Energetic, Exergetic, and Exergoeconomic Analyses of Spray-Drying Process during White Cheese Powder Production
Articles > Article · 2012
Authors: Zafer ERBAY, Nurcan KOCA
Drying Technology, Journal Indexed in SCI Expanded, International, WoS, 2012, vol 30, pp 435-444
DOI: 10.1080/07373937.2011.647183
Summary
In this study, white cheese powder was produced using a pilot-scale spray dryer. Drying experiments were carried out with an inlet drying air temperature range of 160–230°C, an outlet drying air temperature range of 60–100°C, and an atomization pressure range of 294.2–588.4 kPa. The performance of the spray-drying process and the effects of process conditions on the process performance were evaluated using energetic, exergetic, and exergoeconomic analyses. The performance assessment was performed by using energy and exergy efficiencies, improvement potential () rate, total cost, and exergoeconomic factor terms. A comprehensive parametric study was conducted to investigate the effect of varying dead-state temperatures on exergetic and exergoeconomic performance parameters for the drying process. Correlations between the performance parameters and dead-state temperatures were developed. Exergetic efficiency values and rates were found to vary between 2.66 and 6.00% and 7.54 and 10.96 kW, respectively, and total costs and exergoeconomic factors were in the range 7.30–7.82 TL/h (Turkish lira per hour) and 76.09–81.93%, respectively.