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- W49069467 abstract "The general analytical equations relating the core-power density and the gas-film temperature drop at the fuel surface to the pnincipal reactor parameters are presented for both axial-flow and radial-flow pebble bed cores. Charts are included which show the power density and gas-film temperature drop as functions of fuel-ball diameter, pumping power-to-heat removal ratio, gas temperature rise per unit length of gas passage, and the gas pressure. The effects of voidage, system temperature and gas properties are considered along with factors causing hot spots. The effects on interior temperature of variations in the gas film heat transfer coefficient around the fuel surface were investigated. Neglecting hot spots, the power density obtainable in the prismatic core is more than four times that of the pebble bed core for equal maximum fuel temperatures. The extra degree of freedom available in design of prismatic core coolant passages permits the designer always to select a combination of parameters that is superior to the optimum combination for the pebble bed reactor. It is therefore clear that the fuel handling system, including perhaps the reactor maintenance, will have to be considerably more economical in the case of the pebble bed reactor in order for that reactor to compete with its prismatic counterpart. (auth)" @default.
- W49069467 created "2016-06-24" @default.
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- W49069467 date "1961-06-19" @default.
- W49069467 modified "2023-09-23" @default.
- W49069467 title "HEAT TRANSFER ANALYSIS OF PEBBLE BED REACTORS AND COMPARISON WITH PRISMATIC CORES" @default.
- W49069467 doi "https://doi.org/10.2172/4842983" @default.
- W49069467 hasPublicationYear "1961" @default.
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