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A test facility to measure heat transfer performance of advanced condenser tubes

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Published by Naval Postgraduate School in Monterey, California .
Written in English


  • Mechanical engineering

Book details:

ID Numbers
Open LibraryOL25358444M

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Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis and Dissertation Collection A test facility to measure heat transfer performance. This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation. A test facility to measure heat transfer performance of advanced condenser tubes. By II Andrew Conrad Beck. Download PDF (8 MB) Abstract. Approved for public release; distribution is unlimitedAn experimental test facility capable of investigating plain and enhanced condenser tube heat transfer characteristics was designed and built. Author: II Andrew Conrad Beck.   Assessment of condenser performance is generally performed by two methods: correction method (related to heat transfer surface area based on known CW flow rate and temperatures) and effectiveness.

  From the typical local heat transfer coefficients, it can be seen that the top of the condenser tube is a much more efficient heat transfer surface. In this section, the local heat transfer characteristics are analyzed separately for the top and bottom for test conditions with the same inlet air . Heat Transfer Characteristics of separate effects test facilities with vertical single tube and four tube bundle condensers. performance of the PCCS condenser is, thus, vital to the safety of. A number of investigators have carried out experimental tests and analyses of the heat transfer performance of finned-tube sCO 2 gas coolers. Majority of this work was focused only on steady-state analyses [1–4].All of these authors use ε-NTU or LMTD (i.e., lumped method and distributed method) which has limitations, especially when it comes to modeling of rapidly varying thermophysical.   SGTF is a test facility to conduct tests on sodium heat exchangers for SFRs (Suresh Kumar et al., ). Heat transfer experiments were conducted with the model steam generator to estimate the heat transfer capability of the steam generator under nominal conditions and to quantify the margin in heat transfer area present in the steam generator.

These machines are capable of testing tubes at the high test level mandated by the application and also the throughput rate required to match some large quantity heat exchanger tube orders. At high throughput rates, untested ends can be limited to 25mm to . Chiller performance and efficiency relate directly to its ability to transfer heat, which begins with clean evaporator and condenser tubes. Large chillers contain several miles of tubing in their heat exchangers, so keeping these large surfaces clean is essential for maintaining high-efficiency performance. Keep tubes clean for efficient heat transfer Heat transfer efficiency has the greatest single effect on chiller performance, so clean heat transfer is fundamental to maintaining high efficiency. Contaminants such as minerals, scale, mud, algae and other impurities increase thermal resistance and reduce overall performance. higher the heat transfer coefficient. In the same, the cleaner the cooling water pipes, the higher the heat transfer coefficient, and vice versa. The cooling water temperature was not likely to be exactly the design value (eg. 20℃) when the condenser performance test carried on. Neither was the cooling wa-ter .