提高旋转干燥机的效率:调整吹风机转速以获得最佳的温度稳定性,用于咖啡豆干燥
Ika Noer Syamsiana1, Nihayatun Nafisah2, Arwin Datumaya Wahyudi Suma1,3
1Department of Electrical Engineering, State Polytechnic of Malang, Malang 65141, Indonesia.
MethodsX
|July 18, 2025
概括
旋转干燥机中的迷糊逻辑控制 (FLC) 精确调节咖啡豆干燥温度,提高效率并保持咖啡豆质量. 这种自动化系统确保最佳的水分含量,并保持酸度和抗氧化剂,无论批量大小.
科学领域:
- 农业工程 农业工程
- 食品科学与技术 食品科学与技术
- 控制系统工程 控制系统工程
背景情况:
- 咖啡豆干燥对于质量保存和保质期至关重要.
- 传统的干燥方法往往遭受不一致的温度控制,影响豆质量.
- 模糊逻辑控制 (FLC) 为农业加工中精确温度调节提供了一个潜在的解决方案.
研究的目的:
- 评估一台旋转咖啡豆干燥机中用于温度和空气速度调节的模糊逻辑控制 (FLC) 系统的有效性.
- 评估FLC控制的干燥参数对咖啡豆质量的影响,包括含水量,酸度和抗氧化剂水平.
- 使用FLC系统确定各种咖啡豆质量的最佳干燥条件.
主要方法:
- 开发FLC系统,以动态调节吹风机转速,以精确控制温度 (设置点60°C).
- 实施稳定热空气分配以尽量减少温度偏差和控制相对湿度.
- 在不同时间和质量条件下干燥后,对咖啡豆进行重度水含量,酸度和抗氧化剂水平的实验室分析.
主要成果:
- FLC系统保持了干燥温度,误差低于设定值的0.17%和2%以上.
- 通过不同的干燥时间和质量,在12.5%以下 (SNI 01-2907-2008) 达到最佳咖啡豆水分含量.
- 干燥270分钟 (1公斤) 的咖啡豆含水量为11.28%,330分钟 (2公斤) 的咖啡豆含水量为9.92%,450分钟 (3公斤) 的咖啡豆含水量为10.92%.
- 在所有实验条件下,酸度和抗氧化剂水平保持在最佳水平.
结论:
- 模糊逻辑控制显著提高了旋转咖啡豆干燥的效率和精度.
- FLC系统有效地保留了咖啡豆的质量属性,包括水分,酸度和抗氧化剂.
- 这项技术证明了其适用于高质量的咖啡加工,可适应不同批量大小.
更多相关视频
相关概念视频
01:19Mechanism of heat transfer
1.4K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.4K
02:44Heating and Cooling Curves
24.0K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
24.0K
01:21Drying Shrinkage
156
When hardened concrete is exposed to air with a relative humidity of less than 100 percent, it begins to lose the free water within its capillaries. As this water evaporates, the water initially adsorbed onto the calcium silicate hydrates migrates towards these now empty spaces and eventually evaporates as well. Over time, as more water leaves, the volume of the concrete decreases, a phenomenon known as drying shrinkage.
A portion of this drying shrinkage can be reversed; if the concrete is...
A portion of this drying shrinkage can be reversed; if the concrete is...
156
01:11Temperature and Thermal Equilibrium
7.2K
Heat and temperature are essential concepts for everyone every day. The study of heat and temperature is part of an area of physics known as thermodynamics. It is not always easy to distinguish heat and temperature.
The concept of temperature has evolved from the common concepts of hot and cold. The scientific definition of temperature explains more than just our sense of hot and cold. Temperature is operationally defined as the quantity measured with a thermometer. Furthermore, temperature is...
The concept of temperature has evolved from the common concepts of hot and cold. The scientific definition of temperature explains more than just our sense of hot and cold. Temperature is operationally defined as the quantity measured with a thermometer. Furthermore, temperature is...
7.2K
01:14Mechanisms of Heat Transfer
514
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
514
01:14Mechanical Efficiency of Real Machines
868
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
However, in reality, no machine can be truly ideal, and all of them experience some...
868