Experimental study on microbial fouling characteristics of the plate heat exchanger

Fouling characteristic of plate heat exchanger was studied through the experimental system, with the Songhua River water as working fluid. Several water quality parameters: pH value, conductivity, dissolved oxygen, turbidity, hardness, alkalinity, chloride ion, iron ion, chemical oxygen demand, total bacterial count, which had great influence on the formation of fouling, as well as running condition, fouling resistance and other parameters were measured through the experimental system built. A group of fouling data of the typical water quality was obtained. Two prediction models of fouling characteristics of the plate heat exchanger were built based on partial least squares algorithm (PLS) and support vector regression machine (SVR) with water quality parameters as independent variables and fouling resistance as dependent variable, and the impact of water quality parameter on predicting accuracy was analyzed. Research results showed that: the prediction accuracy of two methods could be controlled within 12.5% and meet the requirements of the project. Through the comparison of the prediction results, it was proved that the SVR method was better than the method of PLS. The impact of the water quality parameters on prediction model was discussed by the means of deleting the water quality parameters one by one.

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Experimental Study on R-410a Evaporation Heat Transfer Characteristics in Oblong Shell and Plate Heat Exchanger

Heat Transfer Engineering ◽

10.1080/01457630701266454 ◽

2007 ◽

Vol 28 (7) ◽

pp. 633-639 ◽

Cited By ~ 14

Author(s):

In-Kwan Kim ◽

Jae-Hong Park ◽

Yong-Ha Kwon ◽

Young-Soo Kim

Keyword(s):

Heat Transfer ◽

Experimental Study ◽

Heat Exchanger ◽

Plate Heat Exchanger ◽

Heat Transfer Characteristics ◽

Plate Heat ◽

Transfer Characteristics ◽

Evaporation Heat ◽

Evaporation Heat Transfer

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Experimental Study on Heat Transfer of Plate Heat Exchanger and Application to Waste Heat Power Generation

10.1063/1.3366406 ◽

2010 ◽

Author(s):

X. Y. Tang ◽

D. S. Zhu ◽

C. Q. Guo ◽

Liejin Guo ◽

D. D. Joseph ◽

...

Keyword(s):

Heat Transfer ◽

Power Generation ◽

Experimental Study ◽

Heat Exchanger ◽

Waste Heat ◽

Plate Heat Exchanger ◽

Heat Power ◽

Plate Heat

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An Experimental Study on the Influence of Flow Maldistribution on the Pressure Drop Across a Plate Heat Exchanger

Journal of Fluids Engineering ◽

10.1115/1.1779664 ◽

2004 ◽

Vol 126 (4) ◽

pp. 680-691 ◽

Cited By ~ 46

Author(s):

B. Prabhakara Rao ◽

Sarit K. Das

Keyword(s):

Experimental Study ◽

Heat Exchanger ◽

Pressure Drop ◽

Heat Exchangers ◽

Plate Heat Exchanger ◽

Operating Conditions ◽

Plate Heat ◽

General Flow ◽

Proper Design ◽

Flow Maldistribution

A detailed experimental study on flow maldistribution from port to channel of a plate heat exchanger is presented. In general, flow maldistribution brings about an increase in pressure drop across the heat exchanger. This increase is found to depend on flow rate, number of channels and port size. Experiments show that analytical predictions of pressure drop including maldistribution effect are quite accurate for practical purposes. The results indicate that under identical conditions, maldistribution is more severe in Z-type plate heat exchanger compared to U type. Experiments are also carried out under non-isothermal realistic operating conditions, which show increased flow maldistribution at elevated temperature. Finally predictions are made for industrial plate heat exchangers, which show the limitation of adding additional plates beyond a certain limit. An insight to the physical aspects of maldistribution and its possible reduction through proper design strategy is also indicated.

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