Page:Model steam turbines; how to design and build them (IA modelsteamturbin00harrrich).pdf/23

Rh unit time and the velocity attained by the working agent, whether it be a gas, as steam or compressed air, or a fluid such as water.

The extended development of the turbine in recent years has directed the attention of experimenters to

Fig. 8.

the at one time obscure subject of the velocity and outflow of steam through nozzles, and much valuable information is now available in the various technical journals

The following approximate method of treatment will, however, be sufficient for the purpose of designing model steam turbines. Let T (fig. 8). be a tank in which the water is kept