In this experimental work, the investigation about impact of geometrical dispositions triangular obstacles on performance parameters such as pressure drop and thermal efficiency. A number input affects system. These are heat flux, mass flow rate ( = 0.01 to 0.02 kg/s), obstacles’ height, h from 22 mm 37.5 mm, their cross-stream wise pitch (Ly 56 206 mm), angle inclination with vertical plane (Θ...

Solar air heaters (SAHs) are used in a wide variety of household and industrial applications. Smooth absorber plate traditional solar duct has low value convective heat transfer coefficient. Enhancing the thermal efficiency SAHs can be achieved by using artificial roughness ribs placed on plate. However, this use results increasing pressure loss due to friction between airflow roughened surface...

Solar air heating is a solar thermal technology wherein the sun energy absorbed by an intermediate medium and utilized to heat air. In present paper, heater equipped with innovative arc shaped ribs considered. The transfer process in proposed evaluated numerically for Reynolds numbers between 6000 12000. influences of rib cross section type, inter-rib distance, aspect ratio pitch on efficiency ...

This article examines the issues of hydraulic resistance solar air heaters with concave tubes and reduction pressure losses, as well determination flow in installed working chamber heater discusses number common to reduce losses installation pipes give a swirling motion eliminate sharp decrease heat transfer process

Solar air heater acts as one of the important components in utilization solar energy. The absorbs irradiance and converts it into heat energy at absorbing surface. thermal is further use heating flowing through duct. heaters are cost effective well simple design. can be used space heating, timber seasoning agricultural drying. In spite all these advantages has certain challenges such low transf...