Hot water pipes are located on 2.0-ft centers in a concrete slab with Kxx = Kyy = 0:80 B...

Hot water pipes are located on 2.0-ft centers in a concrete slab with K_xx = K_yy = 0:80 Btu/(h-ft-° F), as shown in Figure P13–26. If the outside surfaces of the concrete are at 85 ° F and the water has an average temperature of 200 ° F, determine the temperature distribution in the concrete slab. Plot the temperature contours through the concrete. Use symmetry in your finite element model.