Design and standardization of temperature measurement system for biomass downdraft gasiger

Abstract

The process of converting biomass into energy is known as Biomass conversion. This energy is used to generate electricity and heat. Direct-fired and gasification systems are the main principal categories of biomass conversion technology for power and heat production. The temperature in a biomass gasifier plays vital role to produce high calorific value producer gas. Temperature can be properly measured without error and then it can be monitored and controlled by any controller. In this work various experimental studies were carried out on temperature variations with change in air flow rate. To measure a temperature profile inside gasifier, Chromel-Alumel type K thermocouples with a signal-conditioning device was chosen. Drying zone, pyrolysis zone, oxidation zone and reduction zone are the four thermocouples that are used for different zones. Secondary air flow rate is kept constant in 50 LPM, by varying primary flow rate 50LPM, 70LPM, 90LPM, 110LPM, 130LPM, 150LPM. The main aim is to develop a downdraft gasifier system with a fully-equipped instrumentation system to investigate gasification performance using different biomass feedstock. For stipulate a better performance than the existing system, the designed temperature measuring system is implemented and compared with the existing system.