Thermoeconomic Analysis of a Single and Double-Effect LiBr/H2O Absorption Refrigeration System*
نویسندگان
چکیده
The aim of this work is to carry out a thermoeconomic analysis of a single and double-effect LiBr/H2O absorption refrigeration system. The methodology of functional analysis with negentropy is used. The exergetic cost of the main product, the cooling cost, was calculated as a function of the exergy of the heat source. Two cases were analyzed for each system: the first considers a direct-fired system while the second considers a hot-water driven system for the single-effect system and a steam-driven system for the double effect system as part of a cogeneration system. As expected, the resultant exergetic cost of the main product was higher for the direct-fired system.
منابع مشابه
Thermoeconomic analysis of a hybrid PVT solar system integrated with double effect absorption chiller for cooling/hydrogen production
A novel solar-based combined system which is consisting of a concentrated PV, a double effect LiBr-H2O absorption chiller, and a Proton Exchange Membrane (PEM) is proposed for hydrogen production. A portion of the received energy is recovered to run a double effect absorption chiller and the rest is turned into electricity, being consumed in the PEM electrolyzer for hydrogen producti...
متن کاملTransient Characteristics of a Single-Effect Absorption Refrigeration Cycle
This paper deals with a lumped-parameter dynamic simulation of a single-effect LiBr-H2O absorption chiller. In many studies the thermodynamic properties of LiBr-H2O solution were taken from some approximate relations causing the results to be somewhat inaccurate. These relations were used to solve simultaneous differential equations involving the continuity of species constituting the LiBr-H2O ...
متن کاملThermodynamic and Thermoeconomic Optimization of an Absorption Refrigeration System integrated with Refinery Crude Oil Furnace
In the present study, exhaust gases from Tehran refinery crude oil furnace are used in a Heat Recovery Steam Generator (HRSG)for generating steam. Then, the steam is directed to a double effect absorption refrigeration cycle to produce cooling. To meet the object, mass and energy balance equations of the coupling is carried out for both the HRSG and the absorption chiller and unknown thermodyna...
متن کاملProposal and analysis of a high-efficiency combined desalination and refrigeration system based on the LiBr-H2O absorption cycle — Part 1: System configuration and mathematical model
Simultaneous production of fresh water and refrigeration are often required, e.g. in warm-climate water-deficient regions, and this study is a proposal and analysis of an efficient way of producing both of them by consuming mainly low-grade heat. After introducing the configuration choice methodology, a combined refrigeration and water system, ARHP-MEE (Absorption Refrigeration Heat Pump and Mu...
متن کاملاثر مادون سرد کردن مایع خروجی از کندانسور در سیستمهای تبرید ترکیبی توسط سیکل جذبی آب- آمونیاک
This paper investigates the effects of subcooling the condenser outlet refrigerant in a compression refrigeration by an absorption refrigeration in an integrated refrigeration system from energy view point. For this purpose the thermodynamic system is analyzed, base on the mass and energy equation and also the effects of operating parameters such as prime mover, ambient temperature and evaporat...
متن کامل