JP5527581B2 - 原子炉用熱電変換モジュール組立体及び燃料照射用集合体並びに材料照射用集合体 - Google Patents
原子炉用熱電変換モジュール組立体及び燃料照射用集合体並びに材料照射用集合体 Download PDFInfo
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- JP5527581B2 JP5527581B2 JP2009245921A JP2009245921A JP5527581B2 JP 5527581 B2 JP5527581 B2 JP 5527581B2 JP 2009245921 A JP2009245921 A JP 2009245921A JP 2009245921 A JP2009245921 A JP 2009245921A JP 5527581 B2 JP5527581 B2 JP 5527581B2
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Description
例えば、熱電変換モジュール2を最小単位の熱電半導体5を有するもの、例えばP型とN型の熱電半導体を各1個備えるユニ・カップル型としても構わない。また、絶縁層を備える電極部、特に熱源側電極部3として、電極層と電気絶縁層を有する傾斜機能材料から成るコンプライアント・パッド(FGMコンプライアント・パッド)を用いても良い。FGMコンプライアント・パッドは、例えば熱電半導体5側が電極層、その反対側が電気絶縁層で、両者の組成が連続的に変化するものであり、例えば特許第3056047号や特許第3482094号に開示された物を利用することができる。尚、両面が電極層、内部が電気絶縁層から成るFGMコンプライアント・パッドを用いても良い。勿論、放熱側電極部4にもFGMコンプライアント・パッドを用いても良い。
例えば、図2及び図3に示すモジュール(本体寸法40×35×6mm)において、厚さ4mmのタングステン板をγ線発熱体6として採用した場合、熱電変換モジュール2の低温側温度は394(℃)、高温側温度は1094(℃)となる。高速実験炉「常陽」の炉心中心におけるタングステンのγ線発熱分布を図4に示す。γ線発熱体は厚いほどその中心温度を高くできるため、熱電変換モジュールの定格運転温度(耐熱温度)を考慮して決定する。厚さを暫定した場合のγ線発熱体中心最高温度は次式で計算できる。以下の計算例ではナトリウム冷却高速炉を想定している。
Tmax= Tc +q”’b/h +q”’bRmod + (q”’/2λ) b2
= Tc +q”’b (1/h + Rmod + b/2λ)
= (原子炉冷却材温度)+(冷却材主流との温度差)+(モジュール内温度差)
+(γ線発熱体内温度差)
= 380 + q”’(W/m3) ×b (m)
×[(1/1.5×104 (W/m2K))+(3.5×10-3 (m2K/W))+b (m)/2λ(W/mK)]
= 380+14+700+4=380+718=1098 (℃)
ここに 、
原子炉冷却材温度: Tmax=380 (℃)
γ線発熱体(タングステン)の発熱密度: q”’= 100 (W/cm3) =100×106 (W/m3)
γ線発熱体(タングステン)の片側厚さ(実際の厚さの半分):
b= 2 (mm)= 2×10-3 (m)
原子炉冷却材(ナトリウム)の熱伝達係数(at 700 K): h= 1.5×104 (W/m2K)
熱電変換モジュールの熱抵抗: Rmod= 3.5×10-3 (m2K/W)
γ線発熱体(タングステン)の熱伝導率(at 700 K): λ=60 (W/mK)
2 熱電変換モジュール
3 熱源側電極部
4 放熱側電極部
5 熱電半導体
6 γ線発熱体
7 気密容器
7a 胴部
7b ケース蓋
7c 溶接箇所
8 滑り剤
12 ナイフエッジまたはノーズコーン
13 原子炉用熱電変換モジュール組立体が組み込まれた集合体
14 コンパートメント
Claims (6)
- 高温熱源側に設置される熱源側電極部と前記高温熱源よりも低温の低温熱源側に設置される放熱側電極部とを有する少なくとも1組の熱電変換モジュールと、前記熱電変換モジュールの前記熱源側電極部側に配置され原子炉内のγ線によって発熱するγ線発熱体と、前記熱電変換モジュール及び前記γ線発熱体を収容して密閉されると共に減圧または真空とされ、かつ前記熱電変換モジュールの各電極部と導通され外部に露出する電極を有する気密容器とを備え、前記気密容器に作用する加圧力によって前記熱電変換モジュールの前記放熱側電極部に前記気密容器の一面が押圧されて前記気密容器の周囲を流れる原子炉冷却材と原子炉内のγ線によって発熱する前記γ線発熱体との間の温度差で発電することを特徴とする原子炉用熱電変換モジュール組立体。
- 少なくとも前記γ線発熱体と前記熱源側電極部との間に熱伝導性を有する滑り材が介在され、前記加圧状態における前記熱源側電極部と前記γ線発熱体との間の相対的摺動を許容する請求項1記載の原子炉用熱電変換モジュール組立体。
- 前記気密容器の原子炉冷却材の流れに対して対向する側の面に、ナイフエッジまたはノーズコーンを設けるものである請求項1または2記載の原子炉用熱電変換モジュール組立体。
- 前記γ線発熱体は前記気密容器の中央に配置され、該γ線発熱体を挟んで前記気密容器と前記γ線発熱体との間にそれぞれ前記熱電変換モジュールが配置されている請求項1から3のいずれか1つに記載の原子炉用熱電変換モジュール組立体。
- 請求項1から4のいずれか1つに記載の原子炉用熱電変換モジュール組立体を組み込み、該熱電変換モジュールによって原子炉内で発生する熱を電気に変換して利用する燃料照射用集合体。
- 請求項1から4のいずれか1つに記載の原子炉用熱電変換モジュール組立体を組み込み、該熱電変換モジュールによって原子炉内で発生する熱を電気に変換して利用する材料照射用集合体。
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WO2013035921A1 (ko) * | 2011-09-08 | 2013-03-14 | 한전원자력연료 주식회사 | 열전발전소자를 이용한 원자력 발전소 비상배터리 충전 장치 |
KR101223273B1 (ko) * | 2011-10-28 | 2013-01-17 | 영남대학교 산학협력단 | 원자로 냉각 관리 시스템 |
JP2013165240A (ja) * | 2012-02-13 | 2013-08-22 | Central Research Institute Of Electric Power Industry | 熱電変換システム |
JP2014010022A (ja) * | 2012-06-29 | 2014-01-20 | Hitachi-Ge Nuclear Energy Ltd | 燃料集合体及び原子炉の炉心 |
JP6336986B2 (ja) * | 2012-09-12 | 2018-06-06 | ロゴス テクノロジーズ リミティド ライアビリティ カンパニー | モジュール型の可搬式原子力発電機および当該可搬式原子力発電機への燃料補給方法 |
KR101566633B1 (ko) * | 2014-08-06 | 2015-11-10 | 한국원자력연구원 | 피동형 수소재결합기의 수소연소저감장치 |
CN111640852B (zh) * | 2020-06-15 | 2023-09-26 | 安徽华东光电技术研究所有限公司 | 一种实现温差电池中发射极与接收极温度差的结构装置 |
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