کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
790100 1466405 2015 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A state-space dynamic model for vapor compression refrigeration system based on moving-boundary formulation
ترجمه فارسی عنوان
یک مدل پویای حالت فضایی برای سیستم تبرید فشرده سازی بخار بر اساس فرمول حرکتی مرزی
کلمات کلیدی
سیستم تبرید، فضای دولت، مدل پویا فرمول مرز متحرک سیستم رفاهی، فضای دولت، مدل پویا فرمول بندی با محدودیت های حرکتی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• A dynamic model of refrigeration system was developed with moving-boundary formulation.
• The model is transformed into a state space form by using vector-matrix notation.
• Errors of model results compared with experimental data are mostly less than 10%.

A transient response model for vapor compression refrigeration system has been developed in the paper. The system model contains four sub-models representing condenser, evaporator, compressor and electronic expansion valve (EEV). The condenser and the evaporator are developed based on the moving-boundary formulation. Through linearization, these dynamic models are transformed into state-space representation which is expressed in the form of matrix. The compressor and EEV adopt steady models because their thermal inertia is much smaller compared with the heat exchangers (i.e., condenser and the evaporator). The system model has been validated by experiment in terms of step change of EEV opening degree and heat load as well as ramp increase of inlet temperature of coolant oil of condenser. The results show that the model simulations have a good agreement with the experimental data. The simulation errors compared with the experimental data are mostly less than 10%. Since the model proposed in this study is expressed in the form of state-space matrix, they are featured by strong portability and high computation efficiency. It allows us to investigate the thermal dynamic characteristics of a refrigeration system under any complicated conditions and develop excellent control schemes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 60, December 2015, Pages 174–189
نویسندگان
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