Heat transfer enhancement, pumping power and weight minimization in enhanced heat exchangers has long been achieved by deploying tubes with internal surface modifications like microgrooves, ribs, fins, knurls, and dimples with and without tube inserts. This article presents a very extensive review of experimental and computational studies on heat transfer enhancement, which covers convectional and unconventional working fluids under different fluid flow conditions. Compound augmentation with tube surface modifications and inserts has yielded enhancements in the overall heat transfer coefficient of over 116% in the fully developed turbulent flow regime. Exotic fluids like nano-coolants deployed in spiral grooved mircofin tubes yielded 196% enhancement in tube side heat transfer rate for concentrations as low as 0.5% by volume, while the thermal efficiency index measuring the overall enhancement in relation to the pumping power was 75%. However, reviews that address the combined effect of unconventional fluids, surface modifications and tube inserts on the overall thermo-hydraulic performance of annular heat exchangers seem to be limited. Further, nano-coolants aren’t frequently used in the process industry. The goal of this study is to document and evaluate the impact of cost-effective and energy-saving passive enhancement techniques such as tube surface modifications, tube inserts, and annular enhancement techniques on annular heat exchangers used in the process industries with Newtonian and non-Newtonian fluids. This review should be useful to engineers, academics and medical professionals working with non-Newtonian fluids and enhanced heat exchangers.

长期以来，增强型换热器中的传热增强、泵送功率和重量最小化一直是通过部署具有内部表面改性的管子来实现的，例如微槽、肋条、翅片、滚花和带有或不带有管子插件的凹坑。本文对传热增强的实验和计算研究进行了非常广泛的回顾，其中涵盖了不同流体流动条件下的对流和非常规工作流体。在完全发展的湍流流态中，管表面改性和插入物的复合增强使总传热系数提高了 116% 以上。在螺旋槽微翅片管中部署的纳米冷却剂等外来流体在体积浓度低至 0.5% 的情况下，管侧传热率提高了 196%，而衡量与泵送功率相关的整体增强的热效率指数为 75%。然而，关于非常规流体、表面改性和管插入物对环形换热器整体热工水力性能的综合影响的评论似乎是有限的。此外，纳米冷却剂在加工工业中并不经常使用。本研究的目的是记录和评估具有成本效益和节能的被动增强技术（例如管表面改性、管插入和环形增强技术）对加工工业中使用的牛顿和非环形换热器的影响。牛顿流体。这篇综述对从事非牛顿流体和增强型换热器的工程师、学者和医疗专业人员有用。