Dynamic Simulation Model of a Reciprocating Compressor in a Refrigerator
نویسندگان
چکیده
In this paper, a set of mathematical model to be used for predicting the dynamics of a reciprocating compressor in a refrigerator has been developed. Based on the conservation of energy and mass, the model was established by dividing a global compressor into ten controlling volumes. The model was validated by the experimental results from literatures. It could be calculated for the transient characteristics of the compressor by using of the model. From the simulated results, it was suggested that the coefficient of performance (COP) of a compressor which is obtained normally under the steady working state should be replaced by the mean value of integrating the transient function of COP (t) within a period of time from the beginning to the steady state in order to avoid declining the real value of COP.
منابع مشابه
Study of Valve Motion in Reciprocating Refrigerator Compressors based on the 3-D Fluidâ⇬╜structure Interaction Model
In this paper, valve motion in the refrigerator reciprocating compressor is studied based on a 3-D fluid-structure interaction model. Experiment of the P-V graph was carried out to validate the numerical model. Simulations showed that increased thickness of the valve would finally prolong delayed closure. It seems a little different from the traditional prediction that increased thickness would...
متن کاملAdvanced Numerical Simulation Model of Hermetic Reciprocating Compressors
A complete and advanced numerical simulation model of the thermal and fluid-dynamic performance of hermetic reciprocating compressors has been developed and is used in the optimization Electrolux compressor design. During the last few years several global experimental validations have been carried out. A detailed instrumentation of a commercial reciprocating compressor for household refrigerato...
متن کاملDevelopment of a compression system dynamic simulation code for testing and designing of anti-surge control system
In recent years, several research activities have been conducted to develop knowledge in analysis, design and optimization of compressor anti-surge control system. Since the anti-surge control testing on a full-scale compressor is limited to possible consequences of failure, and also the experimental facility can be expensive to set up control strategies and logic, design process often involves...
متن کاملAnalysis of Oil Pumping in the Hermetic Reciprocating Compressor for Household Refrigerators
For a hermetic reciprocating compressor of the household refrigerator, it is not economic to set a separate oil pump, because of cost and space demands. Its oil supply system is mainly promoted by a reed pump and the spiral groove on the shaft. When the compressor is operating, the oil climbs up the inner wall of the reed pump because of the centrifugal force. The height to which the oil could ...
متن کاملNumerical Analysis of the Dynamics of Reed Valves Taking into Account the Acoustic Coupling with the Fluid
The dynamics of reed valves of a reciprocating compressor is tightly coupled with the dynamics of fluid inside compressor ducts. A global model of a refrigerator compressor is developed taking into account the net flow through the ducts. Results show that reed valves vibrations influence the compressor cycle and can produce noise in the high frequency range.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014