| 摘要 |
Mixtures of reactant gases containing nitrogen ar reacted by being raised to very high temperatures at the focal plane of a solar concentrator when radiant energy is absorbed by a metal screen or other porous material in contact with the reactants at the focal plane of a solar concentrator and the resulting products of combined nitrogen are rapidly cooled in a unique heat transfer unit which rapidly transfers the heat of the product gases to the reactant gases and the rapid cooling of the product fixes the high temperature equilibrium proportions to achieve larger proportions of product than would be possible by gradual cooling. The heat that is transferred from the product gases to a set of clusters of metal tubes during one period of a cycle is transferred from the tubes to reactant gases during a second period of the cycle by a reversal of gas flow direction through the tubes and through the screen, the reversal also causing a second set of tubes, which was cooled by the transmission of reactant gases to the screen in the first period, to absorb heat from the products during the second period with the effect that repeated reversal of gas flow direction provides a two part cycle in which one, then the other, set of tubes first absorbs product heat and later gives up the heat to preheat incoming reactant gases. The coaxial placement of the various sets of heat transfer tubes with their openings confronting and immediately adjacent to the screening the focal plane provides for very rapid cooling and removal of the product before it can undergo any gradual cooling.
|
