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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.10
- 수록면
- 58 - 63 (6page)
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초록· 키워드
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In this study, the effect of deep ocean condenser inlet temperature (T<SUB>DOI</SUB>), condenser inlet pressure (P<SUB>cond,in</SUB>), and thermal diffusivity on system efficiency of some selected refrigerants was analyzed using HYSYS. The proposed DOTEC cycle is similar to the reheat Rankine cycle but eliminates irreversibilities by bleeding a fraction of the steam between certain stages of the turbine. The evaporator inlet mass flow rate, inlet temperature of turbine 1, turbine efficiency and inlet and outlet temperature of heat source were imposed. The working fluids considered are sorted in ascending order of their molecular weights as R717, R600a and R152a. Results indicated that a fluid with a lower boiling point temperature like R717 needs a corresponding high heat source and/or evaporator inlet pressure. Also, the response of thermal diffusivity closely follows the change in TDOI as an increase in T<SUB>DOI</SUB> increases P<SUB>cond,in</SUB> which reduces thermal diffusivity and system efficiency. Furthermore, the fluid with the nominal boiling point temperature has the highest efficiency with efficiency decreasing with an increase in T<SUB>DOI </SUB>.
목차
Abstract
1. Introduction
2. System Modeling
3. Results and discussion
4. Conclusions
References
참고문헌 (6)
참고문헌 신청
1. [학술지(정기간행물)] - S. Quoilin. / 2011 / Thermo-Economic Optimization of Waste Heat Recovery Organic Rankine Cycles / Applied Thermal Engineering 31 : 2885 ~ 2893
2. [학술지(정기간행물)] - J. H. Heo. / 2013 / Performance Characteristics of a R744 OTEC Power System Using High Temperature Heat Source / The Korean Society of Marine Engineerin : 266 ~ 267
3. [학술지(정기간행물)] - H. Gao. / 2012 / Performance Analysis and Working Fluid Selection of a Supercritical Organic Rankine Cycle for Low Grade Waste Heat Recovery / Energies 5 : 3233 ~ 3247
4. [학술지(정기간행물)] - W. Gu. / 2009 / Theoretical and Experimental Investigation of an Organic Rankine Cycle for a Waste Heat Recovery System / Journal of Power and Energy 223 : 523 ~ 533
5. [학술대회논문] - J. I. Yoon. / 2013 / Performance Comparison of Subcritical OTEC Power Cycle Using Various Working Fluids / International Symposium on Innovative Materials for Processes in Energy Systems : 565 ~ 570
2. [학술지(정기간행물)] - J. H. Heo. / 2013 / Performance Characteristics of a R744 OTEC Power System Using High Temperature Heat Source / The Korean Society of Marine Engineerin : 266 ~ 267
3. [학술지(정기간행물)] - H. Gao. / 2012 / Performance Analysis and Working Fluid Selection of a Supercritical Organic Rankine Cycle for Low Grade Waste Heat Recovery / Energies 5 : 3233 ~ 3247
4. [학술지(정기간행물)] - W. Gu. / 2009 / Theoretical and Experimental Investigation of an Organic Rankine Cycle for a Waste Heat Recovery System / Journal of Power and Energy 223 : 523 ~ 533
5. [학술대회논문] - J. I. Yoon. / 2013 / Performance Comparison of Subcritical OTEC Power Cycle Using Various Working Fluids / International Symposium on Innovative Materials for Processes in Energy Systems : 565 ~ 570
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UCI(KEPA) : I410-ECN-0101-2014-500-002742550