TY - JOUR
TI - New methods to cope with temperature elevations in heated segments of flat plates cooled by boundary layer flow
AU - Hajmohammadi Mohammad Reza
AU - Moulod Mohammad
AU - Shariatzadeh Omid Joneydi
AU - Nourazar Seyed Salman
JN - Thermal Science
PY - 2016
VL - 20
IS - 1
SP - 45
EP - 52
PT - Article
AB - This paper documents two reliable methods to cope with the rising temperature  in an array of heated segments with a known overall heat load and exposed to  forced convective boundary layer flow. Minimization of the hot spots (peak  temperatures) in the array of heated segments constitutes the primary goal  that sets the platform to develop the methods. The two proposed methods  consist of: 1) Designing an array of unequal heaters so that each heater has  a different size and generates heat at different rates, and 2) Distancing the  unequal heaters from each other using an insulated spacing. Multi-scale  design based on constructal theory is applied to estimate the optimal  insulated spacing, heaters size and heat generation rates, such that the  minimum hot spots temperature is achieved when subject to space constraint  and fixed overall heat load. It is demonstrated that the two methods can  considerably reduce the hot spot temperatures and consequently, both can be  utilized with confidence in industry to achieve optimized heat transfer.