synthesis of mass exchange networks—an algebraic approach

... speed that will offer optimal synthesis of this network This is not executed in this work as highly complex nature of the operating curve is the main barrier Due to unavailability of operating curves ... implemented into the model formulation This, however, necessitates the availability of performance curves of compressor systems in used today such as General Electric’s BCL and MCL series used ... inevitable that the accuracy of the model is compromised to some extent, though minor Therefore, as an improvement and to better reflect the actual efficiencies of compressor systems, a performance...

Ngày tải lên: 13/10/2015, 16:41

... capacities The cost of the SSTC is the sum of the incremental costs of its movers, which depend on the streams and flow capacities 85    Chapter Work Exchange Networks Synthesis The costs of helper motor ... or electricity While HENS involves the exchange of heat only, WENS involves the exchange of work only, or both heat and work Since the work requirements of compressors and turbines depend heavily ... ($/kWh) of running the utility compressors, pM ($/kWh) the unit cost of running the SSTC motor, phs the unit cost ($/K) of operating the final heater of stream s, and pcs the unit cost ($/K) of operating...

Ngày tải lên: 13/10/2015, 16:41

... Let Lq and Vq are liquid and vapor phase mass flow rate of MR stream q Let zr is the composition of MR stream where r is the component of MR stream Then, mass and component balance tell us,   mmr ... at entrance to or exit from heat exchange However, these constraints not ensure feasible heat exchange among cold and hot streams because of nonlinear nature of cold and hot composite curves16 ... H prR _   Tpr _  (3.14) where, mpr is the mass flow rate of propane in PR cycle The correlation of heat capacitytemperature and correlation of residual enthalpy can be adopted from Perry’s...

Ngày tải lên: 13/10/2015, 16:41

... “Work Exchange Network Synthesis or WENS It is a useful and direct extension of the well known Heat Exchange Network Synthesis (HENS)15,16 While the literature has studied networks for heat exchangers15,16, ... heuristics-based methodology may not offer the most economical network Therefore, there is a need for a cost-based structural optimization approach for work exchange network synthesis as presented in this ... alternate approach would be to develop an operational optimization formulation based upon a simpler model built from general arrangements and flow schematics of the AP-XTM system This approach...

Ngày tải lên: 13/10/2015, 16:41

... has the capacity of transporting an equivalent of several billion cubic feet of NG It was reported in year 2008 that at least 27.8% of international trade in NG is in the form of LNG and continued ... promising source of energy to power the future economy NG consists predominantly of methane (approximately 90%) with small amounts of ethane, propane and nitrogen as well as trace quantities of heavier ... optimization of LNG processes are necessary and has been gathering the attention of academic and industrial researchers all around the world In view of this, it is, therefore, in the interest of this...

Ngày tải lên: 13/10/2015, 16:41

... Mary S Beattie, MD Assistant Professor of Medicine Adrienne Green, MD Associate Professor of Medicine Toby A Maurer, MD Associate Professor of Medicine; Chief of Dermatology, San Francisco General ... the Division of General Internal Medicine, Department of Medicine and is sponsored by the Office of Continuing Medical Education, University of California, San Francisco School of Medicine EDUCATIONAL ... Associate Professor of Clinical Medicine; Director, Internal Medicine Clerkships Salim D Islam, MD Assistant Professor of Anesthesia and Perioperative Care; Medical Assistant Chief, Director of Quality,...

Ngày tải lên: 14/03/2014, 14:20

... collection of AQL rules an AQL query Fig shows portions of an AQL query As can be seen, the basic building block of AQL is a view: A logical description of a set of tuples in terms of either the ... sequence of phases, each of which consists of one or more rules Each phase applies its rules from left to right over an input sequence of annotations and generates an output sequence of annotations ... 2008) for a detailed description of the types of plan the optimizer considers, as well as an experimental analysis of the performance benefits of different parts of this search space Several parallel...

Ngày tải lên: 23/03/2014, 16:20

... 150 200 Number of exchange rounds Optimal, dmax = Optimal, dmax = Optimal Optimal, dmax = 64 Figure 3: Optimal performance of NeMo with different dmax 0 200 400 600 800 Number of exchange rounds ... symbol of degree 1), the degree of all the NM symbols will become 2k after k exchanges under the optimal case Therefore the maximal number of OM symbols − recovered at the sink after K exchange ... persistence Error rate of recovered OM symbols 0.12 0.08 0.06 0.8 0.6 0.04 0.4 0.02 0.2 0 100 200 300 400 500 600 700 800 100 200 300 400 500 600 Number of exchange rounds Number of exchange rounds...

Ngày tải lên: 21/06/2014, 17:20

... .215 LIST OF FIGURES XV Figure 5.61: View of the Cathedral of Saint Peter ruins The larger Phase C stones have been built on top of the Phase A stones, of which only one course of large ashlars ... n.17) .226 Figure 5.69: A – Seal of Eustace; B – Sketch of Gautier I’s seal; C – Seal of Hugh; D – Sketch of Hugh’s seal; E – Sketch of Gautier II’s seal; F – Sketch of Julianne and Adhémar de Lairon’s ... Archaeology special volume ‘The Cultural Biography of Objects,’ inspired by Kopytoff’s biographical approach, is a collection of papers offering different approaches to object biographies and use various...

Ngày tải lên: 22/12/2014, 18:04

... discourse of English sales presentation in terms of register and coherence The register of discourse is investigated in terms of field of discourse, tenor of discourse and mode of discourse Field of ... frequency of occurrence of types of adjectives in English sales presentations Chart 6: The frequency of occurrence of types of adverbs in English sales presentations Figure 1: Mode of discourse ... The frequency of occurrence of four kinds of sentences in English sales presentations Chart 4: The frequency of occurrence of subject and other parts of speech as first element of sentences in...

Ngày tải lên: 02/03/2015, 14:20

... range of users 3.1.3 Mode of discourse of English sales presentations * Macro mode of discourse of English sales presentations From the macro point of view, mode is defined as the function of the ... calculation of variables of register and coherence‟s relevant factors of discourse of sales presentations I THEORETICAL FRAMEWORK This study looks at discourse of English sales presentation in terms of ... tenor of discourse and mode of discourse, of English sales presentation? - How coherence of discourse of English sales presentations is created via relevance and discourse structure? 1.3 Scope of...

Ngày tải lên: 10/08/2015, 19:46

... paper only looks at register of discourse of sales presentation and coherence of discourse of sales presentation in terms of relevance and discourse structure Aims of the Study Due to the constraints ... aspects of sales presentations, this study aims at: - Investigate register of the discourse of English sales presentations with three aspects: field of discourse, tenor of discourse and mode of discourse ... tenor of discourse and mode of discourse, of English sales presentation? - How coherence of discourse of English sales presentations is created via relevance and discourse structure? Scope of the...

Ngày tải lên: 10/08/2015, 19:46

Ngày tải lên: 18/02/2014, 11:20

... total delay of the filter parts of the different FBs is given, as well as the number of distinct filter coefficients to optimize When the number of channels is doubled, the transition bands of the masking ... Figure The transition band of Pa (z) (and Ps (z)) can be selected to In the case of linear-phase FIR filters, this means that the sum of the zerophase frequency responses of the filter pair is equal ... properties of the proposed FBs useful in the design procedure Proofs of the first four properties are given in the appendix The fifth property is shown in Section (1) The magnitude responses of Pa (z)...

Ngày tải lên: 22/06/2014, 23:20

Ngày tải lên: 06/11/2012, 10:35

... Vietnam national University, Hanoi College of Foreign Languages Department of Postgraduate Studies A study oF An alternative approach to teaching essay writing to TOEFL learners (Nghiên...

Ngày tải lên: 06/11/2012, 10:35

... and weak points of both product and process approach discussed above, a new approach of teaching is raised to make use of the strong points and limit the weak points of both approaches Firstly, ... require a variety of topics or patterns of essay organization but test takers must have the skill of solving the writing task under the pressure of time Within 30 minutes for an essay of about 250 ... communicative approach, with its emphasis on task-oriented activities that involves the exchange of information and the free use of language without undue concern for mistakes Features and limitations of...

Ngày tải lên: 06/11/2012, 10:35

... mother of success”, therefore, they will be never successful if they never taste the feeling of losing In summary, parents are the very important and necessary teachers at the beginning of life ... be different from their parents’ Firstly, when children are small, their parents can take care of them closely But when they grow up, they go to school, have friends and teachers, so they can ... the children may not keep up with their friends in class Secondly, nowadays children have a lot of opportunities to access the academic world such as they have the Internet that their parent didn’t...

Ngày tải lên: 06/11/2012, 10:35

... 2005) are examples of such attempts The present work also uses the concept of complex networks to develop a platform for a holistic analysis as well as synthesis of the distribution of the consonants ... studies of PlaNet In section we provide a simplified theoretical explanation of the analytical results ob- Figure 1: Illustration of the nodes and edges of PlaNet tained In section we present a synthesis ... Degree distribution of PlaNet for the set VL The figure in the inner box is a magnified version of a portion of the original figure Degree Distribution of PlaNet The degree of a node u, denoted...

Ngày tải lên: 08/03/2014, 02:21

... Optimization of other conditions for in vitro protein synthesis Fig Cell-free synthesis of PpiB under control of phage k promoters Identical volumes of reaction products were loaded into lanes of a 15% ... effect of transamination is a reduction of the degree of 15N-labelling in the amino acid of interest In the case of [15N]Gly, much of the label appeared to have been trapped in an amide group of ... concentrations of MgCl2 and template DNA were found to vary with different batches of S30 extract Concentration of the S30 extract by dialysis against a solution of PEG 8000 [2] reduced the volume of the...

Ngày tải lên: 16/03/2014, 18:20