2010 Fiscal Year Final Research Report
Development and Optimum Design of a Wire-type Joule-Thomson Microcooler
| Project/Area Number |
21760159
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
SAKODA Naoya Kyushu University, 水素エネルギー国際研究センター, 特任助教 (30532337)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 冷凍機 / マイクロ / ジュール・トムソン膨張 |
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| Research Abstract |
The wire-type microcooler developed in this work consists of a concentric counterflow heat exchanger and a capillary. The primary cooling process of the microcooler is the isenthalpic Joule-Thomson expansion at the capillary. The effects of refrigerant conditions, and dimensions and materials of the microcooler on the performance were examined by experiments and numerical analysis. The numerical analysis model represents the temperature drop and mass flow rate obtained in the experiments within 20% and 10%, respectively. A cooling power of 550 mW at an evaporator temperature of 271 K was attained by using carbon dioxide as a refrigerant at the inlet pressure of 3.0 MPa.
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