The evolutionary design of cooling a plate with one stream. (January 2018)

• Record Type: Journal Article
• Authors: Almerbati, A.; Lorente, S.; Bejan, A.
• Is Part Of: International journal of heat and mass transfer. Volume 116(2018)
• Page Start: 9
• Page End: 15
• Publication Date: 2018-01
• Subjects: Constructal design -- Cooling -- Electronics -- Photovoltaics -- Evolutionary design; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2017.08.122
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: The cooling system consists of one stream that morphs while embedded in a square plate heated uniformly. The evolutionary direction in which the thermal performance of the cooling system is improving. Several configurations are considered: serpentine, loop and cloverleaf. Reported are the configurations with minimum peak temperatures. Abstract: Here we show the performance of a cooling system consisting of one stream that morphs while embedded in a square plate heated uniformly. Several configurations are considered in order to establish the evolutionary direction in which the thermal performance of the cooling system is improving. First, serpentine shapes are considered. The total length of serpentine length is fixed, and the number of meanders is varied. The stream inlet and outlet are free to migrate on the perimeter of the heated plate. The results show that the serpentine with four elbows maintains lower peak temperatures when the inlet and the outlet of the duct are positioned in the middle of the side of the plate. We report the configuration in which the thermal conductance is maximum. Second, we analyzed the effect of various loop cooling configurations such as square, circular and clover leaf. Each loop is centered on the center of the plate, and its length is free to vary. The minimum peak temperature is achieved when the length of the circular loop is Lc = 2.5 L, and when the length of the square loop is Lc = 2.8 L. The clover leaf designs show even better performance.