Able to dissipate limited amount of heat flux.
Lower coefficient of performance than vapor-compression systems.
Relegated to low heat flux applications.
More total heat to remove than without a TEC.
▪ Mini contact : TEC – Silicon Chip
▪ Concentrating the TEC Power on a Small Area
▪ TEC with 20μm-thick Bi2Te3
▪ 10W
▪ 1250μm x 1250μm Copper Mi
space between two points.
호형 탄력성 - 두 지점 사이의 공간을 포함하는 평균 탄력도.
ATS accounts - Automatic transfer system accounts. Accounts that allow an individual to electronically transfer funds from one account to another or to pay bills automatically.
ATS 계정 - 자동 변환 체계 계좌. 개인이 한쪽에서 다른 쪽으로 자금을 전자공학적으
(4) Double patterning
The double patterning is divided into four parts, leading with wafer requirements and then two sets of lithographic requirements (Generic Pitch Splitting - Double Patterning Requirements Driven by MPU metal Half-Pitch and Generic Spacer Patterning Requirements - Driven by Flash). The lithography requirements are different for each process; the requirements for pitch splitti
Tolerance limit and VIF in Collinearity statistics are indexes that judge multicollinearity of factor variables. Collinearity means relationship between two independent variables. For example, if coefficients correlation of two factor variables is 1, these variables have perfect Collinearity. And if coefficients correlation is 0, they have Collinearity not at all. Especially, relationship among 3
결정한 값이다.
2. VLE
이성분계의 등온 기-액 상평형 측정에는 head space gas chromatography (HSGC)를 이용하였다. 기상과 액상이 평형상태에 있는 혼합물내의 한 성분에 대해 퓨개시티(f)가 일정하다. 즉 기상과 액상이 평형상태에 있는 혼합물내의 한 성분에 대해 기-액 상평형식은 다음의 식(1)과 같다.
coefficient : In input-output analysis, the ratio of a particular input to the total outputs in that industry.
투입 계수: 투입-산출 분석에서 그 산업에서의 총 산출에 대한 특정한 투입 비율
Input-output analysis : An attempt to quantity the flows between different sectors of the economy. Input- output analysis is useful in economic planning.
투입-산출 분석:
3. 냉각판의 설계와 해석 결과
Consider a cold plate fabricated from aluminum(k=190W/mK) with regularly spaced rectangular channels through which the water is passed.
Assume the top surface of the cold plate to be insulated. System reliability considerations dictate that the maximum cold plate temperature must not exceed 40℃.
(a) Determine h and calculate the pumping power.
or potential difference between the layers
No fuel cost or fuel supply problem
No pollution
High reliability
Small amount of power required
Depend on place and climate
Large scale:
Ocean navigation aid
Telecommunication system
Remote monitoring and control
Cathodic protection
Remote area(island, high mountain)
Earth-orbiting satellite
Space probe
NACA- 4412를 이용한 Air Flow 해석
- 평균 캠버선의 변화 : 0.8 ~ 0.95
- 날개 꼬리 부분의 각도 변화 :
Vortex panel method
- Kutta condition
- Depend on angle & proportion
- Inviscosity Flow
- Implicit Formulation
- 2D Space