کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7915873 | 1511034 | 2016 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterisation and optimisation of flexible transfer lines for liquid helium. Part II: Thermohydraulic modelling
ترجمه فارسی عنوان
شناسایی و بهینه سازی خطوط انتقال انعطاف پذیر برای هلیوم مایع. قسمت دوم: مدل سازی ترمو هیدرولیک
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کلمات کلیدی
هلیوم مایع خط انتقال کریوژنیک، انتقال حرارت کریوژنیک، افت فشار دو فاز، 00-01، 99-00،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
In part one of this publication experimental results for a single-channel transfer line used at liquid helium (LHe) decant stations are presented. The transfer of LHe into mobile dewars is an unavoidable process since the places of storage and usage are generally located apart from each other. The experimental results have shown that reasonable amounts of LHe evaporate due to heat leak and pressure drop. Thus, generated helium cold gas has to be collected and reliquefied, demanding a huge amount of electrical energy. Although this transfer process is common in cryogenic laboratories, no existing code could be found to model it. Therefore, a thermohydraulic model has been developed to model the LHe flow at operating conditions using published heat transfer and pressure drop correlations. This paper covers the basic equations used to calculate heat transfer and pressure drop, as well as the validation of the thermohydraulic code, and its application within the optimisation process. The final transfer line design features reduced heat leak and pressure drop values based on a combined measurement and modelling campaign in the range of 0.112 < pin < 0.148 MPa, 190 < G < 450 kg/(m2 s), and 0.04 < xout < 0.12.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryogenics - Volume 79, October 2016, Pages 53-62
Journal: Cryogenics - Volume 79, October 2016, Pages 53-62
نویسندگان
N. Dittmar, Ch. Haberstroh, U. Hesse, M. Krzyzowski,