کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4990806 1368115 2018 10 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Research PaperImproving quick cooling performance of a R410A split air conditioner during startup by actively controlling refrigerant mass migration
کلمات کلیدی
Control method; Outlet air; Refrigerant distribution;
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Research PaperImproving quick cooling performance of a R410A split air conditioner during startup by actively controlling refrigerant mass migration
چکیده انگلیسی

•The refrigerant distribution inside the air conditioner is measured.•The dynamic characteristics of the air conditioner after startup are investigated.•Active control strategies are proposed to improve quick cooling performance.•Increasing the refrigerant mass in the condenser can improve cooling performance.

This paper presents experimental investigations on the transient refrigerant migration during the start-up and shut-down of a R410A split air conditioner. The refrigerant distribution inside the main components of the air conditioner is measured by using “quick-closing valves” technique in which the components are isolated and the refrigerant is removed to be weighed. Results indicate that the refrigerant distribution rapidly changes within 300 s during start-up and becomes gently after 300 s. On the other hand, the refrigerant distribution rapidly changes within 60 s during shut-down and becomes gently after 60 s. In addition, the dynamic characteristics of the air conditioner after startup are also investigated at the standard cooling capacity rating condition. Several active control strategies for refrigerant mass migration during on–off cycling are proposed to improve quick cooling performance during startup. And it is verified that increasing the refrigerant mass in the condenser can improve cooling performance during startup.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 128, 5 January 2018, Pages 141-150
نویسندگان
, , ,