Evaluation of a novel combined ejector-absorption refrigeration cycle — I: computer simulation

This paper describes a novel refrigeration cycle based on the combination of an absorption cycle with an ejector refrigeration cycle. The combination brings together the advantages of absorption and ejector refrigeration systems and provides high COP for refrigeration and air-conditioning. The combi...

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Bibliographic Details
Published in:International journal of refrigeration 1996, Vol.19 (3), p.172-180
Main Authors: Sun, Da-Wen, Eames, Ian W, Aphornratana, Satha
Format: Article
Language:English
Subjects:
Absorption
Air conditioning
Air ejectors
Applied sciences
calcul
calculation
Calculations
Computer simulation
conception
COP
cycle frigorifique
cycle hybride
Design
eau-bromure de lithium
ejection
Energy
Energy. Thermal use of fuels
Exact sciences and technology
hybrid cycle
Lithium compounds
refrigerating cycle
Refrigerating engineering
Refrigerating engineering. Cryogenics. Food conservation
simulation
Techniques. Materials
Water
water-lithium bromide
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Summary:This paper describes a novel refrigeration cycle based on the combination of an absorption cycle with an ejector refrigeration cycle. The combination brings together the advantages of absorption and ejector refrigeration systems and provides high COP for refrigeration and air-conditioning. The combined cycle is particularly suitable for utilising waste thermal energy. A computer simulation program was developed for the combined cycle and used to determine the performance of the system using LiBrH 2O for various generator, condenser and evaporator temperatures. Optimum operating conditions and ejector design data are also provided. Cet article décrit un nouveau cycle de réftigérateur fondé sur la combinaison d'un cycle á absorption et d'un cycle à éjection. Cette combinaison préserve les avantages de chacun des systèmes et assure un COP élevé en froid et conditionnement d'air. Le cycle combiné est particulièrement valable pour l'utilisation de chaleur de récupération. On a mis au point un programme de simulation par ordinateur du cycle combiné et on l'a utilisé pour déterminer la performance du système utilisant le mélange bromure de lithium-eau, pour plusieurs températures du générateur, du condenseur et de l'évaporateur. On donne également les conditions optimales de fonctionnement et les données de la conception de l'éjecteur.
ISSN:0140-7007
1879-2081
DOI:10.1016/0140-7007(96)00010-2