Effect of composition of fuel pellets on their quality parameters

The present researches are aimed at studying the influence of composite pellets on their quality measures. To obtain experimental samples of pellets, we used the main tree species of wood, that is pine, alder and birch. Found that the pellets produced from hardwood inferior in mechanical strength of the pellets obtained from pine. Technological solution to this problem was to establish the optimal composition of the fuel pellets and chemical activation of hardwoods. The highest strength pellets are achieved with the use of starch. The laboratory results were tested in industrial applications through the issuance of an experimental batch of fuel pellets

Development of composition of pellet on the basis wood biomass from logging waste

The real researches are directed on study of influence of waste of logging in compositions pellt on their main figures of merit. Woody biomass feedstock was to obtain experimental samples of pellets sawdust, pine needles and bark. Complex and contradictory nature of the influence of each component of woody biomass was studied on a set of properties of pellets. Found that the optimum content of the investigated components in the composition is sawdust – 70%, needles – 5% and bark – 25%. In this case the best combination of values of quality pellets obtained: density – 1.49 g / cm 3 , ash content 0.42%, and the mechanical strength – 6.5 MPa. Release on the results of studies conducted an experimental batch of pellets

Modification of wood byglutinous compounds in productions fuel pellets

These present researches are aimed at establishing the expediency of using modification of wood in the production of fuel pellets. The results of tests of pellets samples of the modified wood showed that in general use as a modifying agent protein adhesive ismore effective than the use of starch pastes. The best values of the physico-mechanical properties were obtained for pellets samples of wood modified by gelatin and albumin at a rate of 0.5%

Technology features of fuel pellets from deciduous wood

The present researches are aimed at studying the physical and mechanical properties of pellets produced from hardwood. For the experiment black alder and birch widespread on the territory of the Republic of Belarus hardwood timber has been chosen. It is stated that the use of wood in an unaltered form is impractical because the pellets derived from them have a low mechanical strength. The technological solution of this problem was the treatment of crushed wood raw material by saturated steam. The results of industrial tests confirmed that wood particles activation of hardwood fuel pellets gives the required quality standard. Technical feature of the technology is the use of a matrix with the length of the pressing channel 33 mm

Effect of composition of fuel pellets on their quality parameters

The present researches are aimed at studying the influence of composite pellets on their quality measures. To obtain experimental samples of pellets, we used the main tree species of wood, that is pine, alder and birch. Found that the pellets produced from hardwood inferior in mechanical strength of the pellets obtained from pine. Technological solution to this problem was to establish the optimal composition of the fuel pellets and chemical activation of hardwoods. The highest strength pellets are achieved with the use of starch. The laboratory results were tested in industrial applications through the issuance of an experimental batch of fuel pellets

Development of composition of pellet on the basis wood biomass from logging waste

The real researches are directed on study of influence of waste of logging in compositions pellt on their main figures of merit. Woody biomass feedstock was to obtain experimental samples of pellets sawdust, pine needles and bark. Complex and contradictory nature of the influence of each component of woody biomass was studied on a set of properties of pellets. Found that the optimum content of the investigated components in the composition is sawdust – 70%, needles – 5% and bark – 25%. In this case the best combination of values of quality pellets obtained: density – 1.49 g / cm 3 , ash content 0.42%, and the mechanical strength – 6.5 MPa. Release on the results of studies conducted an experimental batch of pellets

Modification of wood byglutinous compounds in productions fuel pellets

These present researches are aimed at establishing the expediency of using modification of wood in the production of fuel pellets. The results of tests of pellets samples of the modified wood showed that in general use as a modifying agent protein adhesive ismore effective than the use of starch pastes. The best values of the physico-mechanical properties were obtained for pellets samples of wood modified by gelatin and albumin at a rate of 0.5%

Technology features of fuel pellets from deciduous wood

The present researches are aimed at studying the physical and mechanical properties of pellets produced from hardwood. For the experiment black alder and birch widespread on the territory of the Republic of Belarus hardwood timber has been chosen. It is stated that the use of wood in an unaltered form is impractical because the pellets derived from them have a low mechanical strength. The technological solution of this problem was the treatment of crushed wood raw material by saturated steam. The results of industrial tests confirmed that wood particles activation of hardwood fuel pellets gives the required quality standard. Technical feature of the technology is the use of a matrix with the length of the pressing channel 33 mm

Study of functional adaptation of the visual system in the conditions of experimental modes of artificial gravity, created on a short-radius centrifuge

Purpose. To evaluate the functional adaptation of the visual system in the conditions of experimental modes of artificial gravity created on a short-radius centrifuge.Materials and methods. The study involved 9 healthy volunteers (9 eyes) aged 31.2±6 years. Each test person has passed 3 rotations on the short-radius centrifuge. The current factor in the tests was the overloads in the direction of ≪head-pelvis≫. Rotations were carried out in three modes, further conditionally designated ≪Mode 1≫, ≪Mode 2≫, ≪Mode 3≫ (maximum value of overloads at feet level up to 2.0; 2.4 and 2.9 G, respectively). Before and after each rotation the subjects underwent refractometry, determined pupil diameter, intraocular pressure and hydrodynamic parameters of the eye, evaluated hemodynamics in the vessels of the eye, orbit and i nternal carotid artery.Results. Intraocular pressure after the rotation in the modes 1 and 2 did not change, in the mode 3 – decreased by 1.0 mmHg according to tonometry (p=0.024), according to tonography by 2.8 mmHg (p=0.007) which correlated with a decrease in the rate of intraocular fluid production by 0.67 mm3 (p=0.046). After rotation in the mode 1 the blood flow rate in the internal carotid artery and the ophthalmic artery did not change, in the mode 2 the final diastolic blood flow rate in the internal carotid artery decreased by 2.6 cm/s (p=0.011), in the ophthalmic artery did not change, in the mode 3 the blood flow rate in the internal carotid artery did not change, in the ophthalmic artery – increased by 9.5 cm/s (p=0.015).Conclusions. Changes hemo- and ophthalmo-hydrodynamics in healthy subjects are within normal limits, which suggest that the visual system has wide possibilities of functional adaptation to the conditions of experimental modes of artificial gravity