Performance study of the rapid heating drying system based on the reverse Brayton air cycle for agricultural application

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2024-09-08 DOI:10.1016/j.applthermaleng.2024.124363

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Abstract

Air temperature and humidity control are important for crop storage. Current drying methods in agriculture include solar heating and air source heat pumps, whereas solar heating may lead to poor quality of the dried product and air source heat pumps may not reach the desired temperature when the environment is harsh. In this paper, a rapid heating and drying system based on reverse Brayton air circulation is proposed to obtain high temperature and low humidity air quickly by adjusting the pressure ratio to achieve an adjustable crop drying process. An improved rapid heating and drying system with a water cooler is also proposed to increase the drying efficiency of the system. The results show that the total dehumidification rate of the improved system can reach 11.51 g/s, which is 1.48 g/s higher than that of the rapid heating and drying system without a water cooler, and the dehumidification energy efficiency of the improved system can reach 1.26 kg/(kW^.h), which is 0.11 kg/(kW^.h) higher than that of the rapid heating and drying system without a water-cooling device.

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基于反向布雷顿空气循环的农业应用快速加热干燥系统的性能研究

空气温度和湿度控制对作物储存非常重要。目前农业中的干燥方法包括太阳能加热和空气源热泵，但太阳能加热可能导致干燥产品质量差，而空气源热泵在环境恶劣时可能达不到理想的温度。本文提出了一种基于反向布雷顿空气循环的快速加热干燥系统，通过调节压力比快速获得高温低湿空气，实现可调节的作物干燥过程。此外，还提出了一种带水冷却器的改进型快速加热干燥系统，以提高系统的干燥效率。结果表明，改进系统的总除湿率可达 11.51 g/s，比不带水冷装置的快速加热干燥系统高 1.48 g/s；改进系统的除湿能效可达 1.26 kg/（kW.h），比不带水冷装置的快速加热干燥系统高 0.11 kg/（kW.h）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.

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