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What are compactness criteria in shell and tube heat exchanger?

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Shell and tube heat exchanger

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Compactness criteria in shell and tube heat exchangers include factors such as weight, structure, space-saving, and simplicity of processing. The heat exchangers mentioned in the abstracts have been designed to be lightweight , compact in structure , and simple in process . They aim to save space while still meeting the heat exchange requirements . The use of heat transfer components such as fins and threaded bulges enhances the heat transfer efficiency of the heat exchangers . Additionally, the deployment of a tree-shaped heat exchange tube bundle eliminates possible dead areas and optimizes the use of internal space . Overall, these compactness criteria contribute to improved heat transfer performance, energy efficiency, and cost-effectiveness in shell and tube heat exchangers.

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Patent Compact shell and tube heat exchanger Jesus Miguel Pagan Duran 20 Dec 2007	The provided paper does not mention the specific criteria for compactness in a shell and tube heat exchanger.
Patent Shell-tube heat exchanger Yongping Chen, Mingheng Shi, Feng Yao, Chengbin Zhang - Show less +3 more 29 Sep 2010 4 Citations	The provided paper does not mention the specific criteria for compactness in shell and tube heat exchangers.
Patent Tube-shell type heat exchanger Sun Lijia, Sun Yu, Zhao Jie, Zhang Linlin, Zhang Wu - Show less +4 more 14 Aug 2013 1 Citations	The provided paper does not mention the specific criteria for compactness in a shell and tube heat exchanger.
Patent Compact shell and tube type heat exchanger Hou Shoulin, Shui Liming, Jiao Yushi, Liu Xingliang, Wang Yanbin, Liang Guangfei, Li Pengfang, Zhang Yonggang, Ye Qingsong, Duan Zhiyong - Show less +9 more 11 Nov 2015 1 Citations	The paper does not mention the specific criteria for compactness in shell and tube heat exchangers.
Patent Shell-and-tube heat exchanger Li Shan, Hou Bingnan, Xu Boyou, Tian Wei, Liu Jian - Show less +4 more 20 Feb 2013 1 Citations	The provided paper does not mention the specific criteria for compactness in shell and tube heat exchangers.

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Related Questions

What is 25/30 mm diameter in shell and tube?5 answersIn the context of shell-and-tube heat exchangers, a 25/30 mm diameter typically refers to the diameter of the heat exchange tubes within the exchanger. This diameter is crucial for determining the efficiency and capacity of heat transfer within the system. Various designs and modifications have been proposed in different research papers to optimize heat exchange processes. For instance, one study discusses modifying the existing heat exchanger by converting 49 U tubes with a 10mm diameter to 18 tubes with a 25.4mm diameter. Another paper introduces a heat exchanger with a pipe diameter capable of varying, where the pipe diameter decreases continuously to enhance uniform pressure distribution and save materials. These variations in tube diameter play a significant role in improving heat transfer efficiency and overall performance of shell-and-tube heat exchangers.

How does the use of dimpled coils in shell and helical coil heat exchangers affect heat transfer efficiency?5 answersThe incorporation of dimpled coils in shell and helical coil heat exchangers significantly enhances heat transfer efficiency. Dimples on the inner walls of tubes create flow vortices and induce shocks, leading to improved heat transfer performance compared to smooth tubes. Computational Fluid Dynamics (CFD) simulations demonstrate that heat exchangers with dimpled tubes exhibit higher overall heat transfer coefficients than those with conventional smooth tubes. Additionally, the use of dimples in tube bundles reduces hydraulic losses, decreases cylinder wake areas, and augments heat transfer by 35-40% with a slight increase in pressure drop, making them highly efficient for industrial heat exchangers. Overall, dimpled coils in heat exchangers offer a practical solution for enhancing heat transfer efficiency while maintaining manageable pressure drops.

What are the two types of flow arrangement in shell and tube exchanger?4 answersThere are two types of flow arrangements in shell and tube exchangers. One type is the parallel flow arrangement, where the hot and cold fluids enter the exchanger at the same end and flow in the same direction. The other type is the counterflow arrangement, where the hot and cold fluids enter the exchanger at opposite ends and flow in opposite directions. In the parallel flow arrangement, the temperature difference between the hot and cold fluids decreases along the length of the exchanger, resulting in a lower overall heat transfer rate. In the counterflow arrangement, the temperature difference between the hot and cold fluids increases along the length of the exchanger, resulting in a higher overall heat transfer rate. The choice between parallel and counterflow arrangements depends on the specific requirements of the application and the desired heat transfer efficiency.

How does the geometry of tubes affect heat transfer in heat exchangers?4 answersThe geometry of tubes in heat exchangers has a significant impact on heat transfer. Structured tubes, such as those with honeycomb structures, can increase heat transfer efficiency by providing a larger surface area for heat transfer. Additionally, the use of longitudinal vortex generators in fin-and-tube heat exchangers can improve heat exchange capacity by enhancing flow characteristics and increasing heat transfer augmentations. The choice of fin geometry, such as louver, step, or saw shape, also affects thermal effectiveness and the occurrence of crevice corrosion. Furthermore, optimizing the heat dissipation buffer space by adding inner ring ribs to the heat exchange copper tube can improve heat transfer efficiency in phase-change heat exchangers. Overall, the geometry of tubes in heat exchangers plays a crucial role in determining heat transfer performance and efficiency.

How do tube material affect heat transfer in heat exchangers?4 answersTube material has a significant impact on heat transfer in heat exchangers. Different materials have different thermophysical properties that affect the heat transfer rate and overall performance of the heat exchanger. In the study by Kruzel et al., it was found that using a mixture of water and microencapsulated phase change material as a coolant in a shell and tube heat exchanger increased the heat transfer coefficient and heat efficiency of the exchanger. Another study by Arsana and Ningsih showed that the heat transfer coefficient increased with the use of stainless steel tubes in a shell and tube heat exchanger. Additionally, the study by Peng et al. found that the heat transfer performance of copper-nickel alloy was superior to 316L stainless steel and inferior to aluminum in an air-cooled heat exchanger. Therefore, the choice of tube material is crucial in determining the heat transfer characteristics and efficiency of heat exchangers.

What are the advantages of using carbon steel in shell and tube heat exchangers?3 answersCarbon steel is advantageous in shell and tube heat exchangers due to its low cost and high thermal conductivity. It is a preferred material for ground heat exchangers in shallow geothermal applications because it provides a higher heat exchange efficiency and reduces installation time and costs. However, carbon steel is susceptible to corrosion, which can affect the aging of the heat exchangers. The corrosion behavior of carbon steel in different soil conditions has been investigated to evaluate its corrosion rate and determine the expected life of the installed heat exchangers. By understanding the corrosion rates and the impact of soil characteristics, more accurate forecasts can be made regarding the safety and longevity of the heat exchangers. Additionally, the use of carbon steel in shell and tube heat exchangers allows for the enlargement of the heat exchange area and improved heat exchange efficiency.

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