Engineering, March, 1904. 

 Helbig, A. B. The efficiency of waste-gas boilers in connection with rotary 



cement-kilns. Engineering News, vol. 53, pp. 163-166, Feb. 16, 1905. 

 Newberry, S. B. Fuel consumption in Portland-cement burning. Cement 



and Engineering News, July, 1901. 

 Richards, J. W. The thermal efficiency of a rotary cement-kiln. Cement, 



vol. 5, pp. 30-35, 1904. 



