Evaluation of the performance of a multi-fuel domestic boiler with respect to the existing European standard and quality labels: Part-1

Verma, Vijay; Bram, Svend; Gauthier, Guillaume; Ruyck, Jacques De

doi:10.1016/j.biombioe.2010.08.028

Cited by 76 publications

(38 citation statements)

References 27 publications

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“…NO x emissions from wood were somewhat higher but in the same range as those reported recently Verma et al, (2011a;2011b). However, NO x emissions from the combustion of all cereal grains at 15% moisture were all considerably higher than NO x emissions from wood pellet combustion but also higher than NO x emissions from the combustion of cereal straw pellets reported recently by Verma et al, (2011a and2011b). NO x emissions were similar to levels reported previously for cereal grains by Hartmann et al, (2008).…”

Section: Efficiency Emissions and Clinker Formationsupporting

confidence: 87%

Cereal grain combustion in domestic boilers

Keppel

Finnan

Rice

et al. 2013

Biosystems Engineering

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This study compared the combustion characteristics and the combustion behaviour of oats, barley, triticale and wheat to that of wood pellets. Sustained grain combustion in domestic boilers was feasible but problematic, the main impediment being clinker formation with ash agglomeration. Clinker formation was lowest for oats which burned easily with fewer operational problems. Triticale displayed reasonably good combustion characteristics and also ignited easily. In contrast, barley and wheat proved difficult to ignite while barley combustion was prone to self-extinguish. Thermal and combustion efficiency and heat output were considerably higher at a grain moisture content of 15% compared to a moisture content of 20%. The efficiency of oat combustion was similar to that of wood pellets at a moisture content of 15%. Carbon monoxide (CO) emission from cereal grains increased with increasing moisture content, but was still below limit values. Oxides of nitrogen (NO x ) emissions from cereal combustion were high and would require reduction by limiting the quantity of nitrogen applied to the crop and/or the use of air staging. Oats proved superior to the other grains as a combustion feedstock with similar efficiencies to those of wood pellets but low moisture content is a prerequisite for efficient grain combustion.

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Section: Efficiency Emissions and Clinker Formationsupporting

confidence: 87%

Cereal grain combustion in domestic boilers

Keppel

Finnan

Rice

et al. 2013

Biosystems Engineering

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“…Some predictions into the behavior of the fuel are made based on these results [6,10]. If the fuels are tested in an actual combustor, pollutant emissions are recorded and verified to meet standards [4] for either gaseous or solid particle emissions. This last parameter becomes a key factor, and concentrations can reach up to 650 mg/Nm 3 [4].…”

Section: Introductionmentioning

confidence: 99%

“…The majority of commercial pellets are made of wood, and it is useful to search for new raw materials for the production of pellets. 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%

“…If the fuels are tested in an actual combustor, pollutant emissions are recorded and verified to meet standards [4] for either gaseous or solid particle emissions. This last parameter becomes a key factor, and concentrations can reach up to 650 mg/Nm 3 [4]. The mechanical/physical properties of raw input fuel materials are also important in the design of engineering constructions that are necessary for treatment and storage of the materials.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Furthermore, Dias et al [41] and González et al [26] studied the behavior of domestic boilers and analyzed the emissions generated from the combustion process. In light of this, Verma et al [42] and Verma et al [43] carried out a comparative study of the efficiency of different equipment in the frame of technical specifications. Persson et al [44] developed several mathematical models to describe the performance of different types of boilers.…”

Section: Methodsmentioning

confidence: 99%

Pellet as a Technological Nutrient within the Circular Economy Model: Comparative Analysis of Combustion Efficiency and CO and NOx Emissions for Pellets from Olive and Almond Trees

2016

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This study analyzes the operation of Biomass System (BIO System) technology for the combustion of pellets from almond and olive trees within the circular economy model. Its aims are the reduction of greenhouse gas emissions as well as waste removal and its energy use by reintroducing that waste into the production process as technological nutrient. In order to do so, combustion efficiency under optimal conditions at nominal power was analyzed. In addition, a TESTO 350-XL analyzer was employed to measure CO and NO x emissions. High combustion efficiency values were obtained, 87.7% and 86.3%, for pellets from olive tree and almond tree, respectively. The results of CO and NO x emission levels were very satisfactory. Under conditions close to nominal power, CO emission levels were 225.3 ppm at 6% O 2 for pellet from almond tree and 351.6 ppm at 6% O 2 for pellet from olive tree. Regarding NO x emissions, the values were 365.8 ppm at 6% O 2 and 333.2 ppm at 6% O 2 for pellets from almond tree and olive tree, respectively. In general, these values were below those legally established by current legislation in European countries. Therefore, BIO System technology is a perfectly feasible option in terms of energy use and circular economy.

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Evaluation of the performance of a multi-fuel domestic boiler with respect to the existing European standard and quality labels: Part-1

Cited by 76 publications

References 27 publications

Cereal grain combustion in domestic boilers

Cereal grain combustion in domestic boilers

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

Pellet as a Technological Nutrient within the Circular Economy Model: Comparative Analysis of Combustion Efficiency and CO and NOx Emissions for Pellets from Olive and Almond Trees

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