Virtual Pressure Sensor for Electronic Expansion Valve Control in a Vapor Compression Refrigeration System

被引:4
|
作者
Sun, Jian [1 ]
Dong, Jin [1 ]
Shen, Bo [1 ]
Li, Wenhua [2 ]
机构
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA
[2] UTC Carrier Corp, Charlotte, NC 28269 USA
关键词
virtual pressure sensor; vapor compression refrigeration; model in the loop; electronic expansion valve; FLOW METER; CALIBRATION; WATER;
D O I
10.3390/en13184917
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Virtual sensor technology, which uses simulation models/algorithms to calculate a value to represent an unmeasured variable or replace a directly measured reading, has attracted many studies in the heating, ventilation, air conditioning and refrigeration (HVAC&R) industry. However, most virtual sensor technologies are developed for fault detection and diagnostics (FDD) purposes, which generally compare the virtual sensor values with actual measured values to detect if any fault occurred and identify the causes that led to the fault. It is rare to see studies focus on control performance of virtual sensors after substituting an actual sensor. This is particularly important for the system with no redundant sensor since a virtual sensor is the most effective way to operate the system in the desirable region when any sensor failure occurs. To address this gap, this paper develops a new virtual pressure sensor technology to substitute the actual pressure measurement for electronic expansion valve (EXV) control in a vapor compression refrigeration system by integrating compressor and valve characteristics. The control performance of this proposed virtual pressure sensor technology under various operating conditions is validated with experimental data. Closed loop EXV control simulations with the proposed virtual pressure sensor are conducted, and the results are analyzed.
引用
收藏
页数:13
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