Optimal control of solar cooling systems

✍ Scribed by M. Salman; S. Kotob; M. Juraidan

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 677 KB
• Volume: 9
• Category: Article
• ISSN: 0143-2087
• DOI: 10.1002/oca.4660090207

✦ Synopsis

In this paper a control algorithm that minimizes the auxiliary energy consumption in a typical solar cooling system while maintaining appropriate comfortable conditions in the cooled enclosure is devised. A dynamic mathematical model for a lithium bromide-water absorption chiller is developed to be used for deriving the optimal control algorithm. Finally, the results of simulation of the optimal control algorithm indicate that a net reduction of more than 30% in auxiliary energy is possible.

KEY WORDS Optimal control algorithm Solar cooling systems

Lithium bromide-water absorption chiller include solar cooling, which is of prime importance in hot and arid climates. Development of optimal or near-optimal controllers for absorptive coolers requires the availability of a good dynamic model for the absorptive chiller. Development of a simple and linear mathematical model is hard because the absorptive process is highly non-linear.