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| Content Provider | IEEE Xplore Digital Library | 
|---|---|
| Author | Fritchman, Bruce M. Grantham, Walter J. | 
| Copyright Year | 1982 | 
| Description | Author affiliation: Department of Mechanical Engineering, Washington State University, Pullman, Washington 99164 (Fritchman, Bruce M.; Grantham, Walter J.) | 
| Abstract | The problem of maximizing storage fluid temperature at a specified terminal time by controlling both collector and tank loop flow rates is investigated for a flat-plate solar water heating system containing a coupling counterflow heat exchanger. The dynamic system is modeled by two ordinary differential equations incorporating both collector plate and tank fluid capacitance. The paper considers the usual case where the tank loss-to-capacitance ratio is less than that of the collector plate. It is shown that the optimal control algorithm does not depend explicitly on the insolation. Furthermore, the optimal flow rates are shown to be on-off. However, if the collector loop pumping capacity is sufficiently greater than that of the tank loop, then the collector loop "on" flowrate is not the maximum attainable flowrate. | 
| Starting Page | 1155 | 
| Ending Page | 1157 | 
| File Size | 356107 | 
| Page Count | 3 | 
| File Format | |
| Language | English | 
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Publisher Date | 1982-06-14 | 
| Publisher Place | USA | 
| Access Restriction | Subscribed | 
| Rights Holder | American Automatic Control Council(AACC) | 
| Subject Keyword | Optimal control Solar heating Water heating Water storage Fluid flow control Temperature control Control systems Fluid dynamics Differential equations Capacitance | 
| Content Type | Text | 
| Resource Type | Article | 
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