INTERNATIONAL JOURNAL OF RESEARCH IN AERONAUTICAL AND MECHANICAL ENGINEERING Vol.2 Issue.3, March 2014. Pgs: 1-13 Paritosh Singh, Tukesh Thakur, Purnendra Sahu 1 ISSN (ONLINE): 2321-3051 INTERNATIONAL JOURNAL OF RESEARCH IN AERONAUTICAL AND MECHANICAL ENGINEERING A COMPARATIVE AND ANALYTICAL REVIEW OF IMPULSE AND REACTION TURBINE ON THE BASIS OF TYPE OF ACTION OF THE WATER ON THE BLADE Paritosh Singh 1 , Tukesh Thakur 2 , Purnendra Sahu 3 1 PG Scholar, Department of Mechanical Engineering 2 PG Scholar, Department of Mechanical Engineering 3 PG Scholar, Department of Mechanical Engineering MATS University, Raipur (C.G.) Abstract This paper deals with analytical review of impulse and reaction turbine on the basis of type of action of the water on the blade. The importance of mechanical drive steam turbine efficiency has been much highlighted in addition to its reliability. Some examples of modification of existing turbines for energy conservation and improving the efficiency are given. Keywords: impulse turbine, reaction turbine, efficiency. 1. Introduction In the case of impulse turbine all the potential energy is converted to kinetic energy in the nozzles. The impulse provided by the jets is used to turn the turbine wheel. The pressure inside the turbine is atmospheric. This type is found suitable when the available potential energy is high and the flow available is comparatively low. Some people call this type as tangential flow units. Later discussion will show under what conditions this type is chosen for operation. In reaction turbines the available potential energy is progressively converted in the turbines rotors and the reaction of the accelerating water causes the turning of the wheel. These are again divided into radial flow, mixed flow and axial flow machines. Radial flow machines are found suitable for moderate levels of potential energy and medium quantities of flow. The axial machines are suitable for low levels of potential energy and large flow rates. The potential energy available is generally denoted as “head available”. With this terminology plants are designated as “high head”, “medium head” and “low head” plants. Pelton wheel turbine is one of the famous turbines which are mostly used for the hydro plants. This is of impulse type and is used for high head, although the efficiency of such turbines are not so comparable with the reaction turbines, because most of the energy is wasted, due to the split-ting of water which is not being utilized and get wasted, due to this efficiency of the turbine is not so as the efficiency of other turbines like axial or reaction turbines. Related to the same context many modifications