A new developed dustfall collector has been investigated which collects airborne dust by sedimentation. The dustfall collector was placed at least 1.5 m above the floor. It was made of cardboard and the collecting surface was covered with aluminium foil; a chicken wire covered the box. After 140 days the dust was collected using the VacuMark sampler. Bioaerosols were sampled three times during ...

This study examined the potential for coal mine roof bolter dust to be a source of a worker’s exposure to respirable quartz. For the models of roof bolter studied, the dust from bolt hole drilling is collected by a dry vacuum exhaust system. The collected dust-laden air passes through a cyclone size-separator (pre-cleaner) and into a collector box containing two additional cyclones and a filter...

As the world shifts towards a more sustainable future, solar energy has emerged as preeminent and economically feasible alternative to traditional sources, gaining widespread adoption. This study presents reversed circular flow jet impingement (RCFJI) which aims improve performance of bifacial PVT collector. An indoor experiment using simulator assess energy, exergy, economic efficiency RCFJI T...

Solar air collectors have various applications: on the one hand, they can be used for air heating in cold seasons; on the other hand they can be used in summer to evacuate the warm and polluted air from residential, offices, industrial, and commercial buildings. The paper presents experimental results of a solar collector air, under the climatic conditions of the Southeastern Europe. The relati...

The performance of air-type PVT and BIPVT collectors has been extensively studied. As a system that generates heat power, collector testing some particularities especially when using air as recovery fluid building-integrated design (BIPVT). electrical thermal experimental such are currently being evaluated in-house methods or PV and/or solar standards. use wide range methods, conditions setups ...

This paper presents a comprehensive analysis of the energetic, economic and environmental performance micro-combined heat power (CHP) system that comprises 29.5 m2 hybrid photovoltaic-thermal (PVT) collectors, 1-kWe Stirling engine (SE) energy storage. First, model for solar micro-CHP system, which includes validated transient SE unit, is developed. Parametric analyses are performed throughout ...

Design and perform controlled numerical experiments with a realistic hurricane model (Wang 1998) and a coupled hurricane-ocean model to identify major processes determining baroclinic TC motion in the presence of convective heating and/or air-sea interaction. We develop, test, and apply a new diagnostic framework, the potential vorticity tendency (PVT) analysis, for quantifying contributions of...

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to increase agricultural crops’ quality and to minimize losses in the final product and used energy during the drying process, major drying system parameters should be continuously controlled. precise control of such parameters is attained by using automatic control systems. to optimize the overall dryer efficiency in a forced convective solar dryer, a controller was designed, constructed a...