Combustion increase

Decreasing the specific heat of combustion increases the amount of the coke that must be burned the coke component that increases is essentially the cat-to-od coke, which is increased by increasing the catalyst circulation rate. Cat-to-oil coke can be expressed as (20) ... 

The molar enthalpy of combustion increases with molar mass as might be expected, because the number of moles of CO, and H,0 formed will increase as the number of carbon and hydrogen atoms in the compounds increases. The heat released per gram of these hydrocarbons is essentially the same because the H to C ratio is similar in the three hydrocarbons. 

The decreased overall density of the mixing layer with combustion increases the dimensions of the large vortices and reduces the rate of entrainment of fluids into the mixing layer [13]. Thus it is appropriate to modify the simple phenomenological approach that led to Eq. (6.31) to account for turbulent diffusion by replacing the molecular diffusivity with a turbulent eddy dif-fusivity. Consequently, the turbulent form of Eq. (6.38) becomes... 

Al Li alloys and mixts were used. All of these metals, especially Be, Al Li readily formed protective oxide coatings. When a surface of a base metal was coated with. at least one metal (such as Be or Al) whose oxide formed in admixt with that of the base metal, at least one eutectic with mp below the ignition temp of the base metal, the ig-nitability was improved, and the speed of combustion increased and proceeded to completion. Examples of coated systems and their mp s are given in CA)... 

The residue after combustion increases considerably from 5.2% for the un-modified resin to 30% for the one containing 1.05% of phosphorus. The oxygen index changes from 19 for the un-modified resin to 22.4 for Jthe one containing 1.47% of phosphorus. 

The degree of combustibility increases with the proportion of phlogiston present. 

Heat of fusion, or latent heat, is the quantity of heat required to change 1 g of solid to a liquid with no temperature change. This latent heat increases with increasing molecular weight. Heat of combustion is the amount of heat produced by combustion of 1 kg of oil (104). The heat of combustion increases with the chain length of the fatty acids for both monoacylglycerols and triacylglycerols (107). 

The more the silicon is present, the more the heat of combustion increases. 

When compared to the case of the Co/Si02 catalysts, it can be seen that whereas over SmCo/Si-823 the temperatures required for total acetone combustion increase slightly, over the SmCo/Si-1073 catalyst these temperatures increase by more than 100 K. These results are somewhat similar to the ones obtained with the series of silica-supported manganese oxide catalysts. Despite the possible presence of SmCo03 in the catalyst calcined at 1073 K and the good catalytic performance of this perovskite in the acetone combustion [14], it seems likely that the behaviour of the SmCo/Si-1073 catalyst be mainly due to a poor dispersion of the supported metal oxides. This point is of particular importance for the perovskite oxides because the severe sintering taking place at temperatures above 973 K not only reduces the exposed surface area but also the density of surface defects active in oxidation reactions [23]. 

The transition values of the expansion ratio, which characterize the transition from low-velocity detonation to a high-speed galloping combustion, increase with fuel concentration within detonability limits ... 

The molar enthalpy of combustion increases with molar mass as might be... 

For every bit of order we produce, however, we produce an even greater amount of disorder. Petroleum, coal, and natural gas are burned to provide the energy necessary for us to achieve highly ordered structures, but their combustion increases the entropy of the imiverse by releasing C02(g), H20(g), and heat. Oxide and sulfide ores release C02(g) and 802(g) that spread throughout our... 

As the particle size decreases and the exposed surface area increases, the tendency of coal toward spontaneous combustion increases. 

Bio-briquette combustion decreases the generation of dust and soot to one-fifth to one-tenth that of direct coal combustion. Direct coal combustion increases the generation of dust and soot because the volatile matter released at low temperatures (200°C-400°C [390°F-750°F]) does not completely combust To the contrary, bio-briquettes simultaneously combust the low ignition point biomass, which permeates the coal particles, assuring the combustion of volatile matter at low combustion tanperatures. As a result, the amount of generated dust and soot is significantly reduced. 

Figure 2.3.17 shows the relationship between the heat of combustion and the number number of carbon atoms in the molecule. The heat of combustion increases as molecular weight increases and decreases when funetional groups are present... 

These reactions are exothermic and thermodynamically favorable, except the last. Most regeneration techniques are based on coke combustion increasing the temperature. 

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