Numerical investigation of condensation characteristics of a moist air-to-air plate-fin heat exchanger and experimental validation

Lei, Xiangshu; Lin, Zhijie; Wang, Ying; Li, Xinyang; Liu, Yingwen

doi:10.1016/j.ijheatmasstransfer.2022.122846

Cited by 8 publications

(2 citation statements)

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“…A cooler of HVIM is a significant component that transfers heat from water to air passing through the cooler finned tube as shown in Fig 1 . Commonly, the HVIM cooling system is using Totally Enclosed Water to Air Cooled (TEWAC) [ 21 ], and the plate-fin cooler is usually used [ 18 , 22 ]. The cooler’s fins are normally made of aluminum, and the cooled water is circulated through a tube.…”

Section: Introductionmentioning

confidence: 99%

“…Besides that, this model can give useful information for prognosis output by merging mechanistic knowledge of the system, equation of defect growth and condition monitoring data. The architecture of the motor cooler is illustrated in Fig 1 . A cooler of HVIM is a significant component that transfers heat from water to air passing through the cooler finned tube as shown in Fig 1 . Commonly, the HVIM cooling system is using Totally Enclosed Water to Air Cooled (TEWAC) [21], and the plate-fin cooler is usually used [18,22]. The cooler's fins are normally made of aluminum, and the cooled water is circulated through a tube.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of high voltage induction motor cooling system using linear regression mathematical models

et al. 2022

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Achieving reliable power efficiency from a high voltage induction motor (HVIM) is a great challenge, as the rigorous control strategy is susceptible to unexpected failure. External cooling is commonly used in an HVIM cooling system, and it is a vital part of the motor that is responsible for keeping the motor at the proper operating temperature. A malfunctioning cooling system component can cause motor overheating, which can destroy the motor and cause the entire plant to shut down. As a result, creating a dynamic model of the motor cooling system for quality performance, failure diagnosis, and prediction is critical. However, the external motor cooling system design in HVIM is limited and separately done in the past. With this issue in mind, this paper proposes a combined modeling approach to the HVIM cooling system which consists of integrating the electrical, thermal, and cooler model using the mathematical model for thermal performance improvement. Firstly, the development of an electrical model using an established mathematical model. Subsequently, the development of a thermal model using combined mathematical and linear regression models to produce motor temperature. Then, a modified cooler model is developed to provide cold air temperature for cooling monitoring. All validated models are integrated into a single model called the HVIM cooling system as the actual setup of the HVIM. Ultimately, the core of this modeling approach is integrating all models to accurately represent the actual signals of the motor cooler temperature. Then, the actual signals are used to validate the whole structure of the model using Mean Absolute Percentage Error (MAPE) and Root Mean Square Error (RMSE) analysis. The results demonstrate the high accuracy of the HVIM cooling system representation with less than 1% error tolerance based on the industrial plant experts. Thus, it will be helpful for future utilization in quality maintenance, fault identification and prediction study.

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Section: Introductionmentioning

confidence: 99%