Research Papers by G.N. Tiwari

The characteristic equation has been used for experimental results of a passive solar still to generate linear and non-linear characteristic equations for winter and summer conditions. The different angles of inclination of condensing cover (15°, 30°, 45°) have been chosen for winter and summer cond

In this paper, an attempt has been made to evaluate the internal heat transfer coefficient of single and double slope passive solar stills in summer as well as winter climatic conditions for three different water depths (0.01, 0.02 and 0.03 m) by various thermal models. The experimental validation o

This paper presents the parametric study of passive and active solar stills integrated with a flat plate collector based on the computer based thermal models. These models are developed based on mass and energy balance equations. The effect of inner and outer glass cover temperatures on the performa

An attempt has been made to evaluate inner and outer glass temperature and its effects on yield. Numerical computations have been performed for a typical day in the month of December, 2005, for the climatic condition of New Delhi (latitude: 28E35N N; longitude: 77E12N E and an altitude of 216 m abov

In this communication, an attempt has been made to find out the convective heat transfer coefficient for active solar distillation system. It is a well-known fact that the distillate output (the yield) decreases significantly with the increase of water depth in the basin of the solar still. It is al

The rate of distillate depends mainly on operating temperature, shape and material of the condensing cover. Further, it is important to study the behaviour of heat and mass transfer relations as a function of operating temperature, shape and material. For the present study two sizes of semi-cylindri