Thermodynamic performance and heat and mass transfer analysis of air source absorption heat pump for heating

Fan, Xianwang; Pu, Jiaxuan; Wu, Zhangxiang; Wang, Yaran; You, Shijun; Zhang, Huan; Liu, Jiali; Jiang, Yan; Liu, Sujie; Wan, Zhihao

doi:10.1016/j.jobe.2023.107390

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…At the same time, it can be seen that the boiler feedwater temperature at the absorption heat pump outlet increases linearly with the extraction steam flow of the driving heat source. The electricity generation of the coal-fired power plant also increases, which is consistent with the research conclusion of the literature . The feedwater temperature at the #6 low-pressure heater inlet is 83.8 °C, and the extraction steam flow is only 15.25 t/h for the absorption heat pump to meet the requirements.…”

Section: Resultssupporting

confidence: 88%

“…The electricity generation of the coal-fired power plant also increases, which is consistent with the research conclusion of the literature. 39 The feedwater temperature at the #6 low-pressure heater inlet is 83.8 °C, and the extraction steam flow is only 15.25 t/h for the absorption heat pump to meet the requirements. At the same time, the electricity generation increased is 0.19 MW in the coal-fired power plant.…”

Section: Operational Characteristics Of Flue Gasmentioning

confidence: 99%

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Research on Thermodynamic Characteristics of the Saturated Flue Gas Waste Heat Recovery to Reduce Turbine Extraction Steam

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confidence: 88%

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Parameter Optimization of an Absorption Heat Exchanger with Large Temperature Difference

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et al. 2024

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The absorption heat exchanger with a large temperature difference has a higher heat transfer superiority than the other heat exchangers (including plate heat exchanger), which is more suitable for long-distance heating. To improve its system performance, parameter collaborative optimization (including building accurate predictive models) has become an effective method because it does not require too much investment. In this study, a heat exchange station was chosen as a case study, and a model of a long short-term memory (LSTM) neural network was used to predict the temperatures of primary return water and secondary return water. Accordingly, the reliability of the fitting result based on the model was confirmed through a contrastive analysis with the prediction results of a support vector machine (SVM) model, a random forest (RF) model, and an extreme gradient boosting (XGBoost) model. In addition, the algorithm of particle swarm optimization was used to optimize the flow rate of primary supply water. The results showed that the temperature of primary-side return water decreased from 29.6 °C to 28.2 °C, the temperature of secondary-side return water decreased from 39.8 °C to 38.6 °C, and the flow rate of primary-side supply water decreased from 39 t/h to 35.2 t/h after the optimization of the flow rate of primary supply water. The sensibility assessment emerged that the secondary-side flow rate to the secondary-side supply water temperature was about 7 times more sensitive than the primary-side supply water temperature, and concretely, the lower the temperature, the higher the sensibility. In summary, the accuracy of the proposed prediction model was validated and the optimization direction was pointed out, which can be used to provide guidance for designing and planning absorption heat exchange stations with large temperature differences.

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Thermodynamic performance and heat and mass transfer analysis of air source absorption heat pump for heating

Cited by 3 publications

References 33 publications

Research on Thermodynamic Characteristics of the Saturated Flue Gas Waste Heat Recovery to Reduce Turbine Extraction Steam

Research on Thermodynamic Characteristics of the Saturated Flue Gas Waste Heat Recovery to Reduce Turbine Extraction Steam

Study of the Performance of a Photovoltaic and Heat Pump Coupling System in a Low-Carbon Community

Parameter Optimization of an Absorption Heat Exchanger with Large Temperature Difference

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