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This paper deals with the investigation of N identical compound parabolic concentrator evacuated tubular collector included single slope solar desalting unit (N‐CPC‐ETC‐SSU) by incorporating energy metrics for solving contemporary issue of water scarcity in the society. It will contribute to the sustainable development of society and recede the dependency on fossil fuels, too. The energy metrics investigation is important for energy system because it talks about the feasibility of the system. The methodology consists of getting fundamental equations from energy balance equations. All fundamental equations with relevant data are fed to the code developed in MATLAB followed by the computation of overall energy and exergy. All types of climatic situations have been considered for the analysis. Data required for the same are accessed from IMD, Pune, India. The energy payback period, energy production factor, and life cycle conversion efficiency for N‐CPC‐ETC‐SSU have been calculated at eight number of collectors, 0.012 mass flow rate and 0.14 m water depth. Results of N‐CPC‐ETC‐SSU have been compared with results of SSU included with ETCs. Concludingly, energy payback period is lower by 6.41%, energy production factor is higher by 6.25% and exergy‐based life cycle conversion efficiency is higher by 96.39% for N‐CPC‐ETC‐SSU than N‐ETC‐SSU. [ABSTRACT FROM AUTHOR]

This work presents a sensitivity analysis of double slope solar still having N similar compound parabolic concentrator integrated evacuated tubular collectors in series connection (NCPCETC-DS) by incorporating heat transfer coefficient, exergy gain and exergy efficiency using one-at-a-time method. The sensitivity investigation for collector has also been done. All expressions of various parameters have been fed to computational code developed in MATLAB - 2015a for May month of New Delhi climatic situation. Heat transfer coefficients, exergy gain and exergy efficiency values have been estimated for different cases in which one input variable is varied keeping other input parameters as constant and the computation is continued till the completion of estimation for all input parameters. The exergy gain for collector, exergy gain for NCPCETC-DS and exergy efficiency for NCPCETC-DS have been estimated to be most sensitive with regard to concentration ratio having mean sensitivity figure values as 1.88, 1.97 and 1.94 in that order. [ABSTRACT FROM AUTHOR]

Low temperature is the key to maintain the high quality for chilled food. The single jet air curtain is used for doorways opening insulation in the current circumstances is an idealization of the single jet air curtain used in the supermarket open refrigerated display cabinets. Open refrigerated display cabinets are going through some of the changes in their thermal behavior and of its overall performance due to variations in air conditions like air curtain temperature, velocity, height/width ratio, deflection module, specific cooling load, stability and thermal efficiency. A detailed experimental and comprehensive Artificial Neural Network Analysis of air conditions and energy transfer in an open refrigerated display cabinet is performed in this study. Numerical ANN predictions are 99.77% accurate and can be used to enable quick calculations and parametric analyses for the designing purposes of open refrigeration equipment that reduce the thermal infiltration of the Open Refrigerated Display Cabinet and increase the food safety. [ABSTRACT FROM AUTHOR]