The main aim of this study was to develop an integrated solar-tracking system maximize the efficiency solar heaters manufactured from recyclable aluminum cans (RAC) for optimum drying apple slices. results revealed that thermal air heater incorporated with a tracking unit significantly improved by about 45% compared conventional fixed at all tested flow rates. highest 87.1% equipped achieved ra...

In comparison to cocoa, little has been reported on the drying of cupuassu almonds that can be used produce cupulate, a chocolate type product. Thus, in this study thermophysical properties dry (moisture = 9.68 % d.b.) were determined as: thermal conductivity (k) 0.14 kW/(m.K), specific heat (cp) 2.86 kJ/(kg.K), diffusivity (?) 4.8·10-5 m²/s, effective (Deff) 9.94·10-10 - 6.29·10-10 m²/s and ac...

Perovskite semiconductors have emerged as competitive candidates for photovoltaic applications due to their exceptional optoelectronic properties. However, the impact of moisture instability on perovskite films is still a key challenge for perovskite devices. While substantial effort is focused on preventing moisture interaction during the fabrication process, it is demonstrated that low moistu...

The diffusion of moisture in woven glass fiber/epoxy resin composite is investigated theoretically and experimentally. Experiments are performed on a neat epoxy material glass-epoxy composites at three distinct temperatures. As expected, the temperature highly affected transport moisture. For data analysis, new homogenized model based geometry weave adopted. Assuming steady-state process Arrhen...

We propose and analyze a symmetric weighted interior penalty (SWIP) method to approximate in a Discontinuous Galerkin framework advection-diffusion equations with anisotropic and discontinuous diffusivity. The originality of the method consists in the use of diffusivity-dependent weighted averages to better cope with locally small diffusivity (or equivalently with locally high Péclet numbers) o...

We consider Discontinuous Galerkin approximations of advection-diffusion equations with anisotropic and discontinuous diffusivity, and propose the symmetric weighted interior penalty (SWIP) method for better coping with locally vanishing diffusivity. The analysis yields convergence results for the natural energy norm that are optimal (with respect to mesh-size) and robust (fully independent of ...

In this study, coriander leaves were subjected to three different drying techniques; direct sun, shade, and using an indirect solar dryer. the developed dryer, hot air obtained from a black-body collector was pushed by blower powered panel, sent chamber with multiple trays for thin-layer drying. Experiments conducted summer winter seasons, temperature relative humidity variations in measured da...

Different heat-moisture levels were applied to native starches from different cultivars of sweet potatoes available in Sri Lanka (Wariyapola red, Wariyapola white, Pallepola variety, Malaysian variety and CARI 273) to study the digestibility level. Samples were treated with 20, 25, and 30% moisture at 85°C and 120°C for 6 h and in vitro starch digestibility was tested with porcine pancreatin en...