The optimum flow channel depth and mass flow rate in 10 different designs of solar air heaters have been obtained. The design variations considered are flat absorber type with and without cover glazings; single, double and triple pass etc. It is found that there exists an optimum mass flow rate...

The calculation of solar radiation received at a particular place and at a particular time, involves many factors like rotation and revolution of the earth, atmospheric attenuations, atmospheric conditions, time of day and year, geographic location of place, and site location of collector, tilt...

Development and dissemination of efficient and economic techniques of harnessing new and renewable sources of energy to bridge the ever increasing gap between the energy demand and supply in developing countries is a formidable challenge for their governments. Availability of educated and...

A detailed theoretical parametric analysis of a corrugated solar air heater with and without cover has been presented. The optimum flow channel depth, at which the maximum heat is available at the lowest collector cost, has been obtained. The effect of collector parameters and operating...

The performance prediction of Solar Integrated Collector-Storage system(ICS) is determined in terms of three generalised non-dimensional grouped parameters using transient one-dimensional analysis. These non-dimensional parameters are primarily a combination of physical characteristics...

We have developed the theory of a matrix air heater with a rear plate, investigated the role of individual components, and studied the performance differences for air flowing downwards and air flowing upwards through the matrix. The system is compared with an air heater of conventional design...

We have investigated a fin-type air heater, both experimentally and theoretically. In the experimental set-up, the fins are integrated with the upper plate of the conventional duct-type air heater with single glazing. The experiments were performed on two clear days for two different mass-flow...

We have investigated the performance of a solar water heater with collector and baffle plate for six continuous days during the summer and winter seasons. The following cases were studied: 1.(i) no flow,2.(ii) constant water flow rates,3.(iii) intermittent flow to meet requirements of hot water,...

A theoretical investigation for optimizing collector-cost effectiveness is carried out by considering various tube diameters, materials, tube spacing, fin materials, and thicknesses for black and other paints. The bond conductance is taken into account for various joining techniques. Various...

This paper deals with efforts to improve the performance of conventional, duct- type air heaters by providing rectangular fins in the air passage between the absorber and the rear plate. For this configuration, a mathematical model is developed by writing the energy balance equations at various...