62 ARTICLE / MAKALE Engine 1 -Heating -Cooling Engine 1 Engine 2 Engine 2 Electricity Compressor ehiller Heating and cooling Figııre 2. Duratioıı diagraın ofa trigen systeın. Purchase Year -Boilers and winter time either for heating purpose and chilling purpose, which prolongs the operating hours and the load factor. Thereby the viability of the investment improves. in fig 3 a comparison is made between two solutions for scuhipllpelrysinagretriignestnaltloedanwiathirppoorwt,eorne in which compressors feed from the genset and heat fTr oh em stehlee cet endg isnoel urtei ocno vceornys issyt ss toe m . f a recovery boiler feeding both the local district heating system and the absorption ehiller for the local district cooling system. As noticed from the fıgure the e co n n ergy saving is substantial when using the CHP trigen fıguration both in the heating mode and in the cooling mode. Energy Recovery System When recovering energy from an engine driven plant a boiler will take heat from the exhaust gas and heat exchangers will take heat from the engine cooling. Due to temperature levels and needed feed temperatures of the absorptions chillers and district heating � proper design has to be made. wSiinthgltee-mstpaegreatuLriBers-adboswonrptotio9n0chillers are able to use hot water °C as the energy source, while two-stage LiBr-absorption chillers need about 170 °C, which means that they are normally steam-f absorption ehiller producing water at 6 ir - e 8 d °C. Ah as isn gal ec-oset affgi cei eLnitBor f performance (COP) of about 0.7 and a two-stage ehiller a COP ENERJİ & KOJENERASYON DÜNYASI 11 O1 MMWW , , choeoa lti ni ngg mmooddee Fuel input 23 MW;, heatin� mode 1 MW,, 10 MW, Jı5 ,3 MW;, coolıng mode oolıng mode Separate electricity and heat generation Fuel input 23 MW JJ Additional fuel 1 0 MW, Thoetaatl mefofidceen7c7y,o/o Tc ootoalli negffmiceondcey,65 o/o pr. �Additiona = l fu • e=l to aux. ı� � boilers O MW, Trigeneration; power generation, heat generation and absorption cooling Figııre 3. Separate power and heat production vs. trigeneratioıı. at an airporı. of c o rarbeosupto n1 d. 2i n. gT htoi s 0m. 7eoarn s1 .t2h et iymceasnt hper ohdeuactesao ucrocoel icnagpcaacpi tay .c i t y Trigeneration and Distributed Power Generation Since it is more difficult and costly to distribute hot or cold wnd ei asett erdi rbs ut thtoea dnb epe ol l oewcc eat rrti ecpidtr yoi , ndt urcicgl ot ei sonene, pr sar oit ni xocinme ai tt huy et ot omt r ti agh teei cn aheel rl aya tt il oeonar dcpsol al t dno t winaoterdr ecrotnosummaexirms.ize the total efficiency of the plant, the concept is based on the joint need for heat and cold water.
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