Resorption Thermal Transformer Generator Design
Resorption Thermal Transformer Generator Design
复制标题
吸热式热变发电机的设计
DOI：
10.3390/en15062058
复制
发表时间：
2022-03
期刊：
影响因子：
3.2
通讯作者：
S. Hinmers;G. Atkinson;R. E. Critoph;M. van der Pal
中科院分区：
文献类型：
--
作者：
S. Hinmers;G. Atkinson;R. E. Critoph;M. van der Pal
这项工作采取了经验和证据为基础的方法来开发再吸收热变压器。它介绍了在讨论初步设计之前，为了解关键性能参数(性能系数和比平均功率)而进行的初步建模。大温升和等压加热的实验结果证实了氨-盐系统中传热的重要性。盐类复合吸附剂与管壁之间的换热阻力和换热流体对管壁的换热是实现吸收系统的关键。实验室规模样机的成功性能将取决于这些热阻的降低，而改进可能是未来样机的关键。一个吸附反应器的大小和介绍，它可以根据需要的功率输出的长度进行调整。提出的反应器设计是利用实验获得的氯化钙与氨反应的反应动力学常数和反应热数据推导出来的。这些数据使准确的建模能够实现反应堆的优化设计，重点放在关键性能指标上，如性能系数(COP)和系统功率密度。本设计为建立一个能够采集和发布动态数据以及计算实际再吸收系统COP的演示器奠定了基础。
This work takes an empirical and evidence-based approach in the development of a resorption thermal transformer. It presents the initial modelling conducted to understand key performance parameters (coefficient of performance and specific mean power) before discussing a preliminary design. Experimental results from large temperature jump and isosteric heating tests have identified the importance of heat transfer in ammonia-salt systems. Both the heat transfer resistance between the salt composite adsorbent and the tube side wall, and the heat transfer from the heat transfer fluid to the tube side wall are key to realising resorption systems. The successful performance of a laboratory-scale prototype will depend on the reduction in these heat transfer resistances, and improvements may be key in future prototype machines. A sorption reactor is sized and presented, which can be scaled for length depending on the desired power output. The reactor design presented was derived using data on reaction kinetics constants and heat of reaction for calcium chloride reacting with ammonia that were obtained experimentally. The data enabled accurate modelling to realise an optimised design of a reactor, focusing on key performance indicators such as the coefficient of performance (COP) and the system power density. This design presents a basis for a demonstrator that can be used to collect and publish dynamic data and to calculate a real COP for resorption system.