Test of a small domestic boiler using different pellets

Dias, João; Costa, Mário; Azevedo, J. L. T.

doi:10.1016/j.biombioe.2003.07.002

Cited by 74 publications

(25 citation statements)

References 1 publication

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“…This result has been observed also by Carvalho et al (2013) and it could be due to the high concentrations of CO that inhibit NOx formation, as observed for OVP and Blend, or to the catalytic effect of char and ash (Garijo et al, 2003). On the other hand, according to Dias et al (2004), for highest concentration of N in the solid biofuel, the NOx emissions increase with the oxygen concentration in the flue gas (Table 4). But here, among the vineyard pellets, the smoke of CVP was the lowest in O2 (for vineyard pellet) but the more emissive in NOx.…”

Section: Emissions Characterisation: Physico-chemical Properties Of Tmentioning

confidence: 70%

Vineyard pruning residues pellets for use in domestic appliances: a quality assessment according to the EN ISO 17225

Zanetti¹,

Brandelet²,

Marini³

et al. 2017

J Agricult Engineer

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Nowadays many types of biomass are studied to satisfy the increased demand of renewable energy based on pellet combustion. However, only a few biomasses fulfil the high quality standard required for pellet used in domestic appliances. European and International standards in force define this quality of non-industrial use of pellets in term of the origin of biomass, physical, mechanical and chemical parameters. Vineyard residues are a worldwide potential source of energy but their compliance to be used in domestic pellet stoves has not been yet proven according to the new standards in force. In order to meet this need, this study makes an exhaustive characterisation of vineyard based pellets manufactured from residues of Prosecco (Glera variety) vineyards, assessing both the quality of biofuel and its behaviour during combustion in a domestic pellet stove. The quality of biofuel has been evaluated according to the in force standards for wood and non-woody pellets. The results show that vineyard pellets do not meet the type B quality standards required for non-industrial use of wood pellet mainly because of the high amount of ash content (>2%) and the high amount of copper (>10 ppm) but they fulfil the specifications of the type B non-woody pellets. Furthermore, during combustion test of vineyard-based pellet the high emission of CO indicates incomplete combustion; and vineyard-based pellet NOx emissions are more than double compared to those obtained during the control tests, confirming that the analysed vineyard-based pellets are unsuitable, as they are, for use in traditional pellet stoves.

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Section: Emissions Characterisation: Physico-chemical Properties Of Tmentioning

confidence: 70%

Vineyard pruning residues pellets for use in domestic appliances: a quality assessment according to the EN ISO 17225

Zanetti¹,

Brandelet²,

Marini³

et al. 2017

J Agricult Engineer

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show abstract

“…Chemical formation mechanisms for different pollutants as well as modeling methods are outlined. Tullin et al [3], Dias et al [4], Serrano et al [5] and Liu et al [6] did experimental research regarding carbon monoxide and nitrogen oxide emissions during wood-pellet and wood-chip combustion in small-scale boilers. They collectively concluded that air-staging can be a very effective method for emission reduction.…”

Section: Combustion Optimizationmentioning

confidence: 98%

Experimental investigation of the primary combustion zone during staged combustion of wood-chips in a commercial small-scale boiler

Buchmayr

Gruber²,

Hargassner³

et al. 2015

Biomass and Bioenergy

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“…Some studies have proven the validity of alternative sources with lower energy quality, including various agricultural residues such as apple pulp, red canary grass, waste pectin citrus peel, sunflower husk, wheat straw, bagasse, nutshell, hemp, salix, grass, tomatoes, chard and olive pits, among others [4][5][6]. Tests are normally conducted in small-scale commercial boilers [7,8] but occasionally in pilot plants or experimental prototype burners [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Viability of Low-Grade Biofuels in Small-Scale Appliances

et al. 2017

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Abstract:This experimental work aims to study the viability of making use of agricultural and forest residues as an alternative to produce biofuels for commercial devices. It focuses on the feasibility of three non-commercial biomass fuels in an underfed biomass pilot combustor with a power range of 7-12 kW th (500-800 kW/m 2 ). To carry out the investigation, the repeatability of the facility was studied using fuel with a high ash content. The relative deviations in the main parameters considered (combustion rate, gaseous emissions and particulate matter emissions) were below 10%. A feasibility analysis was performed by comparing the result obtained with a barley and leaf pellet with that obtained with a commercial wood pellet as a reference. The parameters used in this study were the operational parameters of the plant as well as the particle concentration and distribution, fouling and slagging. Comparing the results of the different fuels, it was determined that 25% leaf + 75% wood pellet (lp25) could be used as a commercial pellet with the incorporation of an additive. However, the two other fuels presented undesirable behavior characterized by high particle concentrations and notable amounts of slag.

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Test of a small domestic boiler using different pellets

Cited by 74 publications

References 1 publication

Vineyard pruning residues pellets for use in domestic appliances: a quality assessment according to the EN ISO 17225

Vineyard pruning residues pellets for use in domestic appliances: a quality assessment according to the EN ISO 17225

Experimental investigation of the primary combustion zone during staged combustion of wood-chips in a commercial small-scale boiler

Experimental Study of the Viability of Low-Grade Biofuels in Small-Scale Appliances

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