The increase of energy production is very important
nowadays. It is necessary to improve the performance and efficiency of heat
production facilities. The objective is to reduce pollutant emissions and
regulate investment costs. One of the solutions is to
control fuel and electricity consumption. This article develops a new model of
simulation heat diffusion on the recovery system of condensing boiler. The
method is based on the first and second thermodynamic systems. The Numerical
discrete Model (NDM) was applied using MATLAB to simulate different
characteristics of heat transfer in the recovery system. The result shows that
the recovery unit can absorb the following temperatures; the range from 88°C
to 90.7°C when the length of the tube is between respectively 110 and
111 m. the energy efficiency was between 0.55 and 0.57 which allowed confirming
the model. This new model has some advantages such as; the use of an
instantaneous calculation time. The heat recovered by the water tank can also
serve as preheating different systems. One part of the heat recovered will be
accumulated to be used as domestic hot water.
References
[1]
Mbiake, R. (2018) Renewable Energies in the Political Field and Equals Energy in Cameroon. Nomos, URL. https://www.jstor.org/stable/j.ctv941sr6.36?seq=1#metadata_info_tab_contents
[2]
Arivazhagan, S., Murugesan, S.N., Saravanan, R. and Renganarayanan, S. (2005) Simulation Studies on R134a—DMAC Based Half Effect Absorption Cold Storage Systems. Energy Conversion and Management, 46, 1703-1713. https://doi.org/10.1016/j.enconman.2004.10.006
[3]
Zhang, C.H., Zhao, Y.B., Shi, X.M. and Huang, X.P. (2020) Characterization of a New Total Heat Recovery System Using CaCl2 as Working Fluid: Thermal Modeling and Physical Analysis. Energy and Built Environment, 12. https://doi.org/10.1016/j.enbenv.2020.12.003
[4]
Zhen, H.R., Feng, W.L. and Wang, S. (2020) Analysis of Application Effect of Hot Water Storage Technology in Flue Gas Waste Heat Recovery. Journal of District Heating, 153-158.
[5]
Pashchenko, D. (2019) Thermochemical Recovery by Ethanol Steam Reforming: Thermodynamic Analysis and Heat Balance. International Journal of Hydrogen Energy, 44, 30865-30875. https://doi.org/10.1016/j.ijhydene.2019.10.009
[6]
Zhang, H.Z., Han, Z.W., Yang, L.Y., Yuan, J.W., Cheng, X.L., Ji, M.Z. and Li, G. (2020) Analysis of Influence of the Length of Ground Heat Exchangers on the Operation Characteristics and Economy of Ground Source Heat Pumps. Energy and Built Environment, 2, 127-136. https://doi.org/10.1016/j.enbenv.2020.09.003
[7]
Yue, L., Wu, J., Cao, F., Xue, R., Ma, H., and Yang, J. (2020) Design of a New Gas Waste Heat Recovery Device. Journal of Science and Technology Innovation, 33, 189-190.
[8]
Amaris, C., Miranda, B.C. and Balbis, M. (2020) Experimental Thermal Performance and Modelling of a Waste Heat Recovery Unit in an Energy Cogeneration System. Thermal Science and Engineering Process, 20, Article No. 100684. https://doi.org/10.1016/j.tsep.2020.100684
[9]
Fu, L., Tian, G.S., Sui, J. and Jiang, Y. (2003) Application of Absorption Heat Pump in Gas Heating and Condensing Heat Recovery. Acta Energiae Solaris Sinica, 24, 620-624.
[10]
Liu, J., Ye, B.C. and Chen, G.M. (2015) Study on the Performance of Open Cycleabsorption Heat Recovery System for Waste Heat Recovery. Journal of Engineering Thermophysics, 36, 474-477.
[11]
Wang, F. and Wang, Q. (2020) Deep Recovery Technology of Waste Heat from Boiler Flue Gas in Cold Region. Journal of Science and Technology Innovation, 34, 193-194.
[12]
Thaddaeus, J., Tanimu, I., Okon, E. and Ikeokwu, E. (2021) Innocent Performance Assessment of a Heat Recovery Unitusing a Turbine with Variableguide Vane Configuration for Application in Passenger Vehicles. Journal of Power and Energy Engineering, 9.
[13]
Wang, Y.X. (2017) Stratégie de modélisation des systèmes de valorisation énergétique: Applicationaux machines ORC et à absorption. Thèse, Université de Lyon, Lyon, 79 p.
