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AN ENERGY AND EXERGY STUDY OF A SOLAR THERMAL AIR COLLECTOR
exergy energy solar collectors
2009/10/14
A solar flat plate air collector was manufactured in the north of Iran, and connected to a room as the model to study the possibility of using such solar heating systems in the northern parts of Iran....
EXERGY ANALYSIS OF SCROLL COMPRESSORS WORKING WITH R22, R407C, AND R417A AS REFRIGERANT FOR HVAC SYSTEM
exergy analysis scroll compressor alternate refrigerant HVAC system
2009/10/14
The rise in crisis of power enthralls the world economically and the options for conventional and non-conventional energy resources have been searched out. No system exists in this world with 100% eff...
Limitations of traditional first-law analysis, based upon thermodynamic performance of process unit coupled with mass and energy balances, are not a serious limitation when dealing with familiar syste...
Cooling tower is an open system direct contact heat exchanger, where it cools water by both convection and evaporation. In this paper, a mathematical model based on heat and mass transfer principle is...
Investigation of Turbulators for Fire Tube Boilers Using Exergy Analysis
Boiler Turbulator Fire Tube Effciency Exergy
2009/10/13
In this paper,an experimental study of ve di erent types of \turbulator" inserts for re tube boilers is presented. The experimental setup was constructed in the Department of Mechanical Engineering ...
基于Exergy研究的地源热泵降温系统性能分析（Performance Analysis on Ground Source Heat Pump Cooling System Based on Exergy Research）
地源热泵 降温 可用能
2009/5/22
以地下水式地源热泵系统在农业温室和办公楼中的夏季降温研究为例，归纳出地源热泵降温系统的能量利用质量模型——Exergy分析模型，以Exergy损失Edest和Exergy效率ε为评价指标对降温工况下系统及其组成单元的热力学性能进行分析和探讨。分析结果表明：蒸发器的Exergy效率达到92.5%，具有较高的能源利用质量；冷凝器的Exergy效率相对较小，Exergy损失较大，不可逆性大；总体来看，系...
新Ⅱ型生物质成型燃料热水锅炉的正反火用平衡分析（Positive and Reverse Exergy Balance Analysis of the New TypeⅡ Biomass Briquette Hot-water Boiler）
生物质成型燃料 热水锅炉 火用效率
2009/5/19
通过对新Ⅱ型生物质成型燃料热水锅炉进行正、反火用平衡计算和分析，得出新Ⅱ型生物质成型燃料热水锅炉的主要火用损失部位和参数，用反平衡火用效率分析得知燃烧不可逆火用损失最大，约为69.93%，其次为传热不可逆火用损失，约为14.50%，并用可避免火用损失概念对计算结果进行分析，表明采用可避免火用损失概念后，燃烧部位、传热部位、排烟部位的实用。
Assessment of Energy and Exergy Efficiencies of Power Generation Sub-Sector in Jordan
Energy Exergy Efficiency
2010/1/15
The present article is dedicated for evaluating the power generation sub-sector in terms of energetic and exergetic aspects. In this regard, energy and exergy utilization efficiencies during the perio...
高温气冷堆氦气透平直接循环的Exergy分析
热力学分析 布雷登循环 Exergy损失
2009/1/6
针对100MW电功率的氦气透平直接循环的设计，对循环各个部件分别进行了热力学第一和第二定律分析。给出了各个部件的输入和产出Exergy公式，计算了Exergy损失分布表，并和按照传统分析方法分析的结果进行了比较。结果表明，一半以上的Exergy损失发生在堆芯部分，而由预冷器、压气机和间冷器组成的压缩系统所占Exergy损失比重，比按照第一定律计算的能量损失份额结果小的多；循环Exergy损失主要...
Exergy of heat flows of the air-to-air plate heat exchanger
heat exchanger air efficiency energy exergy anergy heat flow stables
2014/2/28
Based on extensive measurements of the temperature, humidity and flow rate of the heated and cooled air in the plate heat exchanger this article analyses the influence of air inlet temperatures on bot...