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Report No.
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Evaluation of heat exchange performance for secondary pressurized water cooler in HTTR

Tochio, Daisuke ; Watanabe, Shuji; Saikusa, Akio ; Oyama, Sunao; Nemoto, Takahiro; Hamamoto, Shimpei ; Shinohara, Masanori ; Isozaki, Minoru; Nakagawa, Shigeaki 

In High Temperature Engineering Test Reactor (HTTR), the rated thermal power of 30MW, the generated heat at reactor core is finally dissipated at the air-cooler by way of the heat exchangers of the primary cooling system, such as the intermediate heat exchanger (IHX) and the secondary pressurized water cooler (SPWC). The heat exchangers in the main cooling system are required the heat exchange performance to remove the reactor-generated-heat of 30MW under the condition of reactor coolant outlet temperature of 850 $$^{circ}$$C/ 950 $$^{circ}$$C. Therefore, the heat exchanges are required to satisfy the design criteria of heat exchange performance. In this report, heat exchange performance of the SPWC in the main cooling system was evaluated with the rise-to-power-up test and the in-service operation data. Moreover, evaluated value is compared with designed one, it is confirmed that the SPWC has required heat exchange performance.

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