کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4990506 | 1457106 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation of a mechanical vapour compression chiller at elevated chilled water temperatures
ترجمه فارسی عنوان
بررسی تجربی یک چیلر فشرده سازی بخار مکانیکی در دمای هوای بالا
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The performance of a Mechanical Vapour Compression (MVC) chiller is experimentally investigated under operating conditions suitable for sensible cooling. With the emergence of the energy efficient dehumidification systems, it is possible to decouple the latent load from the MVC chillers which can be operated at higher chilled water temperatures for handling sensible cooling load. In this article, the performance of the chiller is evaluated at the elevated chilled water outlet temperatures (7-17 °C) at various coolant temperatures (28-32 °C) and flow rates (ÎT = 4 and 5 °C) for both full- and part-load conditions. Keeping the performance at the AHRI standard as the baseline condition, the efficacy of the chiller in terms of compression ratio, cooling capacity and COP at aforementioned conditions is quantified experimentally. It is observed that for each one-degree Celsius increase in the chilled water temperature, the COP of the chiller improves by about 3.5% whilst the cooling capacity improvement is about 4%. For operation at 17 °C chilled water outlet temperature, the improvements in COP and cooling capacity are between 37-40% and 40-45%, respectively, compared to the performance at the AHRI standards. The performance of the MVC chiller at the abovementioned operation conditions is mapped on the chiller performance characteristic chart.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 123, August 2017, Pages 226-233
Journal: Applied Thermal Engineering - Volume 123, August 2017, Pages 226-233
نویسندگان
Kyaw Thu, Jayaprakash Saththasivam, Bidyut Baran Saha, Kian Jon Chua, S. Srinivasa Murthy, Kim Choon Ng,