| Title |
Modelling of the influence of droplet dispersity on droplet vaporization in the high-temperature flue gas in the case of combined heating / |
| Authors |
Miliauskas, Gintautas ; Puida, Egidijus ; Poškas, Robertas ; Poškas, Povilas |
| ISBN |
9788194466413 |
| Full Text |
|
| Is Part of |
Prime archives in sustainability / editor: M.H. Henriques.. Hyderabad : Vide leaf, 2021. p. 1-51.. ISBN 9788194466413 |
| Keywords [eng] |
water droplets ; phase change ; high-temperature flue gas ; combined heating ; transfer process interaction |
| Abstract [eng] |
The change in the thermal and energy state of the water droplet is defined numerically. The influence of droplet dispersity on the interaction of the transfer processes was evaluated. In influence of the Stefan flow was considered as well. The internal heat transfer of the droplet was defined by the combined heat transfer through effective conductivity and radiation model. The results of the numerical modeling of heat and mass transfer in water droplets in a wet flue gas flow of 1000 °C highlight the influence of the variation in heat transfer regimes in the droplet on the interaction of the transfer processes in consistently varying phase change regimes. The results of the investigation show that the inner heat convection diminishes intensively in the transitional phase change regime because of a rapid slowdown of the slipping droplet in the flue gas. The radiation absorption in the droplet clearly decreases only at the final stage of equilibrium evaporation. The highlighted regularities of the interaction between combined transfer processes in water droplets are also valid for liquid fuel and other semi-transparent liquids sprayed into high-temperature flue gas flow. However, a qualitative evaluation should consider individual influence of dispersity that different liquids have. |
| Published |
Hyderabad : Vide leaf, 2021 |
| Type |
Book part |
| Language |
English |
| Publication date |
2021 |
| CC license |
|
