Effectiveness analysis and optimum design of the rotary regenerator for thermophotovoltaic (TPV) system

Wu, Xi; Ye, Hong; Wang, Jianxiang; He, Jie; Yang, Jian

doi:10.1007/s11708-012-0184-z

Cited by 2 publications

(7 citation statements)

References 9 publications

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“…To approximate a solution by minimizing an associated error function, it then uses variational methods from the calculus of variations. For complex geometries, FEM is very effective (Sanaye and Hajabdollahi, 2009;Wu et al, 2012). Baclic (1995) used the Galerkin method to get a closed form approximate solution.…”

Section: Finite Element Methods (Fem)mentioning

confidence: 99%

“…It can be clearly seen that with the increase of the height and diameter, the effectiveness increases for both the original and modified models, but the modified values of effectiveness are comparatively less than original ones (Wu et al, 2012). Figure 5 represents the influence of regenerator diameter on effectiveness.…”

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 97%

“…With a rotational period of 3-15/s and a combustion power of 5 kW, they observed a deviation of 1.3% to 3.9%. In Figure 3 below, the deviation of effectiveness with rotational period/s is shown (Wu et al, 2012).…”

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 99%

“…However, the fluid diffusion coefficient must be measured so Wu et al (2012) established a new theoretical model in which it is showed that fluid turbulence has limited influence in effectiveness. Thus, a new theoretical model ignoring the fluid turbulence was established.…”

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 99%

“…Thus, a new theoretical model ignoring the fluid turbulence was established. Wu et al (2012) also represented the influence of the regenerator diameter on effectiveness in TPV systems of various combustion powers, when the rotary regenerator rotation period and height were 3 s and 76 mm, respectively. The influence of the regenerator diameter on effectiveness is shown in Figure 4.…”

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 99%

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Numerical Modeling of Regenerative Rotary Heat Exchanger: A Review

Baruah¹,

Kumar²

2017

Journal of Biosystems Engineering

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Background: Heat recovery is one of the prominent ways to save a considerable amount of conventional fossil fuel and minimize its adverse effects on the environment. The rotary heat exchanger is one of the most effective and efficient devices for heat recovery or heat exchanging purposes. It is a regenerative type of heat exchanger, which has been studied and used for many heat recovery purposes. However, regenerative thermal wheels have been mostly used as heat recovery systems in buildings. For modeling a rotary regenerator, it is very important to numerically consider all the factors involved, such as effectiveness, rotational speed, geometrical size and shape, and pressure drop (Δp). In recent times, several researchers have actively studied the rotary heat exchangers, both theoretically and experimentally. Reviews: In this paper different advances in the numerical modeling of regenerative rotary heat exchangers in relation to fluid flow and heat transfer have been discussed. Researchers have indicated that the effectiveness of the regenerative rotary heat exchanger depends on various factors including, among many others, rotational speed, rotational period and combustion power. It is reported that with the increase of periodic rotation the deviation of theoretical results from the experimental result increases. The available literature indicates that regenerative heat exchangers are having relatively more effectiveness (60-80%), compared to other heat exchangers. It is also observed that the finite difference method and finite volume methods are mostly used for discretizing the heat transfer governing equations, under some assumptions. Research also indicates that for the effectiveness calculation the ε-NTU method is the most popular and convenient.

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Section: Finite Element Methods (Fem)mentioning

confidence: 99%

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 97%

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 99%

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 99%

Section: Influence Of Period Of Rotation On Effectivenessmentioning

confidence: 99%

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Numerical Modeling of Regenerative Rotary Heat Exchanger: A Review

Baruah¹,

Kumar²

2017

Journal of Biosystems Engineering

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Analysis of Radiation Performance for a Combustion-End Radiator of a TPV System

Wang¹,

Xu²,

Yuan³

et al. 2013

AMM

Self Cite

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In this paper, the authors analyzed effects of the factors, such as the air mass flow rate, the geometric dimensioning of the inner and outer combustion tubes and the thickness of the radiator, to the performance of the combustion-end radiator system. The result shows that optimal performance will be achieved when the combustion power is 1kW and the air mass flow rate is 5 times higher than the requirement for the complete combustion of CH4. On this basis, the effect of the geometric dimensioning to the combustion-radiator system is discussed. The performance of the combustion-radiator system is the best when the inner diameter of inner tube is 24mm, the length of the combustion tube is 40mm and the radiator thickness is 1mm. In this condition, the average temperature of the radiant surface, the radiant power density of the radiator and the combustion efficiency are 1530K, 9.41W/cm2 and 47.3%, respectively.

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Effectiveness analysis and optimum design of the rotary regenerator for thermophotovoltaic (TPV) system

Cited by 2 publications

References 9 publications

Numerical Modeling of Regenerative Rotary Heat Exchanger: A Review

Numerical Modeling of Regenerative Rotary Heat Exchanger: A Review

Analysis of Radiation Performance for a Combustion-End Radiator of a TPV System

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