Performance of Exergetic, Energetic and Techno-Economic Analyses on a Gas-Type Industrial Drying System of Black Tea

Zeng, Zhiheng; Li, Bin; Han, Chongyang; Wu, Wenwang; Chen, Tianci; Dong, Chengju; Gao, Changlun; He, Zhaokai; Zhang, Fangren

doi:10.3390/foods11203281

Cited by 7 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the high-salt environment possesses oxidative properties that accelerate lipid oxidation in aquatic products, resulting in the generation of a significant amount of cholesterol oxidation products. This, in turn, affects the oxidative stability of aquatic products, leading to a decline in product quality and a shortened shelf life [13][14][15][16][17][18][19][20]. In a study by Yu et al [21], using Pacific saury as the material, changes in the physicochemical characteristics during the salting process were analyzed and determined.…”

Section: Traditional Preprocessing Techniquesmentioning

confidence: 99%

Recent Advances in Drying Processing Technologies for Aquatic Products

Wu,

Li,

Chen

et al. 2024

Processes

Self Cite

View full text Add to dashboard Cite

Fresh aquatic products, due to their high water activity, are susceptible to microbial contamination and spoilage, resulting in a short shelf life. Drying is a commonly used method to extend the shelf life of these products by reducing the moisture content, inhibiting microbial growth, and slowing down enzymatic and chemical reactions. However, the drying process of aquatic products involves chemical reactions such as oxidation and hydrolysis, which pose challenges in obtaining high-quality dried products. This paper provides a comprehensive review of drying processing techniques for aquatic products, including drying preprocessing, drying technologies, and non-destructive monitoring techniques, and discusses their advantages and challenges. Furthermore, the impact of the drying process on the quality attributes of dried products, including sensory quality, nutritional components, and microbial aspects, is analyzed. Finally, the challenges faced by drying processing techniques for aquatic products are identified, and future research prospects are outlined, aiming to further advance research and innovation in this field.

show abstract

Section: Traditional Preprocessing Techniquesmentioning

confidence: 99%

Recent Advances in Drying Processing Technologies for Aquatic Products

Wu,

Li,

Chen

et al. 2024

Processes

Self Cite

View full text Add to dashboard Cite

show abstract

“…The authors emphasized the potential of exergy analysis in reducing energy consumption in similar processes. Zeng et al (2022) applied an energy and exergy method to evaluate the energetic and exergetic performance of a gas-type industrial drying system of black tea. They found that the exhaust air heat loss had a major synergetic role in the exergy loss of the whole dryer unit.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive assessment of energetic and exergetic performance for the dehumidification system of a processed pistachio production unit

Dowlati,

Golpour,

Blanco‐Marigorta

et al. 2023

J Food Process Engineering

View full text Add to dashboard Cite

The present study aims to conduct a comprehensive evaluation of the energetic and exergetic performance of a dehumidification system utilized in the processing of raw pistachios. The assessment involved the application of the first and second laws of thermodynamics to calculate the exergy aspects of each component of the system, including input and output exergy rates, output/input exergy efficiency, product/fuel exergy efficiency, exergy destruction rate, exergy loss rate, exergy improvement potential rate, and specific exergy consumption. Furthermore, the effect of variations in reference state temperature on the exergy parameters was also investigated. The results indicated that the pre‐dryer chamber had the highest input exergy rate among all the components of the dehumidification system. The product/fuel exergy efficiency is specified to be 35.10%, 9.47%, and 60.43%, for the electro‐fan, heater, and pre‐dryer chamber, respectively, while their output/input exergy efficiency are 87.87%, 22.10%, and 56.28%, respectively. The values of the exergy destruction rate of these components are 0.83, 147.14, and 1.12 kW whereas the exergy loss rate values are found to be 0.03, 4.12, and 9.24 kW, respectively. The improvement potential rate values of these components are obtained to be 0.10, 117.83, and 4.53 kW, while the amount of specific exergy consumption for the dehumidification system is determined as 481.85 kJ/kg. The study also reveals that the exergy parameters vary with changes in reference state temperature and that the exergy efficiencies decrease linearly as reference state temperature rises. Therefore, the findings of this investigation demonstrate the potential for using exergy analysis as an effective tool to improve the performance of dehumidification systems in industrial settings, specifically in the production of pistachios.Practical applicationsPistachio nut known as green gold because of its high economical value, is one of the popular nuts over the world. Dehumidification system based on drying technology could be used in food industry with many distinct advantages for processing of particulate crops like pistachios. For a comprehensive assessment of this system, analysis of the first and second laws of thermodynamics is applied. Exergy aspect based on the thermodynamic analysis the is an important stage for designing, modeling, optimizing, and performance assessment of the dehumidification system to produce processed pistachio. The results of this study show that the performance of dehumidification system could be improved by incorporating a steam compressor, a secondary heat exchanger, self‐heat recuperation technology, and a pinch method. It is believed that such a study would contribute to the industrial exploitation of pistachio which can provide insight into decreasing energy consumption and reducing capital costs for engineers and factory owners.

show abstract

“…Lin, J et al [23] studied the gas-solid coupling of an aggregate gas dryer by using the computational fluid dynamics-discrete element method (CFD-DEM) coupling method, which effectively improved the heat exchange efficiency between flue gas and aggregate. Zeng, Z et al [24] analyzed the exergy performance, energy, and technical economy of the gas dryer, and the research results showed that the loss of high-temperature flue gas generated by gas combustion restricted the drying efficiency of the gas dryer.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Numerical Simulation of Gas Dryer Structure Improvement

Yang,

Wang,

et al. 2023

Energies

View full text Add to dashboard Cite

The dryer is an important part of the paper drying process, and the uniformity of the dryer wall temperature distribution has an important influence on paper production quality and efficiency. In this paper, improving the temperature uniformity of the traditional gas dryer wall is taken as the research goal, and the distribution trend and uniformity of the traditional gas dryer wall temperature are studied and analyzed, and the structural improvement plan is put forward. On the basis of this, in order to further improve the uniformity of the wall temperature of the improved gas dryer, the optimization scheme of applying endothermic coating in the low-temperature area of the inner wall of the dryer is proposed. The numerical simulation and experimental research methods are used to compare and analyze the temperature uniformity of the wall of the improved gas dryer. The results show that the axial uniformity of the wall temperature of the modified gas dryer is significantly improved. Compared with the traditional gas dryer, the temperature difference of the cylinder wall is reduced from 40 °C to 13 °C, the maximum axial temperature difference of the cylinder wall is reduced by 57%, and the temperature uniformity is increased from 66.7% to 89.6%. Compared with the improved gas dryer, after the endothermic coating is applied to the low-temperature area of the inner wall of the dryer, the temperature difference of the cylinder wall is reduced from 13 °C to 7 °C, the maximum axial temperature difference of the cylinder wall is further reduced by 46%, and the temperature uniformity is increased from 89.6% to 94.4%.

show abstract

Performance of Exergetic, Energetic and Techno-Economic Analyses on a Gas-Type Industrial Drying System of Black Tea

Cited by 7 publications

References 50 publications

Recent Advances in Drying Processing Technologies for Aquatic Products

Recent Advances in Drying Processing Technologies for Aquatic Products

A comprehensive assessment of energetic and exergetic performance for the dehumidification system of a processed pistachio production unit

Experimental Study and Numerical Simulation of Gas Dryer Structure Improvement

Contact Info

Product

Resources

About