Combustion of wood pellets in a low-power multi-fuel automatically stoked heating boiler

IF 0.8 Q4 THERMODYNAMICS

Archives of Thermodynamics Pub Date : 2023-07-20 DOI:10.24425/ather.2022.140930

W. Zima

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引用次数: 1

Abstract

This paper presents a test stand equipped, among others, with two boilers intended for the combustion of solid fuels. The ﬁrst is a single-fuel boiler designed to burn wood pellets only. The second is a multi-fuel boiler intended for the combustion of mainly hard coal (basic fuel) with the grain size of 0.005–0.025 m. Wood pellets can also be ﬁred in this boiler, which in such a case are treated as a substitute fuel. There is a developed and veriﬁed algorithm for the control of the multi-fuel boiler operation in a wide range of loads for the basic fuel. However, for the substitute fuel (wood pellets) there are no documented and conﬁrmed results of such testing. The paper presents selected results of testing performed during the combustion of wood pellets in a multi-fuel automatically stoked boiler. Several measuring series were carried out, for which optimal operating conditions were indicated. These conditions may serve as the basis for the development of the boiler operation control algorithm. A detailed analysis was carried out of the ﬂue gas temperatures obtained at the outlet of the boiler combustion chamber and of the contents of carbon monoxide and oxygen in the boiler ﬂue gases.

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木屑颗粒在低功率多燃料自动加煤供暖锅炉中的燃烧

本文介绍了一个试验台，其中配备了两台用于燃烧固体燃料的锅炉。第一种是单燃料锅炉，设计用于仅燃烧木屑颗粒。第二种是多燃料锅炉，主要用于燃烧粒度为0.005–0.025 m的硬煤（基本燃料）。该锅炉中也可以制造木屑颗粒，在这种情况下，木屑颗粒被视为替代燃料。有一种经过开发和验证的算法，用于控制多种燃料锅炉在各种基本燃料负载下的运行。然而，对于替代燃料（木屑颗粒），没有此类测试的记录和确认结果。本文介绍了在多燃料自动加煤锅炉中燃烧木屑颗粒的试验结果。进行了几个系列的测量，指出了最佳操作条件。这些条件可以作为开发锅炉运行控制算法的基础。对锅炉燃烧室出口处的烟气温度以及锅炉烟气中一氧化碳和氧气的含量进行了详细分析。

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

Archives of Thermodynamics THERMODYNAMICS-

CiteScore

1.80

自引率

22.20%

发文量

期刊介绍： The aim of the Archives of Thermodynamics is to disseminate knowledge between scientists and engineers interested in thermodynamics and heat transfer and to provide a forum for original research conducted in Central and Eastern Europe, as well as all over the world. The journal encompass all aspect of the field, ranging from classical thermodynamics, through conduction heat transfer to thermodynamic aspects of multiphase flow. Both theoretical and applied contributions are welcome. Only original papers written in English are consider for publication.