Full
Outline
To enhance the recovery and utilization efficiency of high‑temperature flue gas waste heat in natural gas heat treatment furnaces，an efficient bionic‑honeycomb twisted tube waste heat recovery unit is proposed to deeply recover waste heat from flue gas.The study designed a waste heat recovery unit consisting of nine bionic‑honeycomb twisted tubes and conducted numerical simulations of its condensation‑coupled heat transfer process using the CFD software Fluent.By varying the volume flow rates of combustion air and flue gas，the heat transfer and resistance characteristics of the bionic‑honeycomb twisted tubes were systematically analyzed.The results show that when the flue gas and combustion air volume flow rates are 0.889，0.978 m3/s，respectively，the system achieves optimal performance，cooling the 950 ℃ flue gas to 135 ℃ while heating the combustion air to 588 ℃.Under the operating condition with a Re of 6 860 and a water vapor content of 10%，the comprehensive heat transfer and economic performance of the recovery unit are optimal，with its performance evaluation index significantly improved by approximately 25% compared to conventional circular tube heat exchangers.Due to its unique structure，the bionic‑honeycomb twisted tube waste heat recovery unit achieves efficient energy recovery through enhanced heat transfer and can be universally applied to industrial furnace flue gas waste heat recovery，providing a reliable solution for industrial energy‑saving technological transformation.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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