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The target

FIgura 6.5 Plotting the hot and cold composite curves together allows the targets for hot and cold utility to be obtained. [Pg.164]

Where the cold composite curve extends beyond the start of the hot composite curve in Fig. 6.5a, heat recovery is not possible, and the cold composite curve must be supplied with an external hot utility such as steam. This represents the target for hot utility (Q niin)- For this problem, with ATn,in = 10°C, Qnmin 7.5 MW. Where the hot composite curve extends beyond the start of the cold composite curve in Fig. 6.5a, heat recovery is again not possible, and the hot composite curve must be supplied with an external cold utility such as cooling water. This represents the target for cold utility (Qcmin)- For this problem, with AT in = 10°C, Qcmm = 10-0 MW. [Pg.165]

These rules are both necessary and sufficient to ensure that the target is achieved, providing the initialization rule is adhered to that no individual heat exchanger should have a temperature difference smaller than... [Pg.169]

Details of how this design was developed in Fig. 6.9 are included in Chap. 16. For now, simply take note that the targets set by the composite curves are achievable in design, providing that the pinch is recognized, there is no transfer of heat ac ss it, and no inappropriate use of utilities occurs. However, insight into the pinch is needed to analyze some of the important decisions still to be made before network design is addressed. [Pg.169]

Example 7.2 For the process in Fig. 6.2, calculate the target for network heat... [Pg.219]

Increasing the chosen value of process energy consumption also increases all temperature differences available for heat recovery and hence decreases the necessary heat exchanger surface area (see Fig. 6.6). The network area can be distributed over the targeted number of units or shells to obtain a capital cost using Eq. (7.21). This capital cost can be annualized as detailed in App. A. The annualized capital cost can be traded off against the annual utility cost as shown in Fig. 6.6. The total cost shows a minimum at the optimal energy consumption. [Pg.233]

Now scan a range of values of Ar ,in and calculate the targets for energy, number of units, and network area and combine these into a total cost. The results are given in Table 7.4. [Pg.235]

Note one further point fi om Fig. 16.7. The number of units is 7 in total (including the heater and cooler). Referring back to Example 7.1, the target for the minimum number of units was calculated to be 7. It therefore appears that there was something in our procedure... [Pg.369]

It is in fact the tick-off heuristic that steered the design toward the minimum number of units. The target for the minimum number of units was given by Eq. (7.2) ... [Pg.370]

Before any matches are placed, the target indicates that the number of units needed is equal to the number of streams (including utility streams) minus one. The tick-off heuristic satisfied the heat duty on one stream every time one of the units was used. The stream that has been ticked off is no longer part of the remaining design problem. The tick-off heuristic ensures that having placed a unit (and used up one of our available units), a stream is removed from the problem. Thus Eq. (7.2) is satisfied if eveiy match satisfies the heat duty on a stream or a utility. [Pg.370]

The philosophy in the pinch design method was to start the design where it was most constrained. If the design is pinched, the problem is most constrained at the pinch. If there is no pinch, where is the design most constrained Figure 16.9a shows a threshold problem that requires no hot utility, just cold utility. The most constrained part of this problem is the no-utility end. Tips is where temperature differences are smallest, and there may be constraints, as shown in Fig. 16.96, where the target temperatures on some of the cold... [Pg.371]

Figure 16.215 shows an alternative match for stream 1 which also obeys the CP inequality. The tick-off" heuristic also fixes its duty to be 12 MW. The area for this match is 5087 m , and the target for the remaining problem above the pinch is 3788 m . Tlius the match in Fig. 16.216 causes the overall target to be exceeded by 16 m (0.2 percent). This seems to be a better match and therefore is accepted. [Pg.388]

Figure 16.23a shows the complete design, achieving maximum energy recovery in one more unit than the target minimum due to the inability to tick off streams below the pinch. [Pg.389]

The large number of matches assumed in Eq. (E.2) is not a complication in establishing the target. This is so because the additive property shows that the total fractional number of shells is independent of how many vertical sections are used to divide a given heat exchange profile. [Pg.439]

This is lower than the maximum area per shell. f. The target for the number of shells is given by... [Pg.445]

Wells may be drilled at a constant angle to the target or dropped off to a lower angle through the reservoir section. To build, maintain or drop the deviation angle stabilisers are run in the bottom hole assembly (Fig. 3.15). A change in deviation used to require a round trip to change the position of those stabilisers in the bottom hole assembly. In recent years, adjustable, hydraulically activated stabilisers have been developed. The... [Pg.48]

When considering secondary or enhanced oil recovery, it is important to establish where the remaining oil lies. Figure 8.21 shows an example of where the remaining oil may be, and the appropriate method of trying to recover it. The proportions are only an example, but such a diagram should be constructed for a specific case study to identify the target oil . [Pg.210]

Transportable high-current KEC-25M betatron on 25 MeV energy with power dose of radiation on 1 m away from the target of 30 Gr/min is the source of penetrating radiation intended for flaw detection in field conditions and radiation visualization of dynamic processes [2]. [Pg.514]

High-current EC-50 betatron with maximal energy of accelerated electrons equaled to 50 MeV and radiation dose power 220 Gr/min on the distance of Im from the target [3] was made for experimental physical researches and activated analysis. [Pg.514]

Dose power of radiation Im away from the target 30 220... [Pg.514]


See other pages where The target is mentioned: [Pg.159]    [Pg.160]    [Pg.169]    [Pg.228]    [Pg.228]    [Pg.229]    [Pg.229]    [Pg.231]    [Pg.321]    [Pg.322]    [Pg.328]    [Pg.335]    [Pg.370]    [Pg.381]    [Pg.381]    [Pg.385]    [Pg.388]    [Pg.389]    [Pg.401]    [Pg.402]    [Pg.441]    [Pg.445]    [Pg.448]    [Pg.449]    [Pg.52]    [Pg.30]    [Pg.346]    [Pg.569]    [Pg.570]    [Pg.656]   


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Algorithm for the Heat Exchange Area Target

Algorithm for the Number-of-Shells Target

Alignment of Targetable Molecular Features Across the Human Kinome

Antibiotics targeting the ribosome

Antitumor Activity and DNA as the Target

Binding to the Same Target Site

Biochemistry of the Target and Resistance

Biologicals Are the Low Hanging Fruit of Genomics-Based Target Discovery

Blocking Contact Structure of the Photoconductive Target

Cellular Activity Should Require a Certain Affinity for the Target Enzyme

Cellular Targets for Drug Delivery in the Kidney

Drug Targeting Strategies in the Clinic

Drug Targeting The Next Generation in Cancer Treatment

Drug Targeting to the Liver

Drug at the target site

Effects of Antisense Targeting to the Proximal Tubule

Enrolling the Client Targeting, Eligibility, and Intake

Enthalpies of the Target Species

Eukaryotic Proteins Targeted for Secretion Are Synthesized in the Endoplasmic Reticulum

Exerting an Effect at the Target

Finding the right target groups

From Population to Beneficiary The Stages of Targeting

Genomics The First Link between Sequences and Drug Targets

Hormone Effects on the Target Cell

Hydroxyphenylpyruvate Dioxygenase (HPPD) - the Herbicide Target

Interactions at the Target Cell

Is the target correct

Labeling of the Target Protein

Learn Identifying Strategies and Targets for the Next Design Stage

Miss-the-Target (MtT) Risk Models

Multicomponent Reactions in the Synthesis of Target Molecules

New Nonpeptide-Binding GPCRs as Targets for Diabetes and the Metabolic Syndrome

Nontoxic Mode of Action Against the Target Pest

Organometallics Targeted to Specific Biological Sites the Development of New Therapies

Pharmacodynamics At the Drug Target

Physicochemistry and the Off-Target Effects of Drug Molecules

Planning from the Target Structure

Polymeric Micelles for the Targeting of Hydrophobic Drugs

Possible Target Groups, the Role of Safety Nets, and Complementary Policies

Preparation of the Target

Principle 4 Involve the target audience

Processes at the Target Surface

Radiation exchange at the target surface

Raising the Tower Pressure Target

Reaching the Final Target A Robust Commercial Process

Release or Activation of D at the Target Site

STRUCTURE OF THE TARGET MOLECULE

Safener Interactions with the Herbicide Target Site

Setting the target weights using acoustic distances

Spot size on the target

Strategies External to the Target Structure

Synthetic targets, and the

Target Genes of the NR4A Subfamily

Target Safety Assessment for Biopharmaceuticals Targeting the Immune System

Target Sites and Mechanisms of NO Action in the Carotid Body

Target Validation The Foundation of Drug Discovery

Target composition of the bituminous mixture

Target of the study

Targeting Drugs to the Endothelial Cell

Targeting Outcomes of the GMI Program, Bulgaria

Targeting specific cells in the kidney

Targeting the Lungs During Nose Breathing

Targeting the Lungs with Therapeutic Aerosols

Targeting the Nuclear Receptor-Cofactor Interaction

Targeting the Transcriptional Hub P-Catenin Using Stapled Peptides

Targeting to the Golgi apparatus

Targeting to the Proximal Tubular Cell

The Acoustic Space Target Function Formulation

The Biological Target Potential of Organometallic Steroids

The CAPRI Targets

The Challenge — Molecularly Targeted Therapies and New Paradigms for Clinical Trials

The Chimaeric Origin of Mitochondrial Protein Import and Targeting

The Clinical Effects of Targeting

The G Protein Cycle Is a Target for Certain Bacterial Toxins

The Independent Feature Target Function Formulation

The Intersection of Ligandability and Human Disease Target Space

The Learning and Evolution of Medicinal Chemistry against Kinase Targets

The Molecular Messenger and Nonmessenger Target System

The Proteasome as a Drug Target

The Target Cell

The Target Microorganism

The Target Range

The Targeting Activity of Co-chaperones

The Targeting Approach

The Ubiquitin-Proteasome System as a Target for Drug Development

The complete set of target states

The target quantity

Therapeutic Targeting of the CXCR3 Receptor

Therapies targeting the airways

Therapies targeting the alveoli

Thermodynamic Parameters of the Target Species

Thyroid hormone production, transport and uptake by the target cells

Unique De-wetting Hot Spots in the Target Protein Provide a Blueprint for Drug Design

Using RNAi to block targeted steps in the flavonoid pathway

What are the target outcomes of mechanical engineering education

Where to Sample the Target Population

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