Biomass is considered as one of the most promising fuels worldwide, mostly because its renewability and almost-neutral carbon balance. At same time, numerous studies have shown that combustion biomass results in emissions multiple gaseous particle phase pollutants. The aim this study was to fill gap data from agricultural fuels. Five residue-derived were tested: sunflower stalk pellets, straw buckwheat shells, corn wheat grain screenings. In addition, wood sewage sludge pellets investigated...

In the paper, patterns of NOx formation from fuel bound nitrogen have beeen analyzed when burning various types biofuel containing nitrogen, and also chip-ped waste furniture production. It has been established that conversion to slightly de-pends on type whether contai-ned in is naturally or an artificial additive. concluded heating up 500°C, 30% substances releases together with volatile substances. shown that, applying thermal processing fuel, a part may be removed fuel. can reduced by...

In order for the operation of condensing heat exchanger to be efficient, flue gas temperature at inlet should reduced so that condensation can start from very beginning exchanger. A possible way reduce is injection water into flow. Injected additionally moistens and increases its level humidity. Therefore, more favorable conditions are created transfer. The results presented in second paper series on transfer indicate flow drastically changes distribution temperatures along enhances local...

Three Salix viminalis and four S. dasyclados genotypes were studied in 2004–2007. The intensity of bush growth, the number sprouts per bush, their slenderness dynamics biomass production evaluated. analysis data showed that height bushes differed every year. highest reached up to 578 cm (S. ‘Tora’) 504 9977) after years growth. There was a tendency change bush: maximum during second year while it decreased third fourth years. thickest stems characteristic (4.1 cm) × 04120 (3,5 genotypes....

In boiler houses, the biggest heat energy losses are caused by flue gas being released into atmosphere. Installation of condensing exchangers allows reducing temperature released, condensation water vapor, and, thus, efficient use waste heat. There many investigations average transfer in different types exchangers. They indicate also that cooling flow rate and its important parameters defining vapor efficiency. Investigations local very limited. Only recently experimental Re number effect on...

Present EU regulations promote search for efficient means of reducing environmental pollution caused by fuel‐burning equipment. Primary NOx reduction are a limited efficiency. The aim this study is investigation and development Selective Non‐Catalytic Reduction (SNCR) Control. This method can be applied in the existing boilers that have no external flue gas cleaning equipment, main advantage method. Experimental influence various reagent solutions on concentration was carried out stand...

The droplet heat and mass transfer processes are important for liquid spraying technologies, which were investigated when applying the theoretical numerical modelling experimental methods. In this work, results of research on heating water droplets in purified biofuel flue gas presented analyzed. investigation, is replaced by additionally humidified airflow. experiment methods processing discussed provided. Impact air additional humidification was estimated. While humidifying flow focused...

An experimental research method and an analysis of the results a water droplet phase change in additionally humidified air flow are presented. The diagrams variation equivalent diameter convectively heated droplets presented analysed. influence initial temperature humidifying on transient regime is experimentally substantiated.

Reducing nitrogen oxides (NOx) emissions is becoming much more difficult and expensive for stricter environmental requirements. NOx emission restriction could not be achieved only by primary reduction methods. This paper presents results of experimental research work removal selective non-catalytic (SNCR) technology. Experiments were performed in the temperature range 1000–1200 oC to investigate effects additives (NH3, CH4, C2H2 mixture C3H8/C4H10). Comparing while burning furniture...

The change in the thermal and energy state of water droplet is defined numerically. influence dispersity on interaction transfer processes was evaluated. In Stefan flow considered as well. internal heat by combined through effective conductivity radiation model. results numerical modeling mass droplets a wet flue gas 1000 °C highlight variation regimes consistently varying phase regimes. investigation shows that inner convection diminishes intensively transitional regime because rapid...

The paper presents an investigation of transient flow viscous incompressible material from inside the nozzle to outside in a forming box by using specially developed 3-D numerical model. Model is fitted for quantitative analysis product parameters area, which characterised as having free surfaces and makes no restrictions product. An optimal law movement was obtained order improve filling quality guarantee nice levelling it’s top surface. DOI: http://dx.doi.org/10.5755/j01.mech.20.5.7753

This work presents the mathematical model, which defines interaction of complex heat and mass transfer processes in cycle consistently changing condensation, transit equilibrium evaporation regimes water droplets high-temperature humid gas flow, as well methodology its numerical iterative solution. The provided scheme average instantaneous temperature droplet's surface works according to method steepest descent, is based on balance fluxes. Phase change were modelled for cold warm at...

This paper presents the results of a numerical investigation sprayed hydrocarbon n-decane droplets evaporation processes. For case conductive heating heat fluxes on surface evaporating droplet were examined. Characteristic curves unrelated to initial diameter obtained after aforementioned normalized and displayed in Fourier time coordinates. The influence temperature surrounding thermal radiation was investigated. As result this investigation, possibility equilibrium state, rate intensity...

The paper presents the simulation results of a high molecular weight hydrocarbon n-decane droplet evaporation in still air. Evaporation symmetrically heated droplets different diameters was investigated. Droplets are two ways - only by conduction from high-temperature air or and symmetrical absolutely black temperature heat radiation source. internal thermal state modelled together with external heating droplet. Although “external” liquid mass transfer task flow seen as independent,...