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Boiler efficiency calculation method for heat loss outside the system boundary
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Hongwu WANG1, Huan LIU1, Longwen YU2, Rongzu YANG2, Qiwei MU2, Ben ZHANG2, Pengcheng ZHAI2, Tian XIE2, Tingshan MA2
Thermal Power Generation | 2023, 52(12) : 140 - 146
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Thermal Power Generation | 2023, 52(12): 140-146
• Power generation technology forum •
Boiler efficiency calculation method for heat loss outside the system boundary
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Hongwu WANG1, Huan LIU1, Longwen YU2, Rongzu YANG2, Qiwei MU2, Ben ZHANG2, Pengcheng ZHAI2, Tian XIE2, Tingshan MA2
Affiliations
  • 1.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
  • 2.Xi’an TPRI Energy Conservation Technology Co., Ltd., Xi’an 710054, China
Published: 2023-12-25 doi: 10.19666/j.rlfd.202303047
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For the analysis of the heat applied to equipment outside the system boundary, the energy utilized was outside the GB/T 10184 standard, and the boiler efficiency calculation could not take advantage of the existing standard. The external heat loss of hot air was divided into two categories: hot air reuse and hot air non-reuse. Based on the GB/T 10184 calculation framework, the calculation methods of these two categories of external heat loss of hot air were proposed. Taking a 350 MW boiler as a practical example, under the same load, continuous operation of hot air external use and shutdown of hot air external use were compared. According to the actual test data and analysis results, the calculation method was used to compare the actual operating conditions. The influence of external loss of hot air on boiler efficiency was analyzed. The results showed that the test results of combustible materials in two working conditions were basically the same. The external loss of hot air in T01 (cold air recovery) was 0.82%, the external loss of hot air (cold air nonrecovery) was 0.13%, and the external loss of hot air in T02 was 0. The measured boiler efficiency in T01 and T02 conditions was 93.10% and 94.00% respectively. The operation of external hot air system reduced the boiler efficiency by about 0.9 percentage point.

boiler efficiency  /  calculation method  /  GB/T 10184  /  system boundary  /  hot air for external use
Hongwu WANG, Huan LIU, Longwen YU, Rongzu YANG, Qiwei MU, Ben ZHANG, Pengcheng ZHAI, Tian XIE, Tingshan MA. Boiler efficiency calculation method for heat loss outside the system boundary[J]. Thermal Power Generation, 2023 , 52 (12) : 140 -146 . DOI: 10.19666/j.rlfd.202303047
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  • Science and Technology Project of China Huaneng Group Co., Ltd.(HNKJ21-H66)
Appendix
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Year 2023 volume 52 Issue 12
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Article Info
doi: 10.19666/j.rlfd.202303047
  • Receive Date：2023-03-28
  • Online Date：2026-01-26
  • Published：2023-12-25
Article Data
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History
  • Received：2023-03-28
Funding
Science and Technology Project of China Huaneng Group Co., Ltd.(HNKJ21-H66)
Affiliations
    1.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
    2.Xi’an TPRI Energy Conservation Technology Co., Ltd., Xi’an 710054, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202303047
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Percentage of total
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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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