Improvement in thermal efficiency of regenerator system by using oxy-fuel combustion

Hong, Seri; Noh, Dong Soon; Lee, Eun Kyung

doi:10.1016/j.applthermaleng.2015.05.063

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…Figure 9 shows that if the valve switch time becomes longer, TRE and ERR decrease sharply. Furthermore, the decline of efficiencies has accelerated in the long switch time region, which is consistent with the conclusions of [5,6,12,14]. To ensure high efficiency, the valve switch time cannot be too long.…”

Section: Effect Of Inlet Flow Rate and Valve Switch Timesupporting

confidence: 84%

“…The latest literature on important research is summarized in Table 1. Kang et al [5,6] conducted an experimental study on the thermal efficiency of a regenerator system for a combustion furnace. They found that about 40% of exhaust gas was required to prevent the saturation of porous regenerative media, resulting in the effective utilization of exhaust heat.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Study on Heat Transfer Efficiency of Regenerative Thermal Oxidizers with Three Canisters

Yuan

2021

Processes

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The heat transfer efficiency of a regenerative thermal oxidizer with three canisters used for volatile organic compounds treatment was studied using numerical simulation methods. A one-dimensional model that took into account the variation of physical parameters with temperature was built. The results show that the preheating temperature and outlet temperature tend to be stable as the operation time is increased. The heat transfer efficiency of equipment was mainly evaluated by heat recovery efficiency and energy recovery ratio under steady state conditions, which was affected by the inlet gas flow and temperature, valve switch time, combustion temperature, materials and porosity of the regenerative medium, and packing height. With the increase in packing cross-sectional area and packing height, the increase in heat transfer efficiency leads to an increase in equipment cost. Simultaneously, the shorter the valve switch time and the higher the density of the regenerative medium battery also help to improve the heat transfer efficiency without blocking equipment. Unless the removal efficiency of volatile organic compound treatment is reduced, it is recommended to reduce the inlet and combustion temperatures.

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Section: Effect Of Inlet Flow Rate and Valve Switch Timesupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Numerical Study on Heat Transfer Efficiency of Regenerative Thermal Oxidizers with Three Canisters

Yuan

2021

Processes

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“…The higher the heat storage efficiency, the more fully the heat carried by flue gas is utilized. Hong et al [17] pointed out that the length of the regenerator is the main factor affecting the temperature efficiency, but the void ratio has little effect on it, so this paper focuses on the study of the heat storage efficiency of different length regenerators.…”

Section: Heat Storage Efficiencymentioning

confidence: 99%

“…The experimental conclusion shows that the average convective heat transfer coefficient of porous honeycomb regenerator increases with the increase of high-temperature gas flow rate and the decrease of pore size. Some re-searchers also use temperature efficiency (the ratio of actual flue gas heat release to theoretical maximum heat release) [15][16][17] and heat recovery rate (the ratio of actual flue gas heat absorbed by heat storage system to theoretical maximum flue gas heat absorbed) [18][19] to characterize heat storage. The study shows that both of the efficiencies increase with the increase of the length of the regenerator.…”

Section: Introductionmentioning

confidence: 99%

Experiment and characterization of dynamic thermal storage characteristics of porous media thermal storage system

Yan

Cheng

Zhang

et al. 2022

TSE

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The aim is to understand the thermal storage characteristics of porous media thermal storage materials under thermal dynamic conditions, and obtain the dynamic thermal storage characteristics parameters of thermal storage materials. In the 120 kW thermal dynamic thermal storage system of porous media, we studied the dynamic thermal storage characteristics of honeycomb porous ceramic thermal storage materials with different pore diameters (2.9, 4, 5.5 mm) and lengths (100–400 mm) under different hot flue gas conditions include thermal storage rate, thermal storage efficiency and storage. The results show that the relationship between the heat storage rate and time is parabolic, and the heat storage efficiency gradually decreases with the heat storage time. At the same time, the regenerative rate and unit regenerative resistance loss increase with the increase of specific surface area or the decrease of pore diameter of regenerator, and the regenerative efficiency increases with the increase of regenerator length. According to the experimental research and analysis, the dynamic heat storage characteristics of porous regenerator can be characterized by heat storage rate, heat storage efficiency and unit heat storage resistance loss.

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Thermodynamic Study on the Utility Oxy-Fuel Boiler with Different Oxygen Volume Fractions

Wang

et al. 2021

Clean Coal and Sustainable Energy

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Improvement in thermal efficiency of regenerator system by using oxy-fuel combustion

Cited by 10 publications

References 12 publications

Numerical Study on Heat Transfer Efficiency of Regenerative Thermal Oxidizers with Three Canisters

Numerical Study on Heat Transfer Efficiency of Regenerative Thermal Oxidizers with Three Canisters

Experiment and characterization of dynamic thermal storage characteristics of porous media thermal storage system

Thermodynamic Study on the Utility Oxy-Fuel Boiler with Different Oxygen Volume Fractions

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