Cost-Effective Monitoring of the Fuel Air Equivalence-Ratio with a Lambda Sensor and a Microcontroller in a Downdraft Biomass Gasifier  

作　　者：Jean Fidele Nzihou Salou Hamidou Ousmane Zoundi Frederic Ouattara Bila Gerard Segda Jean Fidele Nzihou;Salou Hamidou;Ousmane Zoundi;Frederic Ouattara;Bila Gerard Segda(Formation and Research Unit in Sciences and Technologies, University Norbert ZONGO, Koudougou, Burkina-Faso)

机构地区：[1]Formation and Research Unit in Sciences and Technologies, University Norbert ZONGO, Koudougou, Burkina-Faso

出　　处：《Open Journal of Applied Sciences》2024年第2期545-560,共16页应用科学（英文）

摘　　要：The operation of biomass treatment devices such as gasifiers is based on the control of key parameters that play an important role in product formation. These include: temperature, excess oxygen, relative humidity and biomass composition. This work focuses on excess oxygen and temperature. Unfortunately, flue gas oxygen analyzers are expensive and not accessible to small industries. However, the equivalence ratio is linked to excess oxygen and has the advantage of not depending on biomass composition. This study therefore focuses on the design and development of a device for controlling this equivalence ratio by measuring oxygen concentration using a self-propelled Lambda probe, and a system for monitoring this equivalence ratio using an Arduino Uno 3 microcontroller. The temperature is recorded with an accuracy of ±1.5°C. For a heating time of 10 minutes, the response time to temperature change is around 3 seconds, which is sufficient for the device to function properly. This simple device is an efficient and cost-effective means of checking the equivalence ratio.The operation of biomass treatment devices such as gasifiers is based on the control of key parameters that play an important role in product formation. These include: temperature, excess oxygen, relative humidity and biomass composition. This work focuses on excess oxygen and temperature. Unfortunately, flue gas oxygen analyzers are expensive and not accessible to small industries. However, the equivalence ratio is linked to excess oxygen and has the advantage of not depending on biomass composition. This study therefore focuses on the design and development of a device for controlling this equivalence ratio by measuring oxygen concentration using a self-propelled Lambda probe, and a system for monitoring this equivalence ratio using an Arduino Uno 3 microcontroller. The temperature is recorded with an accuracy of ±1.5°C. For a heating time of 10 minutes, the response time to temperature change is around 3 seconds, which is sufficient for the device to function properly. This simple device is an efficient and cost-effective means of checking the equivalence ratio.

关 键 词：Equivalence Ratio Biomass GASIFICATION Lambda Sensor MICROCONTROLLER C++ 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]