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首页> 外文期刊>International Journal of Heat and Mass Transfer >Nonlinear models for mechanical energy production in imperfect generators driven by thermal or solar energy
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Nonlinear models for mechanical energy production in imperfect generators driven by thermal or solar energy

机译：由热能或太阳能驱动的不完美发电机中机械能产生的非线性模型

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摘要

In this paper we show how the nonlinear kinetics of energy transfer in propelling fluids and imperfect (non-Carnot) thermal machines can be imbed into the contemporary theory of irreversible energy generators and heat pumps. We quantitatively describe effects of nonlinear heat transfer assuming that heat fluxes are proportional to the difference of temperature in certain power, T{sup}a. We also show that the energy and particle transports can be treated either in a conventional way or as peculiar chemical reactions. In the latter case a recent approach distinguishes in each elementary transfer step two competitive (unidirectional) fluxes and the resulting flux follows as their difference. Nonlinear imperfect systems are investigated in the context of efficiency, heat flux, entropy production and mechanical power, for steady and unsteady operations.
机译：在本文中，我们展示了如何将推进流体和不完美（非卡诺）热力机械中能量传递的非线性动力学纳入现代不可逆能量发生器和热泵理论中。假设热通量与一定功率下的温度差T {sup} a成正比，我们定量描述非线性传热的影响。我们还表明，可以通过常规方式或特殊的化学反应来处理能量和颗粒传输。在后一种情况下，最近的方法在每个基本转移步骤中将两个竞争性（单向）通量区分开，并且所产生的通量作为它们的差值跟随。在效率，热通量，熵产生和机械功率的背景下研究了非线性不完美系统，以进行稳定和不稳定的操作。

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