【摘要】 对固体吸附系统中的传热过程进行了合理的数学建模 ,对吸附床内的热传导方程和换热管内流体的能量控制方程进行离散并利用控制容积法进行了模拟数值计算 ,在数学模型中加入了与其他模型不同的而更符合实际情况的随时间变化的边界条件 ,得到了较为满意的吸附床内吸附剂和换热管内流体的互相耦合的温度场 .更多还原

【Abstract】 In this paper, a theoretical analysis of the heat transfer process in a adsorber model is developed. For transient heat conduction in the bed, the unsteadystate Fourier heat conduction equation is applied. Based on some assumptions, boundary conditions and the energy governing equation of the fluid in the cartridge heater are obtained. By the application of control volume approach and implicit central difference scheme, the heat conduction equation and the energy governing equation are discretized, and finite difference equations for the pillar adsorber are derived for simulative numerical solution by computer. In comparison with other calculation models, the boundary condition is dependent on time and tallied with the actual situation more, and the conjugated temperature field in the bed and tube is obtained.更多还原