Exergetic optimisation of a four-temperature-level absorption heat pump based on finite-time thermodynamics

被引：1
作者：
Nouadje, Brigitte Astrid Medjo [1 ]
Wouagfack, Paiguy Armand Ngouateu [2 ]
Nemogne, Rodrigue Leo Fossi [3 ]
Kapen, Pascalin Tiam [1 ,4 ,5 ]
Tchinda, Rene [1 ,4 ]
机构：
[1] Univ Dschang, Univ Inst Technol Fotso Victor, Ind & Energy Syst Engn Lab, Bandjoun, Cameroon
[2] Univ Buea, Higher Tech Teachers Training Coll, Dept Renewable Energy, Kumba, Cameroon
[3] Univ Yaounde I, Energy Elect Syst & Elect Lab, Dept Phys, Yaounde, Cameroon
[4] Univ Dschang, Dept Phys, Lab Mech & Modeling Phys Syst, Dschang, Cameroon
[5] Univ Montagnes, Lab Biomed Engn Energy & Construct, ISST, Bangangte, Cameroon
来源：
INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY | 2022年 / 41卷 / 03期
关键词：
Irreversibilities; exergetic-performance coeffiecient; absorption heat pump; four-temperature-level; optimisation; ENTROPY GENERATION MINIMIZATION; PERFORMANCE OPTIMIZATION; THERMOECONOMIC OPTIMIZATION; ECOLOGICAL OPTIMIZATION; LITHIUM BROMIDE; REFRIGERATOR; SYSTEM; WATER; TRANSFORMER; RESISTANCE;
D O I：
10.1080/14786451.2021.1928132
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A finite-time thermodynamics study and an exergetic optimisation for a four-temperature-level absorption heat pump have been performed. The maximum of the exergetic-performance coefficient (EPC) and the corresponding optimal ecological coefficient of performance (ECOP), ecological objective function (E), exergetic efficiency (ex), coefficient of performance (COP), specific entropy generation rate and heating load have been obtained. The effects of internal irreversibilities, external irreversibilities, heat leakages, ratio of the rejected heat of the absorber to the condenser and the heat-transfer coefficients of different components on the system performance have been analysed and discussed. It was noticed a greater harmful impact of heat losses in the generator-absorber assembly. Comparisons of EPC criterion with ECOP, COP, E and ex criteria have been provided. The results demonstrate that the four-temperature-level absorption heat pump working at maximum EPC conditions has a signi?cant advantage in terms of entropy generation rate and coefficient of performance.
引用
收藏
页码：257 / 288
页数：32
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