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首页> 外文期刊>International Journal of Heat and Mass Transfer >Complex chemical Systems with power production driven by heat and mass transfer
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Complex chemical Systems with power production driven by heat and mass transfer

机译：复杂的化学系统，通过传热和传质产生动力

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摘要

In this paper, we investigate power production in complex multireaction systems propelled by either uncoupled or coupled multicomponent mass transfer. The considered system contains two mass reservoirs, one supplying and one taking out the species, and a power-producing reactor undergoing the chemical transformations characterized by multiple (vector) efficiencies. To establish a suitable basis for these efficiencies, an approach is applied that implements balances of molar flows and reaction invariants to complex chemical systems with power production. Reaction invariants, i.e., quantities that take the same values during a reaction, follow by linear transformations of molar flows of the species. Flux balances for the reacting mixture may be written down by equating these reaction invariants before and after the reactor. Obtained efficiency formulas are applied for steady-state chemical machines working at the maximum production of power. Total output of produced power is maximized at constraints which take into account the (coupled or uncoupled) mass transport and efficiency of power generation. Special attention is given to non-isothermal power systems, stoichiometric mixtures and internal dissipation within the chemical reactor. Optimization models lead to optimal functions that describe therm-okinetic limits on power production or consumption and extend reversible chemical work W_(rev) to situations in which reduction of chemical efficiencies, caused by finite rates, is essential. The classical thermostatic theory of reversible work is recovered from the present thermokinetic theory in the case of quasistatic rates and vanishing dissipation.
机译：在本文中，我们研究了由非耦合或耦合多组分传质推动的复杂多反应系统中的发电。所考虑的系统包括两个质量库，一个用于供应物质，一个用于去除物种，以及一个发电反应堆，该反应堆正在进行化学转化，具有多种（矢量）效率。为了为这些效率建立合适的基础，采用了一种方法，该方法实现了摩尔流量和不变量与发电的复杂化学系统之间的平衡。反应不变性，即在反应过程中取相同值的量，随后是物质的摩尔流量的线性变换。可通过将这些反应不变量等同于反应器之前和之后来记述反应混合物的通量余额。所获得的效率公式适用于以最大功率工作的稳态化学机械。考虑到（耦合或非耦合）传质和发电效率，在约束条件下，产生的总功率输出最大。特别注意化学反应器内的非等温功率系统，化学计量混合物和内部耗散。优化模型可产生描述电力生产或消耗的热动力学极限的最佳函数，并将可逆化学功W_（rev）扩展到必须由有限速率导致化学效率降低的情况。在准静态速率和消失的情况下，可逆功的经典恒温理论是从当前的热动力学理论中恢复的。

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