توسعه روابط عملکردی کندانسور خودرو بر اساس شبیه سازی عددی و طراحی آزمایش

نوع مقاله : مقاله پژوهشی

نویسندگان

1 مجتمع دانشگاهی مکانیک دانشگاه صنعتی مالک اشتر- گروه تبدیل انرژی

2 گروه تبدیل انرژی-مجتمع مکانیک - دانشگاه صنعتی مالک اشتر - شاهین شهر- اصفهان

چکیده

در مطالعه حاضر عملکرد حرارتی سمت هوای کندانسور (مبدل حرارتی فشرده) خودرویی در حالت سه‌بعدی و بر اساس طراحی آزمایش (DOE)، شبیه‌سازی عددی شده است. بدین منظور مطالعه و بررسی بر پارامترهای هندسی مؤثر همچون گام پره، گام لوورها، زاویه لوورها، ارتفاع و عرض پره و تأثیراتشان بر عملکرد حرارتی کندانسور معطوف شده است.  برای پارامترهای مؤثر بر عملکرد مبدل حرارتی فشرده از جمله ضریب انتقال حرارت سمت هوا و افت فشار استاتیکی و دیگر پارامترهای حرارتی بر اساس طراحی آزمایش، روابطی استخراج شده است که با کمترین خطا، هزینه محاسباتی را کاهش می‌دهد. نتایج به‌صورت کمی نشان می­دهند که با افزایش طول پره، زاویه و گام لوور و همچنین کاهش گام پره، میزان انتقال حرارت تا حدود 42% افزایش می­یابد. همچنین نتایج مربوط به مشخصه­های انتقال حرارت و افت فشار نسبت به نتایج عددی اخیر برای دفع حرارت تا 1/8%، برای ضریب انتقال حرارت به‌طور میانگین تا 5% و برای افت فشار تا 5/10% بهبود یافت. علاوه بر موارد هندسی، مطالعات پارامتری از جمله اثر دمای محیط، دمای دیواره حرارتی کندانسور و سرعت خودرو بر عملکرد حرارتی و افت فشار خودرو نیز بررسی گردیده است.

کلیدواژه‌ها

عنوان مقاله [English]

Automotive Condenser Operational Relationships Development Based on Numerical Simulations and the Design of Experiment

نویسندگان [English]

  • majid alipour 1
  • Ghadiri Modarres, Fatemeh Ghadiri Modarres, Fatemeh 2
1 Mechanical Engineering Department Maleke Ashtar University of Tecnology
2 IHU
چکیده [English]

In the present study, the thermal performance of the air-side compact heat exchanger of an automotive condenser in the three-dimensional model has been numerically simulated based on the design of experiment (DOE). For this purpose, the effective geometrical parameters such as fin pitch, louvre pitch, louvre angle, fin height and fin width and their effects on condenser thermal performance are studied and investigated. Finally, for parameters effective on the compact heat exchanger operation, such as air-side heat transfer coefficient, static pressure drop and other thermal parameters, relationships are extracted based on the design of experiment which decrease the computational cost with the least error. The results show quantitatively that by increasing the fin length, louver angle, louver pitch and decreasing the fin pitch, the heat transfer rate increases by about 42%. Also, the results show that the heat dissipation, heat transfer coefficient and pressure drop, have improved by 8.1%, 5% and 10.5% respectively compared to recent numerical results. Eventually parametric studies including the effect of ambient temperature, condenser wall temperature and vehicle speed on thermal performance and pressure drop are presented.

کلیدواژه‌ها [English]

  • Automotive Condenser
  • Improved Thermal Performance
  • Design of Experiment (DOE)
  • Compact Heat Exchanger
  • Louver-Fin
  • Air-Side

مراجع

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فایل ها

سابقه مقاله

  • تاریخ دریافت: 10 مهر 1399
  • تاریخ بازنگری: 15 آذر 1400
  • تاریخ پذیرش: 09 شهریور 1400
  • تاریخ انتشار: 01 خرداد 1400

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