世界經(jīng)濟(jì)的發(fā)展和世界人口的增長增加了對淡水的需求。另一方面,臭氧消耗和全球變暖問題由于對環(huán)境的巨大危害而是最嚴(yán)重的全球性問題之一。同時(shí),全球氣溫的上升使制冷和空調(diào)需求增加。淡水和冷卻生產(chǎn)是兩個(gè)耗能過程,導(dǎo)致大量的溫室氣體排放。因此,淡水危機(jī)和日益增長的冷卻需求是全球兩個(gè)重要和關(guān)鍵問題,特別是在熱帶地區(qū),這使得淡水和制冷成為同時(shí)需要的最重要產(chǎn)品之一,特別是在中東國家和熱帶地區(qū)等淡水來源不足的區(qū)域。聯(lián)產(chǎn)系統(tǒng)同時(shí)生產(chǎn)多個(gè)產(chǎn)品,比單獨(dú)生產(chǎn)相同產(chǎn)品的系統(tǒng)更節(jié)能。結(jié)合制冷和增強(qiáng)的多效閃蒸海水淡化系統(tǒng)（B-MED）對于淡水和冷電聯(lián)產(chǎn)非常有用且節(jié)能。本研究旨在參與改進(jìn)這一聯(lián)產(chǎn)系統(tǒng)。對組合CO2跨臨界制冷和B-MED的原始系統(tǒng)進(jìn)行了研究和分析,然后通過添加另一個(gè)增強(qiáng)器模塊來優(yōu)化原始系統(tǒng),因此,原始系統(tǒng)只有一個(gè)增強(qiáng)器模塊B-MED,而優(yōu)化的系統(tǒng)有兩個(gè)增強(qiáng)器模塊2B-MED。開發(fā)了兩個(gè)系統(tǒng)的數(shù)學(xué)模型,研究設(shè)計(jì)參數(shù)對系統(tǒng)性能的影響。該模型基于系統(tǒng)組件周圍的材料和能源平衡。數(shù)學(xué)模型分為三個(gè)部分,包括質(zhì)量平衡、鹽度平衡和能量平衡。該模型還包括傳熱方程和鹽水的物理特性方程。所有的參數(shù)都被包含在系統(tǒng)內(nèi)并研究了每個(gè)參數(shù)... 

【文章頁數(shù)】：120 頁

【學(xué)位級別】：碩士

【文章目錄】：
摘要
Abstract
Abbreviations
Chapter 1: Introduction
    1.1 Background
    1.2 Study Significance
    1.3 Objectives
    1.4 Outlines
Chapter 2: Literature Review
    2.1 Desalination in General
    2.2 The Standard Technologies in Water Desalination
        2.2.1 Desalination with Phase Change
            2.2.1.1 MSF
            2.2.1.2 MED
                2.2.1.2.1 Flash-Boosted Multi-Effect Distillation Process
                2.2.1.2.2 Preheated Multi-Effect Distillation Process
                2.2.1.2.3 Boosted Multi-Effect Distillation Process
            2.2.1.3 Vapor-Compression Evaporation Systems (VC)
        2.2.2 Desalination Systems without Phase Change
    2.3 Trans-critical C0_2 Refrigeration Systems
    2.4 Combined Refrigeration and Desalination Systems
Chapter 3: Materials and Methods
    3.1 Assumptions
    3.2 Validation of Process Simulation Model
    3.3 The First Model
        3.3.1 The Model Description
        3.3.2 Simulation Setup
            3.3.2.1 Computational Setup
                3.3.2.1.1 Thermodynamic Modeling of the Trans-critical C0_2 RefrigerationSystem
                3.3.2.1.2 Thermodynamic Modeling of the B-MED System
                    3.3.2.1.2.1 The First Effect
                    3.3.2.1.2.2 The First Booster Module
                    3.3.2.1.2.3 The Effects (2-n)
                    3.3.2.1.2.4 The Final Condenser
                    3.3.2.1.2.5 The Overall System
    3.4 The Second Model (The Optimized System)
        3.4.1 The Model Description
        3.4.2 Simulation Setup
            3.4.2.1 Computational Setup
                3.4.2.1.1 Thermodynamic Modeling of the Trans-critical CO_2 RefrigerationSystem
                3.4.2.1.2 Thermodynamic Modeling of the 2B-MED System
                    3.4.2.1.2.1 The First Effect
                    3.4.2.1.2.2 The First Booster Module
                    3.4.2.1.2.3 The Second Booster Module
                    3.4.2.1.2.4 The Effects (2-n)
                    3.4.2.1.2.5 The Final Condenser
                    3.4.2.1.2.6 The Overall System
Chapter 4: Results and Discussions
    4.1 The First Model
        4.1.1 The Influence of the Inlet Heat Source Temperature in the 1B-MED System
            4.1.1.1 Investigation of the 1B-MED System at 90℃
            4.1.1.2 Investigation of the 1B-MED System at 95℃
            4.1.1.3 Investigation of the 1B-MED System at 100℃
            4.1.1.4 Investigation of the 1B-MED System at 105℃
            4.1.1.5 Investigation of the 1B-MED System at 110℃
        4.1.2 The Effect of the High Top Brine Temperature in the 1B-MED System
        4.1.3 Investigation of the 1B-MED System in Two Different Cases
        4.1.4 Analyses of the First Effect and the First Booster Module in the 1B-MEDSystem
        4.1.5 Investigation of the Gas Cooler in the 1B-MED System in Different Cases
            4.1.5.1 Analyses of the Gas Cooler with a Different Number of Effects
            4.1.5.2 Analyses of the Gas Cooler with a Fixed Number of Effects
    4.2 The Second Model
        4.2.1 The Effect of the Inlet Heat Source Temperature in the 2B-MED System
            4.2.1.1 Investigation of the 2B-MED System at 85℃
            4.2.1.2 Investigation of the 2B-MED System at 90℃
            4.2.1.3 Investigation of the 2B-MED System at 95℃
            4.2.1.4 Investigation of the 2B-MED System at 100℃
            4.2.1.5 Investigation of the 2B-MED System at 105℃
            4.2.1.6 Investigation of the 2B-MED System at 110℃
        4.2.2 The Effect of the High Top Brine Temperature in the 2B-MED System
        4.2.3 Investigation of the 2B-MED System in Two Different Scenarios
        4.2.4 Analyses of the First Effect, the First Booster Module, and the Second BoosterModule in the 2B-MED System
        4.2.5 Investigation of the Gas Cooler in the 2B-MED System in Different Cases
            4.2.5.1 Analyses of the Gas Cooler with a Fixed and Different Number of Effects
    4.3 Comparison of the 1 B-MED and the 2B-MED Systems
        4.3.1 Comparison of the Total Freshwater Production Rate in the Two Systems
        4.3.2 The Effect of the High Top Brine Temperature
        4.3.3 Investigation of the Two Systems in Two Different Cases (Scenarios)
        4.3.4 Investigation of the Gas Cooler in the Two Systems
            4.3.4.1 Investigation of the Gas Cooler in the Case with a Different Number ofEffects
            4.3.4.2 Investigation of the Gas Cooler in the Case with a Fixed Number of Effects
Chapter 5: Conclusions and Recommendations
    5.1 Conclusions
    5.2 Further Research and Recommendations
        5.2.1 Investigation of the Combined System in Different Climate Regions
        5.2.2 Investigation of the Economic Part of the Optimized System
        5.2.3 Investigation of the Life Cycle Assessment of the Combined System
        5.2.4 Investigation of Other Modifications of the Combined System
References
Appendix
Acknowledgement
List of Publications
學(xué)位論文評閱及答辯情況表



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