Performance of casting aluminum-silicon alloy condensing heating exchanger for gas-fired boiler

Cao, Weixue; Liu, Fengguo; You, Xue-yi

doi:10.1007/s00231-018-2284-8

Cited by 14 publications

(4 citation statements)

References 14 publications

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“…In the numerical process, different mathematical models and boundary conditions were chosen to simulate the operation characteristics of the heat exchanger under different conditions. In order to ensure the accuracy and reliability of numerical simulation, this paper selects the comparison of experimental data and simulation data in the literature 8 to verify the reliability of numerical simulation results. The comparison results of experiment and numerical simulation are shown in Fig.…”

Section: Numerical Simulation Verification and Analysismentioning

confidence: 99%

Performance analysis of new structure heat exchanger based on field synergy and numerical simulation

Song¹,

Zhang

Jin³

et al. 2021

E3S Web Conf.

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High efficiency heat exchanger is always a hot topic, and field synergy theory is introduced as an important means to optimize the heat transfer efficiency. Based on the field synergy theory, a new type of heat exchanger is proposed in this paper, in which, the cold and hot fluid presents reverse cross flow law. Through the verification of the test and numerical simulation results, a reasonable numerical simulation model and method are obtained. Then, the flow and heat transfer conditions of the new structure heat exchanger are simulated by the verified numerical simulation technology. The conclusion is as follows: K-ε turbulence model and coupled heat transfer model can be effectively used in the numerical simulation of heat exchanger. And the reverse cross convection heat exchanger can effectively improve the uniformity of water temperature distribution in the heat exchanger.

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Section: Numerical Simulation Verification and Analysismentioning

confidence: 99%

Performance analysis of new structure heat exchanger based on field synergy and numerical simulation

Song¹,

Zhang

Jin³

et al. 2021

E3S Web Conf.

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show abstract

“…In order to solve the above problems, German engineer invented the steam pump flue gas condensation heat recovery system. Although the system solved the corrosion problem, it also brought the problems of high investment and low thermal efficiency 9 .…”

Section: Research Status Of Waste Heat Recovery Of Gas Boiler Flue Gasmentioning

confidence: 99%

Research on the experimental performance of gas-fired boiler based on the total heat recovery technology of absorption heat pump

Zhai¹,

Tian²,

Zhu³

et al. 2021

E3S Web Conf.

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Based on an example of a gas-fired boiler for an industrial user in Tianjin, the absorption heat pump technology was used to carry out energy-saving transformation of the above boiler. The actual test was carried out on the gas flow, exhaust gas temperature and other parameters from January 2, 2018 to February 26, 2018. And then, the thermal efficiency of the boiler was analysed. The results show that after the energy-saving transformation, the exhaust gas temperature of the gas-fired boiler can be reduced from 140 °C to about 40 °C, and the overall thermal efficiency of the boiler also rises from 89.5% to 101.3%, which is 13.2% higher than that before optimization. According to the economic analysis, the energy-saving reconstruction project can achieve an energy-saving economic benefit of 1.598 million yuan throughout the year, with obvious energy-saving and emission reduction benefits.

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“…Among the highest levels, the NOx emission concentration is 0.007% [2]. In the conventional water heater's pollutant emission control technology, the source combustion control technology is mainly used, while the condensing heat exchanger can control the pollutant emission from the source and process, so as to better realize the low pollutant emission of the water heater [3,4].…”

Section: Introductionmentioning

confidence: 99%

Experimental study on flow and heat transfer performance of condensing gas-fired boiler

Cao

Wang

Liu

et al. 2022

J. Phys.: Conf. Ser.

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In the process of energy utilization, a large amount of heat transfer needs to be realized through the heat exchange process. Therefore, the development of efficient enhanced heat exchange technology has important theoretical and application value for realizing the efficient utilization of energy and reducing pollutant emissions. Condensing heat exchanger is the core component of condensing water heater. Firstly, this paper analyses the development trend of condensing heat exchanger at home and abroad, and studies the heat exchange, pollutant emission and structural optimization design of condensing heat exchanger by using the gas water heater test-bed. Using the field synergy theory, the flow channel and fin structure of the heat exchanger are optimized. The series flow channel on the water side of the heat exchanger is optimized as the structure of first parallel and then series flow, so that the heat transfer capacity of the water side of the heat exchanger can be increased by 5.6% at the maximum, the reduction of NOx emission concentration is relatively less than 6.7%.

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Performance of casting aluminum-silicon alloy condensing heating exchanger for gas-fired boiler

Cited by 14 publications

References 14 publications

Performance analysis of new structure heat exchanger based on field synergy and numerical simulation

Performance analysis of new structure heat exchanger based on field synergy and numerical simulation

Research on the experimental performance of gas-fired boiler based on the total heat recovery technology of absorption heat pump

Experimental study on flow and heat transfer performance of condensing gas-fired boiler

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