Comparative analyses of experimental and simulated performance of a mixed-mode solar dryer

Abstract

Agricultural produce upon harvesting have high moisture content which makes it unsafe for storage as the moisture in the crops attracts microorganisms which result in deterioration of the products. A solar dryer was developed, simulated and tested under the weather conditions of Zaria, Nigeria. TRANSYS 16.0 software was used to simulate the collectors’ outlet air temperature. A MATLAB code was written to compute the weight losses of yam slices present in a drying chamber. The computed Nash-Sutcliffe Coefficient of Efficiency values and its corresponding root means square errors between the modelled collector air temperature, and the experimental collector air temperatures confirm the validity of TRANSYS 16 model owing to the good quality of fit between the experimental and the simulated results. Similarly, the computed Nash-Sutcliffe Coefficient of Efficiency values and its corresponding root means square errors between the modelled weight loss of yam slices, and the observed weight loss of yam slices follows the same trend.

Optimization of Transducer Location for Novel Non-Intrusive Methodologies of Diagnosis in Diesel Engines

“…It can be seen that contributions of combustion process towards noise emissions occurs at wider frequency bands when compared with cylinder pressure PSD plots. This may be due to several non-linear paths of noise propagation through engine as discussed in [7][8][9][10][11][12][13][14][15][16][17]. Noise PSD plots were characterized by high frequency components that may be due to several other contributing sources.…”

“…Among the advanced techniques, monitoring of noise and vibration emissions from engines, are important benchmarks for various choice of customers [11][12][13][14][15][16][17][18][19][20][21]. Various diagnosis methodologies adopted in case of diesel engines for their condition monitoring includes:…”

A review of vibro-acoustic techniques for control of combustion engine noise

“…Clearance optimization of, application of crank shaft damper and flexible flywheel design may be used to control this sour of noise. G. Belt and chain noise-Meshing impact and polygon effect depends on tension, speed and number of meshing teeth [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Thermodynamic Analysis and Calculation of the Drying and Heating System of Automatic Stirring Equipment

“…In this context, how to effectively reduce the power consumption of automatic stirring equipment is an issue requiring the attention from the construction machinery industry [12][13][14][15]. The function of DHS is to heat and dry the cold materials, it is the core component of automatic stirring equipment, and analyzing its thermodynamics is a necessity for improving the heating and drying efficiency of the drying drum and reducing its energy consumption; it is the key to increase the efficiency of the automatic stirring equipment [16][17][18][19][20][21][22][23].…”