Related Experiment Video
Updated: Jan 24, 2026
14:33
Optimize Flue Gas Settings to Promote Microalgae Growth in Photobioreactors via Computer Simulations
Published on: October 1, 2013
14.9K
Optimization of Cathodic Protection Design for Pre-Insulated Pipeline in District Heating System Using Computational
Min-Sung Hong1, Yoon-Sik So2, Jung-Gu Kim3
1School of Advanced Materials Engineering, Sungkyunkwan University, 300 Chunchun-Dong, Jangan-Gu, Suwon 440-746, Korea. smith803@skku.edu.
Materials (Basel, Switzerland)
|June 2, 2019
Summary
Cathodic protection (CP) effectively prevents pipeline corrosion. Computational analysis, considering environmental factors and IR drop, is crucial for optimizing CP design in insulated district heating pipelines.
Area of Science:
- Corrosion Engineering
- Materials Science
- Computational Modeling
Background:
- Cathodic protection (CP) is vital for controlling corrosion in buried pipelines.
- Thermally insulated coatings on district heating pipelines complicate CP application.
- Traditional design methods (theoretical calculations, field tests) are insufficient for reliable CP.
Purpose of the Study:
- To test and optimize Cathodic Protection (CP) design for pre-insulated pipelines.
- To evaluate the impact of environmental factors like temperature and coating defects on CP effectiveness.
- To verify CP design using computational analysis.
Main Methods:
- Theoretical calculations and field tests were initially performed.
- Computational analysis was employed to simulate CP performance.
- CP design was re-evaluated and optimized by incorporating IR drop considerations.
Main Results:
- Initial simulations based solely on theoretical methods failed to meet CP criteria.
- Environmental factors (temperature, coating defect ratio) were analyzed.
- Optimized CP design, accounting for IR drop, successfully met CP criteria for defective pipelines.
Conclusions:
- Computational analysis is essential for reliable CP design in insulated pipelines.
- Accounting for IR drop is critical for effective CP in district heating systems.
- Optimized CP strategies ensure pipeline integrity despite insulation and environmental challenges.
Related Concept Videos
01:25Design Example: Traverse Angle Computations
316
Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
316
01:23Insulation Coordination
559
Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times...
559
01:19Conductors and Insulators
10.6K
Some materials may easily let electrical charges pass through them, while others obstruct their flow. The former are called conductors and the latter insulators. The atomic structures of materials determine whether they are conductors or insulators of electricity.
Most metals are conductors. Their atomic configuration is such that one or more electron(s) are loosely bound to the nucleus in each atom. Thus, a sea of mobile electrons are available in them, known as free electrons. Their easy...
Most metals are conductors. Their atomic configuration is such that one or more electron(s) are loosely bound to the nucleus in each atom. Thus, a sea of mobile electrons are available in them, known as free electrons. Their easy...
10.6K
01:22Thermal Insulation in Masonry Walls
510
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
510
02:01pre-mRNA Processing
57.2K
In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
57.2K
02:45Responses to Heat and Cold Stress
14.7K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
14.7K