Research Article
A Small-Sized HTGR System Design for Multiple Heat Applications for Developing Countries
Table 1
Major design specification of HTR50S.
| | Parameters | Single operation mode (phase I) | Serial operation mode (phases II and III) |
| | Thermal power (MW) | 50 | 50 | | Coolant | Helium | Helium | | Reactor inlet temperature (°C) | 325 | 325 | | Reactor outlet temperature (°C) | 750 | 900 | | Coolant pressure (MPa) | 4 | 4 | | Coolant flow rate (kg/s) | 22.3 | 16.5 | | Core structure material | Graphite | Graphite | | Core type | Prismatic/pin-in-block | Prismatic/pin-in-block | | Effective core height (m) | 3.48 | 3.48 | | Equivalent core diameter (m) | 2.30 | 2.30 | | Numbers of fuel blocks | 180 | 180 | | Fuel |
Low enriched UO2
TRISO coated fuel particle | Low enriched UO2
TRISO coated fuel particle | | HTTR type fuel High burn-up fuel | High burn-up fuel | | Refueling | Whole Half core | Half core | | Reactor pressure vessel | Mn-Mo steel (SA533B/SA508) | Mn-Mo steel (SA533B/SA508) | | Number of main cooling loop | 1 | 1 | | Heat removal (SG/IHX (MWt)) | Single mode (50/0) | Serial mode (30/20) | | Steam turbine power generation (MWe) | 17.2 | 13.5 | 8.6 | 10.3 | | Gas turbine power generation (MWe) | — | — | — | 6.9 | | District heating (MWt) (water at 95°C and 0.1 MPa (t/h)) | — | 25 (857) | — | 7.6 (259) | | Process heat (MWt) (helium at 850°C and 4 MPa (t/h)) | — | — | — | 20 (47.3) | | Process heat (MWt) (helium at 310°C and 10 MPa (t/h)) | — | — | 25 (45) | — | | Hydrogen (Nm3/h) | — | — | — | 800 (phase III only) |
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