Because of the low value convective heat transfer coefficient between absorber plate and air, thermal efficiency a solar air heater is greatly reduced, resulting in high temperatures large losses to surrounding environment. The analysis transmission presented this research, which makes use Computational Fluid Dynamics. An investigation conducted into effect Reynolds number on Nusselt friction f...

this work presents the heat transfer characteristics of a new type of porous radiant air heater that operates on the basis of effective energy conversion method between flowing gas enthalpy and thermal radiation. at each layer, the gas and solid phases are considered in non-local thermal equilibrium, and combustion in the porous radiant burner is modeled by considering a non-uniform heat genera...

This communication discusses the energy, exergy, and economic feasibility of novel heat storage based on a single-slope solar still coupled with air heater (SAH). The analysis was conducted three different stills, i.e., (SSSS), latent storage, heater. performance evaluation all types has been compared to evaluate best-performing still. Paraffin wax as phase change material (PCM) used at bottom ...

Based on an effective energy conversion method between gas enthalpy and thermal radiation, a multi-layered type of porous air heater has been proposed. In the five layered structure which is analyzed in this work, there are five porous layers which are separated by four quartz glass windows. The main layer operates as a porous radiant burner that products a large amount of thermal radiative ene...

This paper describes the development and experimental validation of a multi-layer hybrid controller for optimizing energy management in a solar air conditioning plant. The hybrid nature of the process is due to its multi-mode structure: the refrigeration circuit can be fed by flat solar collectors, a storage system, by an auxiliary gas heater, or by a combination of them. The selection of the o...

A box-type solar heater was designed, constructed, and used to determine the effect of solar heating on quality of domestic roof-harvested rainwater (DRHRW). During testing, naturally contaminated DRHRW was harvested in Ibadan, Nigeria, and released into the system at 93.96 Lh(-1) (2.61 × 10(-5) m(3) s(-1)) in a continuous flow process. Water temperatures at inlet, within the heating chamber, a...