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2018 | OriginalPaper | Chapter

5. Exemplary Application of Concept

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Abstract

The chapter presents three different application cases of the developed concept and its models to underline their applicability and potentials. Although each application case follows the proposed application procedure, case specific features in terms of practical relevance and implication are emphasized individually per case and procedural step. Therefore, the generic character of the developed concept is tailored to meet the requirements of a components manufacturing (Sect. 5.1), a cooling water system (Sect. 5.2) as well as an integration into a learning factory (Sect. 5.3). The two industrial application cases base on real data, which is why many values have been altered by correction factors due to reasons of confidentiality.

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Footnotes
1
The superimposed load profile of all electrical components as well as compressed air and water of the same machine is shown by Figure 4.​18.
 
2
Provided that the underlying assumptions of the models itself hold and are valid, which is not further examined at this point due to their broad acceptance in their respective community.
 
3
3.6 MJ equal 1 kWh.
 
4
With a heat potential of \(\text{ Q }=39,\)13 MJ from Figure 5.4 a heat flow of \(\varDelta \dot{\text{ H }}=10.87\) kW follows.
 
5
Further technical restrictions related to chemical or biological challenges are neglected in the considerations.
 
6
This corresponds to the minimal required difference in temperature between the cold and hot pinch points.
 
7
For example due to break and maintenance times, shift changes and in general a discrete material flow.
 
8
Those cost estimates neglect additional incurred costs as well as any form of required invests.
 
9
H2 and H3 provide greater heat flows in this strategy compared to strategy 2 due to the absence of the defined media restriction.
 
10
For the sake of clarity the peripheral units such as pumps, filters, pipes, warm and cold water basins are omitted in Figure 5.9 but included in the modeling and evaluation of the results.
 
11
Two pumps and the fan of CT3 are speed controlled while the other fans and pumps are regulated by two-point controllers.
 
12
The calculation of the total water losses per CT neglects to take the natural air flow according to the chimney effect into account due to a lack of data about it. This explains why the water losses are zero in some periods per CT, because the air flow is linked to the operation of the fan, whereas in reality an additional natural air flow exists.
 
13
Other necessary model parameter regarding environmental, component, material or media properties have been neglected in the representation for reasons of clarity as well as confidentiality.
 
14
The spread between the switch on and off conditions for the fans is defined as 2 \(^{\circ }\text {C}\).
 
15
Exact measurement need to be performed to validate the stated magnitude of the water demands since the natural air flow through the CTs (when no fan is turned on) has been neglected.
 
16
Assuming a resolution of one day for the simulated data.
 
17
For example by means of defined levels of significance.
 
18
The strategy S5a has been left out of the representation because it examines an increased cold CW temperature of 22 \(^{\circ }\text {C}\).
 
19
The manual EVSM calculations use a fixed conversion factor to derive the energy demand per process, whereas the simulation uses the computed values from the interplay of machine demands and compressor operation.
 
20
Leading to a cooling demand from 42 \(^{\circ }\text {C}\) to 39 \(^{\circ }\text {C}\), since it is a hot process flow requiring additional cooling.
 
21
Due to the close temperature ranges of the processes a relatively low \(\varDelta T_{min}\) has been chosen for demonstration purposes.
 
22
Since the furnace runs 55 minutes of the overall time in which 20.9 W of the electrical heating demand is substituted by the (waste) heat from the compressor.
 
23
Pursuant to the assumptions stated by the strategy formulation.
 
Metadata
Title
Exemplary Application of Concept
Author
Denis Kurle
Copyright Year
2018
DOI
https://doi.org/10.1007/978-3-319-70440-1_5

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