کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4990885 1368115 2018 10 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Research PaperAir source heat pump with water heater based on a bypass-cycle defrosting system using compressor casing thermal storage
ترجمه فارسی عنوان
پمپ حرارتی منبع هوا با بخاری آب بر اساس یک سیستم یخ زدایی چرخه بای پس با استفاده از ذخیره سازی حرارتی پوشش کمپرسور
کلمات کلیدی
خنثی کردن؛ پوشش کمپرسور؛ ذخیره سازی گرم؛ مواد تغییر فاز؛ پمپ حرارتی؛ چرخه دور پس
Defrosting; Compressor casing; Heat storage; Phase change material; Heat pump; Bypass cycle;
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی

•ASHP with water heater using compressor casing thermal storage is developed.•The total defrosting time and consumption were lower than those of RCD.•10 L hot water with a temperature of 30 °C was obtained during the normal heating for 2.5 h.•The compressor casing temperature was reduced by 4.6 °C.

In this study, the defrosting system of an air source heat pump utilizing compressor casing heat storage combined with a hot gas bypass cycle (ASHP-CCHS-HGBC) was designed. The phase change material for defrosting was selected, the phase change heat storage exchanger was devised, and the ASHP-CCHS-HGBC test system was established. The power consumption, defrosting time, and the influence of the indoor exchanger outlet on the air temperature in the ASHP-CCHS-HGBC method were then compared with those of the reverse-cycle defrosting (RCD) and electric heating defrosting (EHD) methods. Experimental results reveal that the total defrosting time and consumption of the ASHP-CCHS-HGBC method was 100 s and 43.6 kJ, respectively. These values were lower by 10 s (9%) and 12.1 kJ (21.7%) relative to those of RCD. Moreover, the compressor suction temperature was increased by 10.1 °C during defrosting by ASHP-CCHS-HGBC. Under the normal heating operation for 2.5 h, 10 L hot water with a temperature of 30 °C was obtained, the compressor casing temperature was reduced by 4.6 °C. While defrosting, the air temperature of the indoor heat exchanger outlet declined to only 3.3 °C and exerted the least influence on the indoor temperature among those of the three defrosting methods.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 128, 5 January 2018, Pages 1420-1429
نویسندگان
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