Solar heat utilization for adsorption cooling device

Pilát, Peter; Patsch, Marek; Malcho, Milan

doi:10.1051/epjconf/20122501074

Cited by 9 publications

(5 citation statements)

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“…Given the results of previous experiments work [4] has gone calcium oxide as the most suitable additive to increase the ash melting temperature of wheat straw. This is given by change of chemical composition of the wheat straw ash which changes the eutectic temperature (Fig.…”

Section: Experiments Methodology Used Additivementioning

confidence: 99%

“…2). It is also visible in one of methods for prediction of ash fusion temperature which use ternary phase diagram K2O-CaO-SiO2 [4]. It is a Gibbs triangle with the help of which properties of systems composed of three components are investigated.…”

Section: Experiments Methodology Used Additivementioning

confidence: 99%

“…One of these is ash from biofuel which may cause various problems during combustion processes in heating devices [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…It is composed of minerals that are present in the fuel. In published works [4,7,8] it was found out that silicon, aluminum and iron reach the highest concentration of diversity to make up the ash biomass. Chemically, the ash from biomass is mainly composed of a mixture of oxides of inorganic elements K2O, Na2O, CaO, MgO, Fe2O3, Al2O3, SiO2, P2O5.…”

Section: Introductionmentioning

confidence: 99%

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Additives application to wheat straw to increasing the ash fusion temperature

Holubčík¹,

Jandačka²,

Palacka³

et al. 2016

AIP Conference Proceedings

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Abstract. Biofuels are more and more popular energy source and they are used in more households in the Eastern Europe region. Straw from the agriculture crops is promising and significant biomass source of energy but now it is at least energy utilized. In terms of straw burning is the most important feature of its quick and easy volatilization. Another property, which is negative, is its low ash fusion temperature. The straw ash begin soften at about 830 °C. However, at the temperature 850 °C to 900 °C the ash transform to glass slags and sinters which damage the refractory of the furnace and it is also difficult to remove. The paper deals about the option for reducing the problems of low ash fusion temperature by additives application. The presented results are from the lime application in the laboratory conditions and in the real conditions, in the heat source with the nominal thermal power 2 MW. The results of the experiments showed that the results from the real operation does not correspond with laboratory results.

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Section: Experiments Methodology Used Additivementioning

confidence: 99%

Section: Experiments Methodology Used Additivementioning

confidence: 99%

“…One of these is ash from biofuel which may cause various problems during combustion processes in heating devices [4,5].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Additives application to wheat straw to increasing the ash fusion temperature

Holubčík¹,

Jandačka²,

Palacka³

et al. 2016

AIP Conference Proceedings

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show abstract

“…Biomass consists of combustible substance, ash and water [5]. Combustible substance is the part of fuel which releases heat by oxidation, i.e., energy is chemically bound in fuel [6]. Ballast of fuel consisting of ash and water is an undesirable proportion of the fuel [7].…”

Section: Ash Related Problems During Biomass Combustionmentioning

confidence: 99%

Mathematical Model for Prediction of Biomass Ash Melting Temperature using Additives

Holubčík¹,

Jandačka²

2014

Komunikácie

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Some types of biomass ash have low ash melting temperature which can result in various problems in combustion processes. Ash slags and sinters can avoid heat transfer in heat exchangers, which can also cause corrosion of heat transfer surfaces. One of the ways of burning fuels with low ash melting temperature is to use additives. Ash melting temperature can be determined in a laboratory on the basis of standard STN ISO 540. Meltability of ash is characterized by the physical state of ash occurring during the heating process under well-defined conditions in the furnace. Experimental determination of ash melting temperature is quite expensive. In this work a prediction method of ash melting temperature is described. The mathematical model uses multiple linear regression where input parameters are the known chemical composition of fuel ash and used additive converted to an amount of SiO2, CaO, K2O, MgO and Al2O3. The mathematical model is relatively accurate with real ash melting temperatures and reaches accuracy about of 90 % compared with ash melting temperatures obtained by STN ISO 540 method in a laboratory.

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Aspects Affecting Emission Production from Small Heat Sources

Jandačka

Holubčík

2020

Mobility Internet of Things 2018

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Solar heat utilization for adsorption cooling device

Cited by 9 publications

References 0 publications

Additives application to wheat straw to increasing the ash fusion temperature

Additives application to wheat straw to increasing the ash fusion temperature

Mathematical Model for Prediction of Biomass Ash Melting Temperature using Additives

Aspects Affecting Emission Production from Small Heat Sources

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