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Bu çalısmada, endüstrideki atık ısıların sisteme tekrar kazandırılmasındakullanılabilecek olan absorbsiyonlu ısı yükselticisi uygulaması incelenmistir.Klasik ısı geri kazanım sistemlerinde faydalanabilecek ısının sıcaklıgı, atık ısısıcaklıgı ile sınırlıdır. Absorbsiyonlu ısı yükselticisi ile atık ısı kaynagısıcaklıgının üzerindeki sıcaklıklarda, faydalanılabilir enerji üretilebilmektedir.Çalısma kapsamında öncelikle absorbsiyonlu ısı yükselticisinin çalısmamantıgının anlasılması için sogutma sistemlerinden baslayarak temelabsorbsiyon mantıgı açıklanmıstır. Absorbsiyonlu ısı yükseltici sistemi içintermodinamik analiz yapıldıktan sonra, Küçükçalık Tekstil kojenerasyon tesisigömlek sogutma suyundaki fazla ısıdan faydalanarak kızgın su üretme amaçlıstandart tipte eriyik esanjörü kullanılan absorbsiyonlu ısı yükselticisi uygulamasıincelenmistir. Dizayn ve hesaplamalar için bilgisayarda basit bir programhazırlanıp hesaplamalar bu program vasıtasıyla yapılmıstır. Böylece parametredegisikliklerinin sistem üzerindeki etkisi öngörülmeye çalısılmıstır.Aynı sistem üzerinde parametrelerin degisimi incelenmistir. Buincelemenin sonuçları dogrultusunda sistem üzerinde verim artısı ve gerikazanılan ısı miktarını arttıran degisiklikler irdelenmistir.Yapılan degisikliklerde hedef, absorbsiyonlu ısı yükselticisi COP'siniyükseltmek yerine, sistem geri kazanım miktarını arttırmak olmustur. Dolayısıile yapılan degisiklikler absorbsiyonlu ısı yükselticisi COP degerindeki olumluartısın sistem geri kazanımına her zaman pozitif katkısı olmayacagı tespitedilmis olup, geri kazanılan ısı miktarını arttırmaya yönelik farklı uygulamalarile daha çok ısının geri kazanılabilecegi saptanmıstır.Anahtar Kelimeler: Absorbsiyonlu ısı yükselticileri, absorbsiyon, sanayiuygulamaları, LiBr-Su. In this study, applications of absorption heat transformer researched forrecovering waste heat at industrial processes. At classical heat recovery systems,recovered heat temperature is limited by waste heat temperature. By using heattransformer system, it?s possible to produce useful energy which the temperatureof useful energy is higher than waste heat resource.In the beginning of the study, it has been started from cooling system principlefor comprehending the basic principle of absorbtion. After analyisingthermodynamical model of absorption heat transformer , it has been researchedto produce super heated water theoretically by waste heat from cooling water ofco-generation, which has planted at Küçükçalık Tekstil in Bursa, Turkey , byusing standard solution heat exchanger used absorption heat transformer. Asimple computer program written for design and calculation. Thus, the effects ofvariable parameters have been tried to foresight.Changing of parameters have been researched at the system. By theresults of this research, the changes which effects to increase the efficiency andrecovered heat have been studied.The target of changes has been done to increase recovered heat, not forCOP of absorption heat transformer. Consequently, it has determined that thepositive changes at COP don?t show the increasing of recovered heat. It ispossible that to recover more energy by different absorption heat transformerapplications.Key Words: Absorption heat transformer, absorption, industrial applications,LiBr-Water. 138

Absorption Heat Transformer (AHT) systems are devices with the unique capability of raising the temperature of low or moderately warm waste heat sources to more useful levels. The study includes an investigation to analyze the AHT systems using water-lithium bromide solutions with water as the refrigerant. First, a basic AHT system was described, the operating sequence was explained and thermodynamic system analysis was presented. Next, an application of the AHT system to an industrial company was analyzed. A computer code was prepared to determine the effect of different parameters on the AHT system performance and the results were presented in graphical form. Additionally, it was shown that how the basic AHT system could be modified to increase the COP and the heat transfer at the absorber, in other words, the hot process water produced. The system performance data were presented in a tabular form for different system modifications from the base system for comparison. It was proven that, by applying different modifications, the COP could be increased by 14.1%, the heat transfer at the absorber by 158.5% and the hot process water produced by 3.59% compared to the basic ANT system. (c) 2010 Elsevier Ltd. All rights reserved.

An industrial application of the single stage and double absorption heat transformer (AHT) systems using water-lithium bromide solutions with water as the refrigerant was analyzed. First, a basic single stage AHT system was described, the operating sequence was explained and thermodynamic system analysis was presented. Next, an application of the single stage AHT system to an industrial company was analyzed. A computer code was prepared to determine the effect of different parameters on the AHT system performance and the results were presented in graphical form. Additionally, the series and parallel double absorption AHT systems were introduced, the operating sequences were explained and thermodynamic system analysis was included. All results were presented in tabular form for comparison. It is concluded that about 50% of the waste heat can be utilized and the hot process water and vapor could be produced by applying single stage and double AHT systems, respectively. The parallel double AHT system could generate more vapor than the series double AHT system. Copyright (C) 2009 John Wiley & Sons, Ltd.