64 documents found, page 1 of 7

Evaluation of cogeneration alternative systems integrating biomass gasification...

Made available in DSpace on 2022-04-29T08:30:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-11-01; Suomen Akatemia; This work presents a technical analysis of an Integrated Biomass Direct Gasification/Gas Turbine (BIG-GT) technology within a sugarcane industry to produce electricity and thermal energy (process heat) using bagasse as fuel. Four possible configurations for the implementation of this te...

Downdraft gasifier Imbert type and clean-up system design, for small scale powe...

This paper presents a prototype of fuel gas generation system from biomass gasification. It comprises the small scale downdraft gasifier and the gas cleaning system aiming the generation of combustible gas (producer gas) suitable to run the internal combustion engine. This work is part of a project concerning the development of a compact power generation equipment, which aims the valorization of forest and rura...

Techno-economic analysis of forest biomass blends gasification for small-scale ...

The present work assesses the energetic valorisation of forest biomass blends in the archipelago of the Azores, to do so, a multiphase 2-D Eulerian-Eulerian model was employed to simulate forest biomass gasification in a pilotscale fluidized bed reactor. The numerical model was validated under experimental gasification runs performed in a 250 kWth quasi-industrial biomass gasifier. The potential use of the prod...

Extending MQTT-SN with Real-Time Communication Services

The Message Queuing Telemetry Transport (MQTT) protocol is one of the most popular application-layer protocols for machine-to-machine communications. Its popularity results from its simplicity and effective publisher/subscriber messaging model, which allows lightweight implementations able to run on resource constrained devices, thus making this protocol suitable for (Industrial) Internet of Things applications...

Instrumentation and visualization of a small-scale downdraft gasifier

Biomass gasification is a promising technology in the conversion of biomass into electricity, being considered the most efficient thermochemical process for such endeavor. However, some technical aspects remain unsolved and currently slow down its progress, such as the formation of tars in the gas stream. Accurate measurements of a gasifier's operational parameters are central to improve the process' performanc...

Small scale power generation unit using biomass gasification: the SUBe project

This paper presents a research and development project aiming to demonstrate the technical feasibility of using forest biomass for power generation using small scale systems. For this purpose, an experimental setup, suitable to be used as a distributed generation unit, has been developed. Then, key developments of this project rely on the design and development of the biomass gasifier prototype as well as on th...

Experimental and modeling analysis of brewers´ spent grains gasification in a d...

The first part of the current reported work presents experimental results of brewers’ spent grains gasification in a pilot-scale downdraft gasifier. The gasification procedure is assessed through various process characteristics such as gas yield, lower heating value, carbon conversion efficiency, and cold gas efficiency. Power production was varied from 3.0 to 5.0 kWh during the gasification experiments. The pr...

Comparative 2D and 3D analysis on the hydrodynamics behaviour during biomass ga...

Made available in DSpace on 2019-10-06T16:51:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-02-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Fundação para a Ciência e a Tecnologia; Federación Española de Enfermedades Raras; 2D and 3D simulations were carried out to predict the whole gasification process behaviour in a pilot-scale bubbling fluidized bed reactor. Special conc...

Improved numerical approaches to predict hydrodynamics in a pilot-scale bubblin...

A computational 2-D Eulerian-Eulerian approach was developed to simulate the hydrodynamics and heat transfer of a biomass gasification process in a pilot-scale bubbling fluidized bed reactor. The mathematical model was validated under experimental results collected from fluidization curves gathered at different temperatures in a pilot-scale reactor (75 kWth). Own user defined functions (UDFs) were developed in ...

CFD Models Applied to Gasification Improvement and Optimization