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Titolo:
Economic analysis of two stage dual fluid absorption cycle for optimizing generator temperatures
Autore:
Saghiruddin; Siddiqui, MA;
Indirizzi:
Aligarh Muslim Univ, Dept Mech Engn, Aligarh 202002, Uttar Pradesh, India Aligarh Muslim Univ Aligarh Uttar Pradesh India 202002 tar Pradesh, India
Titolo Testata:
ENERGY CONVERSION AND MANAGEMENT
fascicolo: 4, volume: 42, anno: 2001,
pagine: 407 - 437
SICI:
0196-8904(200103)42:4<407:EAOTSD>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIOGAS; SYSTEMS;
Keywords:
dual fluid cycle; LiBr-H2O; ammonia refrigerant; flat plate solar collector; evacuated tubular collector; biogas; liquefied petroleum gas; low evaporation temperature; economic analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_BC--
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Siddiqui, MA Aligarh Muslim Univ, Dept Mech Engn, Aligarh 202002, Uttar Pradesh, India Aligarh Muslim Univ Aligarh Uttar Pradesh India 202002 India
Citazione:
Saghiruddin e M.A. Siddiqui, "Economic analysis of two stage dual fluid absorption cycle for optimizing generator temperatures", ENERG CONV, 42(4), 2001, pp. 407-437

Abstract

Economic analysis of a Flat plate solar collector For operating a two stage dual fluid absorption cycle has been performed to optimize the generator temperatures. The dual fluid absorption cycle uses a LiBr-H2O solution in the first stage, while ammonia refrigerant with some suitable absorbent is used in the cycle at the second stage. The absorbents selected to be used with ammonia at the second stage are water, lithium nitrate and sodium thiocyanate. For the purpose of comparison, the analysis has also been done with an evacuated type solar collector, biogas and LPG as the sources of energy in the dual fluid cycle. Comparisons of the optimum generator temperatures,optimum values of coefficient of performance (COP) and the minimum operating costs obtained for the dual fluid cycle have been done with those of thesingle stage absorption cycle. The dual fluid cycle using NH3-H2O at the second stage when operated by the flat plate solar collector shows very goodperformance and becomes quite economical, especially at low evaporation and high condensing temperatures. Eventually, the single stage cycle, due to certain limitations in it, ceases to operate at such conditions. The optimum generator temperatures, optimum COPs and minimum operating costs obtainedfor a wide range of operating conditions have been exhibited graphically. Also, mathematical relationships have been developed for finding the optimum generator temperatures in the cycle at the second stage of the dual fluidsystem. (C) 2000 Elsevier Science Ltd. Ail rights reserved.

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Documento generato il 22/01/20 alle ore 21:50:06