Thermal Analysis of ZPPR High Pu Content Stored Fuel

Table 5

Summary of calculated fuel temperature results.

Temperatures, °C
Case	Number of fuel plates	Problem description	Max fuel	Front clam	Cavity door	Bin door	Compare to	Max fuel Temp. diff. from base
Fuel placed parallel to front of storage bins—6-inch elements
A	16	Base, eps = 0.3	186	107	75	39	Best Est.	Base case
1	16	Base, eps = 0.3	219.3	146.9	87	39.6	Base for	Parameter study
2	16	Increase eps = 0.8	191.6	147.7	87.4	39.6	Case	Minus 29
3	16	Low power	137.4	96.2	61.6	37.2	Case	Minus 83
4	16	No heat next cavity, high power	200.2	123.4	67	37.6	Case	Minus 20
5	16	No heat next cavity, low power	124.3	81.7	50.7	36.2	Case	Minus 13
6	16	Rub mat and Al plate	224.1	147.2	87.5	39.7	Case	Plus 4
7	16	No thermal radiation	530	392	185.8	39.5	Case	Plus 310
8	6	Only 6 fuel elements	182.8	110.1	58.4	36.8	Case
9	16	Cell cooling off	235.3	166.3	111.6	70.2	Case	Plus 15
10	16	Hi power 35 W	280.4	186.8	109.2	42.1	Case	Plus 60
11	16	Hi power 35 W and cell cooling off	292	202	130.5	72.6	Case	Plus 72
Fuel placed perpendicular to front of storage bins—8-inch elements
12	12	8-inch fuel	210	146.9	87	39.6	Case	Minus 10