Exergoeconomic optimization of an irreversible regenerated air refrigerator with constant temperature heat reservoirs

... refrigeration cycle The model of an irreversible regenerated air (Brayton) refrigerator with constant- temperature (hot reservoir temperature TH and cold reservoir temperature TL ) heat reservoirs to be considered ... (linear heat transfer law is applied between the heat reservoir and the working fluid) and the theory of heat exchangers, the rate of heat transfer ( QH ) released to the heat sink, the rate of heat ... ambient temperature( τ ) As the air refrigeration cycle model is a steady flow model, the total heat transfer surface area of the heat exchangers is a constant, and the distribution of heat exchange...

Cooling load and COP optimization of an irreversible Carnot refrigerator with spin-1/2 systems

... (58), (67) and (68), for given S1 and S , one can drive the maximum cooling load and corresponding COP of the irreversible quantum Carnot refrigerator with heat resistance and heat leakage analytically ... performance of harmonic and spin-1/2 quantum refrigeration cycles, many authors studied the performance of quantum refrigerator using ideal quantum Bose and Fermi gases [36-38] Bartana and Kosloff ... on equations (63) and (64), it is hard to optimize cooling load and COP of the refrigerator and to obtain the fundamental relations between the optimal cooling load and COP analytically Fig gives...

Cooling load optimization of an irreversible refrigerator with combined heat transfer

... generalized heat transfer law including generalized convective heat transfer law and generalized radiative heat transfer law has been derived [11] The heating load and coefficient of performance of a ... The objective of this work is to obtain the cooling load and the maximum cooling load of a refrigerator with internal and external irreversibilities working with combined heat transfer including ... Figures and show the effects of heat conductance ratio H and heat transfer area ratio A on the cooling load, respectively Both parameters, H and A, have the same effect on the cooling load as can...

Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 1: Thermodynamic model and parameter analyses

... Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 2: heat conductance allocation and pressure ratio optimization Int J Energy and Environment, ... performed the performance analysis and optimization for various cogeneration plants by using finite-time thermodynamics Bojic [19] investigated the annual worth of an endoreversible Carnot cycle cogeneration ... consideration of the system sizes, and investigated the general and optimal performances of an irreversible Carnot cycle cogeneration plant In industry, Brayton cycle is widely used and some authors...

Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 2: Heat conductance allocation and pressure ratio optimization

... Yang B, Sun F Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 1: thermodynamic model and parameter analyses Int J Energy and ... ) ratio of the specific heats temperature ( K ) heat conductance ( kW / K ) hot-side heat conductance allocation heat conductance allocation of the intercooler consumer-side heat conductance allocation ... five heat conductance allocations of the hot-, cold- and consumer-side heat exchangers, the intercooler and the regenerator for a fixed total heat exchanger conductance, the optimal heat conductance...

Exergoeconomic performance optimization of an endoreversible intercooled regenerative Brayton combined heat and power plant coupled to variable-temperature heat reservoirs

... endoreversible intercooled regenerative Brayton CHP plant coupled to constant-temperature heat reservoirs A thermodynamic model of an endoreversible intercooled regenerative Brayton CHP plant coupled to variable-temperature ... consumer-side heat exchangers, the regenerator and the pressure ratio of the compressor Chen et al [44] and Yang et al [45] analyzed and optimized the finite time exergoeconomic performance of an endoreversible ... regenerator and the intercooler are counter-flow and the heat conductances (heat transfer surface area and heat transfer coefficient product) of the hot-, cold- and consumer-side heat exchangers,...

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...

Báo cáo khoa học: "Eﬃcient Optimization of an MDL-Inspired Objective Function for Unsupervised Part-of-Speech Tagging" docx

... perform this optimization for each instance of (15) These optimizations could easily be performed in parallel for greater scalability     (13)    subject to the constraints w P(w | t) = and ... non-convex optimization problem for which we invoke a publicly available constrained optimization tool, ALGENCAN (Andreani et al., 2007) To carry out its optimization, ALGENCAN requires computation of ... In Proceedings of the ACL S Goldwater and T L Griﬃths 2007 A fully Bayesian approach to unsupervised part -of- speech tagging In Proceedings of the ACL M Hyder and K Mahata 2009 An approximate...

Báo cáo khoa học: Optimization of an Escherichia coli system for cell-free synthesis of selectively 15N-labelled proteins for rapid analysis by NMR spectroscopy pdf

... synthesis enhanced by T7 RNA polymerase Prior to the preparation of 15N-labelled samples of hCypA and analysis by NMR spectroscopy, the performance of the cell-free expression system was explored ... 2004 Cell-free synthesis of 15 N-labelled proteins (Eur J Biochem 271) 4087 Optimization of other conditions for in vitro protein synthesis Fig Cell-free synthesis of PpiB under control of phage ... chloride [31] Most importantly, the transfer of the 15N-label to other amino acids is insigniﬁcant for 18 of the amino acids and can be suppressed for [15N]Asp by use of a modiﬁed medium in which...

Báo cáo hóa học: " Optimization of an Electron Transport Layer to Enhance the Power Conversion Efﬁciency of Flexible Inverted " ppt

... thickness of the electron transport layer in order to prevent contact between the active layer and the ITO electrode with the lowest series resistance We optimized the seed layer thickness to 130 ... performance compared with that of a device consisting of a ZnO seed layer without ZnO NRs The optimization of the electron transport layer in the present work is one of the most important aspects ... thicknesses of ZnO seed layers and by introducing ZnO NRs A ZnO seed layer or ZnO NRs grown on the seed layer were used as an electron transport layer and pathway to optimize PV performance The optimized...

báo cáo hóa học:" Research Article Optimization of an Image-Based Talking Head System" ppt

... animation and image-based rendering of models [5] Image-based facial animation can achieve more realistic animations, while 3Dbased approaches are more ﬂexible to render the talking head in any view and ... drives the talking head The speech-driven talking head uses phoneme information from original sounds Text-driven talking head is ﬂexible and can be used in many applications, but the quality of speech ... terms of naturalness The Mean Opinion Score (MOS) of our system was about 3.7 in the subjective test Conclusions We have presented the optimization of an image-based talking head system The image-based...

Design optimization of small scale unmanned air vehicles

... DESIGN OPTIMIZATION OF SMALL- SCALE UNMANNED AIR VEHICLES NG TZE HUI THOMAS (B.Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN ENGINEERING DEPARTMENT OF MECHANICAL ... this thesis, new design methodologies have been developed for the design of small- scale unmanned air vehicle (UAV) and micro air vehicle (MAV) It is well known that the design of aircraft involves ... science of aviation As the boundaries of technology are pushed further with the launch of the biggest jet airliner A380 by Airbus, the conventional airplane is also shrinking with the advent of small- scale...

The effect of EGR rates on NOX and smoke emissions of an IDI diesel engine fuelled with Jatropha biodiesel blends

... reduction in NOX emission and increase in smoke, CO and HC emissions [3-5] Pradeep & Sharma [3] investigated the effects of hot EGR along with JB100 (100% Jatropha biodiesel) on engine performance and ... CO and unburned HC emissions The aim of the current study is to investigate the effect of EGR on performance parameters and exhaust emissions of an indirect injection (IDI) diesel engine fuelled ... discussion The results and discussion based on the effect of EGR rates on engine performance and emission characteristics of JB5, JB20 and DF, compared to DF without EGR (baseline) The engine...

Báo cáo hóa học: " Research Article Generalization of an Inequality for Integral Transforms with Kernel and Related Results" potx

... instead of Ms,t and we replace vi x with ui x , ui x with D∗a ui x , and q x with QD x Remark 2.21 In the case of L∞ fractional derivative, we will use the notation Ms,t instead of β α Ms,t and ... monotonicity of the means Journal of Inequalities and Applications Main Results Theorem 2.1 Let ui ∈ U v, K i 1, , and r x ≥ for all x ∈ a, b Also let I ⊆ R be an interval, let φ : I → R be convex, and ... means In Section 3, we give the proof of positive semideﬁniteness of matrices generated by the diﬀerence of that inequality obtained from the generalization of Mitrinovi´ -Peˇ ari´ inequality and...

Báo cáo khoa học: "Comparison of an enzyme-linked immunosorbent assay with serum neutralization test for serodiagnosis of porcine epidemic diarrhea virus infection" pdf

... enicrop tsniaga noitceted ydobitna eht rof ASILE na nI yticificeps gnivorpmi rof dna snoitcaer dnuorgkcab hgih gnivomer rof dengised saw DO detcerroc rof alumrof a ,suhT yticificeps wol dna dnuorgkcab ... hcae fo llew/lµ 001 gnidda yb detaoc erew )ASU ,lanoitanretnI cnuN eglaN( setalp retitorcim llew-69 fo swor llew-8 etanretlA )6.9 Hp ,reffub etanobracib Mm 05( reffub gnitaoc a ni lm/gµ 0.1 fo ... tcejorP 12 aeroK niarB eht yb dna ytisrevinU lanoitaN luoeS ,ecneicS yranireteV rof etutitsnI hcraeseR eht ,)1-100-00222-0002# tnarG FESOK( snoitadnuoF gnireenignE dna ecneicS aeroK eht fo margorP...

Xem thêm

Từ khóa: ahn j h song s k choi y d lee j s 2003 expression of an expansin gene is correlated with root elongation in soybean plant physiology 131 pp 985 997 solution of first order linear differential equation with constant coefficients how does the eer number determine the efficiency of an air conditioner an irreversible decrease in the number of functional nephrons 2—optimum performance of an air driven vacuum cleaner burning velocities of various fuels in air as a function of pressure for an equivalence ratio of 1 in cm s purposes of an air handling system ampacities of an insulated three conductor copper cable isolated in air ampacities of an insulated three conductor copper cable in isolated conduit in air ampacities of an insulated three conductor aluminum cable in isolated conduit in air when air resistance can be ignored the velocity in m s of an object falling from rest is an overview of hptlc a modern analytical technique with excellent potential for automation optimization hyphenation and multidimensional applications death of an old dog the confessions of an illustrator components of an emer Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thống Báo cáo quy trình mua hàng CT CP Công Nghệ NPV Nghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoại Nghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THz Biện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọ Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Phối hợp giữa phòng văn hóa và thông tin với phòng giáo dục và đào tạo trong việc tuyên truyền, giáo dục, vận động xây dựng nông thôn mới huyện thanh thủy, tỉnh phú thọ Nghiên cứu, xây dựng phần mềm smartscan và ứng dụng trong bảo vệ mạng máy tính chuyên dùng Thiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khí Chuong 2 nhận dạng rui ro BT Tieng anh 6 UNIT 2 Tăng trưởng tín dụng hộ sản xuất nông nghiệp tại Ngân hàng Nông nghiệp và Phát triển nông thôn Việt Nam chi nhánh tỉnh Bắc Giang (Luận văn thạc sĩ)Tranh tụng tại phiên tòa hình sự sơ thẩm theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn xét xử của các Tòa án quân sự Quân khu (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Chiến lược marketing tại ngân hàng Agribank chi nhánh Sài Gòn từ 2013-2015 Đổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt nam HIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀM