Failure Detection Diagnostics for Thermofluid Systems

1992 ◽  
Vol 114 (4) ◽  
pp. 699-706 ◽  
Author(s):  
J. Wagner ◽  
R. Shoureshi
Keyword(s):  
Heat Pump ◽  
System Performance ◽  
Failure Detection ◽  
Anomalous Behavior ◽  
Dual Approach ◽  
Control Techniques ◽  
Model Free ◽  
Detection Strategy ◽  
Checking Scheme ◽  
Microprocessor Technology

Advances in microprocessor technology have enabled the application of modern control techniques and failure detection diagnostics to various processes for improved system performance. This paper presents experimental results for an on-board microprocessor-based failure detection package designed to assist in the diagnosis of heat pump failures. A model-free limit and trend checking scheme, and a model-based innovations detection formulation operate in parallel to detect anomalous behavior. This dual approach permits the study of tradeoffs between failure detection performance and method complexity. A series of typical anomalies are experimentally simulated in a heat pump, and results are presented to demonstrate the performance of each detection strategy.

Study on Ground Source Heat Pump System of Combined Office and Residential Building in Hot Summer and Warm Winter Region

2013 ◽  
Vol 732-733 ◽  
pp. 564-570 ◽  
Author(s):  
Ying Ning Hu ◽  
Ya Zhao Liu ◽  
Jun Lin ◽  
Yan Wang
Keyword(s):  
Heat Pump ◽  
Heat Balance ◽  
System Performance ◽  
Residential Buildings ◽  
Residential Building ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Warm Winter ◽  
Ground Source

A ground source heat pump system of combined office and residential buildings in hot summer and warm winter region is introduced. The system performance is studied through the experiment, and the performance of underground heat balance is analyzed by TRNSYS. The results show the superiority and applicability of the ground source heat pump system.

On the coupled system performance of transcritical CO2 heat pump and rankine cycle

2013 ◽  
Vol 49 (12) ◽  
pp. 1733-1740 ◽  
Author(s):  
Hongli Wang ◽  
Jingrui Tian ◽  
Xiujuan Hou
Keyword(s):  
Heat Pump ◽  
System Performance ◽  
Coupled System ◽  
Rankine Cycle

scholarly journals Link Failure Detection and Classification in Wireless Sensor Networks using Classification Method

2019 ◽  
Vol 8 (12) ◽  
pp. 1132-1135
Keyword(s):  
System Performance ◽  
Detection Rate ◽  
Sensor Node ◽  
Weak Link ◽  
Failure Detection ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Delivery Ratio ◽  
Link Failure ◽  
Packet Delivery

This paper develops a method to detect the failures of wireless links between one sensor nodes to another sensor node in WSN environment. Every node in WSN has certain properties which may vary time to time based on its ability to transfer or receive the packets on it. This property or features are obtained from every node and they are classified using Neural Networks (NN) classifier with predetermined feature set which are belonging to both weak link and good link between nodes in wireless networks. The proposed system performance is analyzed by computing Packet Delivery Ratio (PDR), Link Failure Detection Rate (LFDR) and latency report.

scholarly journals An experimental study of the effect of water bodies temperature on water heat pump performance

2018 ◽  
Vol 194 ◽  
pp. 01050 ◽  
Author(s):  
Amer Saloum ◽  
Vyacheslav I. Maksimov
Keyword(s):  
Heat Pump ◽  
System Performance ◽  
Formation Rate ◽  
Water Source ◽  
Ice Formation ◽  
Pump Performance ◽  
Effect Of Water ◽  
Pump Station ◽  
Negative Effect ◽  
Heat Exchange Efficiency

The purpose of this research is to study the effect of water temperature change in the reservoir on water heat pump performance. An experimental analyse is done on the heat pump station which depends on water as a heat source. The experimental results confirm that the ice formation has a negative effect on the heat exchange efficiency, and the increase in water source temperature slow down the ice formation rate which causes an appositive effect on the system performance.

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