{'fraction_non_alphanumeric': 0.01694915254237288, 'fraction_numerical': 0.0, 'mean_word_length': 5.27536231884058, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Heat transfer enhancement in double-pipe heat exchanger: A review

Due to the wide need for heat transfer improvement in heat exchangers, it always stands a challenging field to grow effective and efficient heat transfer equipment with qualities of cost-effectiveness, reduced size, and maximum usage in a wide variety of applications under several operating conditions. The heat exchangers are mostly used to fulfil the requirements of high heat dissipation in industries. In this review article, a focused analysis is done on heat transfer improvement in double-pipe heat exchangers using different geometries in the flow, and heat transfer characteristics are also taken into consideration for the analysis. Many researchers have already analyzed a double-pipe heat exchanger as an experimental unit and with the help of simulation. Several past studies are examined and concluded to build an effective system using a heat exchanger. The significance of Prandtl number, Reynolds number, Nusselt number, and pressure drop coefficient quantities are shown in the studies. A close concern on nanoparticles in inside pipe is also studied for heat transfer improvisation using a double-pipe heat exchanger. New outcomes are perfectly verified and assist in the investigation of various other studies.