Effect of heat transfer law on the finite time exergoeconomic performance of a generalized irreversible carnot heat engine

... (35) and (36) are the relations between profit rate and efficiency of the irreversible Carnot heat engine based on the radiative heat transfer law The relationships between the profit rate and ... total heat transfer surface area of the two heat exchangers is taken as a constant , that is F1 + F2 = FT (12) And a ratio ( f ) of heat exchanger area is defined as f = F1 F2 (13) Assuming that the ... ) (9) Figure The generalized irreversible Carnot heat engine cycle model Assuming the rates of the heat flow in the heat- exchangers follow the generalized radiative heat transfer law, q ∝ ∆(T...

Finite time exergoeconomic performance of a generalized irreversible carnot heat engine with complex heat transfer law

... paper analyzes the exergoeconomic performance of a generalized irreversible Carnot heat engine with a complex heat transfer law, including generalized convective heat transfer law and generalized ... result of the generalized irreversible Carnot heat engine with generalized radiative heat transfer law If n = , it is the result of the generalized irreversible Carnot heat engine with Newtown heat ... cycles with Newton heat transfer law Chen et al [19] obtained the maximum exergoeconomic performance of generalized irreversible Carnot engine with Newton heat transfer law In general, heat transfer...

Ecological performance of a generalized irreversible Carnot heat engine with complex heat transfer law

... results of irreversible Carnot heat engine with linear phenomenological heat transfer law [54, 57] If n = , they are the results of irreversible Carnot heat engine with radiative heat transfer law ... optimal ecological performance of the Carnot heat engine with heat resistance and heat leakage ( m ≠ 0, n ≠ 0, q > 0, Φ = ), and optimal ecological performance of the irreversible Carnot heat engine ... [51] Carnot heat engines by using a complex heat transfer law, including generalized convective heat transfer law [ Q ∝ (∆T )n ][18, 39-41, 47, 48] and generalized radiative heat transfer law [...

Finite time exergoeconomic performance optimization for an irreversible universal steady flow variable-temperature heat reservoir heat pump cycle model

... Conclusion Finite time exergoeconomic performance of an irreversible universal steady flow heat pump cycle model with variable-temperature heat reservoirs, and the losses of heat transfer and internal ... U L = and x = y = , equations (30) and (33) become the COP and finite time exergoeconomic performance of an irreversible variable-temperature heat reservoir steady flow Otto heat pump cycle with ... and y = , equations (30) and (33) become the COP and finite time exergoeconomic performance characteristics of an irreversible variable-temperature heat reservoir steady flow Dual heat pump cycle...

Finite time exergoeconomic performance optimization of a thermoacoustic heat engine

... Ceperly P H Gain and efficiency of a traveling wave heat engine J Acoust.Soc Am., 1982, 7(3): 1239-1243 [3] Yazaki T, Iwata A, mackawa T and Tominaga A Traveling wave thermoacoustic engine in a looped ... / F1 and FT = F1 + F2 Here, the total heat transfer surface area FT of the two heat exchangers is assumed to be a constant (3) There is a constant rate of heat leakage ( q ) from the heat source ... i is a complex heat transfer exponent, k1 is the overall heat transfer coefficient and F1 is the total heat transfer surface area of the hot-side heat exchanger, k2 is the overall heat transfer...

A CFD analysis on the effect of ambient conditions on the hygro-thermal stresses distribution in a planar ambient airbreathing PEM fuel cell

... Maher A. R Sadiq Al-Baghdadi A CFD study of hygro-thermal stresses distribution in tubularshaped ambient air-breathing PEM micro fuel cell during regular cell operation International Journal of Energy ... differential between the fuel cell stack and the operating environment make thermal management a challenging problem in PEM fuel cells As the ambient temperature increases, the air-breathing fuel cell ... to the onset of pore plugging, which has a detrimental effect of the fuel cell performance 2.1 Computational domain The full computational domains for the planar air-breathing PEM fuel cell consists...

Tài liệu Cleaner Water in China? The Implications of the Amendments to China’s Law on the Prevention and Control of Water Pollution pptx

... system.32 B The Law on Prevention and Control of Water Pollution and Regulations The LPCWP is China’s main national law focused on water pollution As amended in 2008, this law “is enacted for the purposes ... to the LPCWP, polluting industries are subject to a variety of rules and regulations Nationally, these include the Implementing Rules on the Law on the Prevention and Control of Water Pollution3 6 ... “navigable waters”), with Law on Prevention and Control of Water Pollution art (P.R.C.) 36 Implementing Rules on the Law on Prevention and Control of Water Pollution (promulgated by the State Council,...

báo cáo hóa học: " Approximate entropy detects the effect of a secondary cognitive task on postural control in healthy young adults: a methodological report" docx

... detect a change in postural control associated with the performance of a secondary cognitive task The ability to stand as still as possible was evaluated under single task (standing still) and dual ... measures like ApEn are useful as indices of relative constraint, because in theoretical terms they are interpreted as a characterization of the dynamic interactions among components within the ... that rather than viewing attention as a stabilizing vs destabilizing influence on postural control, perhaps a more informative framework would be to view attention as one of many constraints on...

Báo cáo hóa học: " Research Article The Effect of a Voice Activity Detector on the Speech Enhancement Performance of the Binaural Multichannel Wiener Filter" ppt

... with attack and release time constants τraise and τdecay The diﬀerences between the maxima and minima are calculated to obtain the current dynamic range of the signal (4) The decision for a speech ... vectors containing speech samples will be added to the noise data matrix in (5), which leads to cancellation of parts of the speech signal On the other hand, if too many actual noise samples are detected ... stationary directional noise and nonstationary diﬀuse noise The nonstationary noise is derived from recordings in a restaurant to approach a real world situation Section provides a discussion of...

Abtract of doctoral dissertation of jurisprudence the law on the enterprises righr to equal treatment in vietnam

... Concept of the law on equality among enterprises The law on equality among enterprises in Vietnam does not exist as an independent institution but is present in many legislations The law on equality ... proportional to benefit and violation is proportional to liability Contents of the law on equality among enterprises include: - Regulations on the principle for ensuring the right to equal treatment ... of enterprises right to equal treatment; Secondly, to improve the institutions to ensure enterprises right to equal treatment; 4.1 To further clarify the contents of enterprises right to equal...

Báo cáo khoa học: "Evaluation of the effect of a 3rd GnRH injection administered six days after the 2nd GnRH injection of Ovsynch on the reproductive performance of Japanese black cows" pps

... ultrasonography (Aloka, Japan) When no ovulation was confirmed, the cows received a 2nd injection of PGF analogue 11 days after the 1st PGF analogue injection Next, the 12 cows were randomly allocated ... with GnRH analogue days after ovulatory synchronization by Ovsynch- based treatments on the pregnancy rate in postpartum multiparous Japanese black cows Many studies have reported a relationship ... rate in Japanese black cows 278 Abdurraouf Omar Gaja et al Acknowledgments We are grateful to the staff of the IRIKI farm of Kagoshima University and the students at the theriogenology laboratory...

Báo cáo khoa học: "Effect of a feedback control by early secondary xylem formation on the outcome of competition between leafy shoots in apple (Malus x domestica Borkh.)" ppt

... part of the explanation However, cambial activity also interferes by long-term effects through variation in the conducting capacity of the main stem References Discussion and Conclusion The control ... control of secondary xylem differentiation by shoot growth in the bearing stem below is not easy to explain It differs markedly according to the complex dominance relations of the shoots: extreme habits, ... initial advance and cannot growing faster than shoot case is far from amplify it by The latter uncommon: amount to 40% of the total it may population, upon cultural conditions and treatments...

the impact of corporate social responsibility (csr) on the company’s financial performance

... to contribute to the betterment of society 2.2 The definition of CSR The definition of corporate social responsibility is not abstruse According to Business for Social Responsibility (BSR), corporate ... is the CSR? -  The definition of CSR The theories of CSR What is the finance performance?  What is the relationship between CSR and finance performance?  The role of CSR to increase profit of ... for their support and guidance I would also thank some my friends for their financial support for this project THE IMPACT OF CORPORATE SOCIAL RESPONSIBILITY (CSR) ON THE COMPANY’S FINANCIAL PERFORMANCE...

Báo cáo hóa học: " Research Article A Note on the Relaxation-Time Limit of the Isothermal Euler Equations" pdf

... equations,” Transactions of the American Mathematical Society, vol 359, no 2, pp 637–648, 2007 [2] S Junca and M Rascle, “Strong relaxation of the isothermal Euler system to the heat equation,” ... towards those of (1.6) for arbitrary large initial data in BV (R) space Marcati and Milani [3] showed the derivation of the porous media equation as the limit of the isentropic Euler equations ... Boltzmann equation,” Hokkaido Mathematical Journal, vol 14, no 2, pp 249–275, 1985 Jiang Xu: Department of Mathematics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China Email...

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