Design and Characterizations of Solar Steam Engine
In this paper a conceptual design of solar steam dish concentrated ( 2 m ) area was used .With cylindrical receiver as a solar boiler and two axis tracking system .the experimental were conductance from 80-150 °C under a mean solar flux of (250 -780 W/m) concentration product analysis of this innovative solar boiler applied drive to steam engine. We have found that overall efficiency of the conversion from direct solar irradiation energy to
Fabricated of Vertical Axis wind turbine (VAWT) and study the parameter
transmission lines and high prices of conventional fuel due to high pollution. A vertical system is used which depends on wind energy used to rotate a vertical turbine. The system is manufactured from local materials and tested. and study the number of blades with the other characterization of system we found, increasing the torque with increasing the blade of turbine, and increasing the power coefficient with increasing the tip speed ratio and low bitz limit.
Laminar heat or mass transfer in rectangular channels and in cylindrical tubes for fully developed flow: comparison of solutions obtained for various boundary conditions
Abstract A comparison is made of results obtained with various boundary conditions at the wall of the channels. By comparing blood Sherwood numbers for finite wall resistance with those for constant concentration boundary condition only a small variation is found for various points along the blood channel.