58 MAKALE/ ARTICLE (i mo rp orat ch tei cr ahl ei an t ssmi nakl l) dwehvi cehl o pcma ne nmt sa,k ea nsdo, mf ien asl lyys tt eh em sh i g h c a p i tal cost of installing solar cooling systems. However, improved technology and rising fossil fuel prices are improving the conditions for solar thermal and there is a sense of growing excitement surrounding this emerging renewable technology. Cooling systems irne ngeewnaebr al el , haei ra-tc oh an vd ei t i ot on ui nrg m( Aa iCn ) cuonmi tps own eh ni cths . cFai rns tul ys et h e y am ubsi ot mp oa ss ss ebsos i l ea r ,h eaact osgoeunrceer attoi o nd r pi vl ea ntth eo r eah i lsl eorl .a Tr hc iosl l emcat oyr .b e Sh eeactotnod l py r, ot dh eu cAeCc os lyds tweamt emr wu shti chha vwei l labeehui l sl eerdwthoi ccho or ul nt hseoani r . Tit hi se nt heier dd esdta. gTeh iiss caamn ebaenascthoi egveetdthweith' c of aonl i ncgopi l sow(wehr'etroe w h e r e wb eaar mm sa, i rc oi so lb lpoawnne l os v, ecre nc torladl cd ou ci l st ,s coarussoi nmg ei t ot toh ecro os ly) ,s tceomo.l i n g tFoi ndai lsl yp , o lsaer goef tshoel a er xccoeosl si n gh esayt s rt ee mm os v me du sf tr ocmo nt thaei n a ai r . hTehai st smi naky, bsyesatecmo.oling tower, borehole, swimming pool or a dry re-cooling Thermal ly driven chillers Ta rhee rues eadr efot wr ob umi l daiinng t yapi re sc oonf dri et i forni gi negr a st iyosnt et emcsh n- oel ol egci et rsi cw h i c h vapour compression systems (which use Freon® or similar cSoi nmc ep otuh neds se) ,a ab sn od r phtei oant - dcroi voel i nn gasbyssotrepmt i os nc acno obl ien gd rdi veevni c eb sy . sbteeapmowoerrehdolbwyastoelra(rotrhienrdmeeald inasttaolslastiliofnuse.l burner) !hey can Within the absorption chillers, the two most common kinds of refrigerant cycles are lithium bromide/water and ammonia/ water, which have lower temperature limits of 4.4 °C and 6.6 °C respectively. Twhi teh ms oal ai nr tphr eo rvmi dael r coofoal i nb gs oirsp tYi oanz aekhi i ol l ef rJ ea pq au inp, mwehni tc ht ohr auss e si nucpl updl i iendg st yh set eSmc hs wt ao rr zme naengygseor l aSrt at hdei urmm ai nl cAouosl ti nr iga , i nt hset a nl l aetwi ol yn s , rebuilt EAR To in Tampa, Florwidear. iOnthKeorsocvoompaandnieas rweshiidcehntpiarol vdideeveelohpilmleer nt es oq mu i pemoefntthienscel u dceo mCpl i ma naiteesweh al l ,v eEAbWe gaunn dt oT hperromdauxc.e l nstme raelsl t i n g l y sdyesstsei cmasn tl ecsysc lteh amna3c0h i nkeW, w- hEi lAe WC l hi maastei nwt reol ld iusc ec du r rae n1t5l y kbWr i n g i n g iSt sp a1 nOi skhWc odme spsai cn ya nRt oslyasrltei cma oi sn leon tlehrei n mg at hr kee tm. aErvkee nt ws mi t ha lal e r4, . 5 kW system designed tor domestic air-conditioning. Solar collectors Ae ql ouni pgmwei nt ht ai n hae asto- dl ar ri v ceon oel i nh igl l esr y, st ht eemn ei sx tae ss soel anrt i tahl eprime cael hoef a t ENERJi DÜNYASI KASIM 2006 YENİLENEBİLİR ENERJİ / RENEWABLE ENERGY source. These can roughly be divided into those delivering relatively low temperature heat (mainly standard solar thermal panels, like those used for domestic water heating) and systems which produce high temperature steam. The slaulli tearbul eseincoi nndcuesnttrriaatl inagp psloi claartiotencsh. nology and are most Solar thermal collectors Tr ehl aet itveecl yh nsoi ml o pg lye ,i nwviot hl vetwd oinmtahienstey pseosl aor ft hceorl lme catlosr sy.s tFelamt sp lias l e ca ob sl l eocr bt oerrs saurrefagcel a zwehdi c, hi n scuolnavt ee rdt sp saunnel li sg hctoinnttao i nhi nega t .a nT h i s ch eo al l et cet ox rc hi sa ncgoenrn ei nc ttehde vhioat awfal ot ewr caynldi n dr eetru. rFn l acto pp lpaet er psiypset et om sa generally provide hot water at 60°-70°C, and so are tervaadci tui oa nt eadl l yt ul eb ses scy os tme mm os .n Ni no nseot lhaer l ecsoso, l itnhge ya papr el i c ba et i ionngs ulsheadn sBuacvcaer si as f( ui nl lsyl ai nl l esdobmyeCsoynset er gmysi,n i n2c0l 0u 4d i)n, go roonn at h7e0r-oboefdo hf ot ht eel i n Cc oi tl rl ei ncSt oorl ai sr ftahcet oer vy a. Tchuea lseedc tounbde .mTahi ne st ey pceo on sf i ss to loafr at h seer mr i easl o f at u bveasc, u uema c. hT hc eo nvt aa ci nui nugm ai sn gaeb ns eo rr ab lel yr baentdl ear apti pi nes su luartri on ugntdheed b y wt oa bt eer rtehaacnh es dt a tnhdaanrdi ni nf sl aut -l aptl ai ot en , saylsl ot ewmi nsg. Fh oi grhtehri st er emapseorna t u r e s t s e h y v e s a tc s e u y m a s t s t e e d t m o t r u o b l n o e w ts h - te m e ma R k p e e e n re u a w p t u a t r b h e e le c m o E o a n j e li o n r r g g it y y a H o p f o p u l s ic s o a e la t ir i o n t n h s B e , r r u m in s a c sl e l ul d s. i n g Concentrating solar thermal collectors t sS e y o m s m t p e e e m r es a h tu m il r le e e r n t t s h io y a n s n e t e d c m a a ns b o b re v e q e u p . i r r i o n e v t i h d h o e e t d s e w b a c y t a e t s h r e e as t c , o a s m n h v a i e g ll n h c t e i o o r n n c a e l ntrating soonlanretahrebrymlaanl dd.evices may be used, installed on roof-tops or These generally resemble small parabolic troughs and use mirrors to reflect sunlight onto a central receiver containing a mineral oil. This heats up to very high temperatures which then passes through a heat exchanger to produce hot water or some other heated liquid. Because tohf etyh ea rhei gf ha vtoeumr ep de r taotru rseosmsey sct oe oml i sn gs uacphp l ai csa tt ihoensse, pcaa n i caucl ah ri el yv e , rt p tla ir r r s o g i v e P id i o e n w r d u o e s f r t t R r h ia o is l o s f te y w s c a t h e s n m o in ls o s . g t i y a n l tl t e h h d r e o i u n U g S h R , a il Sl s e o ig P la h o r , w g N e e n o rR ix o hi o s f C t s a h y r e o s tl m i e n m a ai .n in T he rt Jp uolwy e2r .0 T0 2h ,e aPnodwwear sRcoaopf ai sb l ae couf rpvreodv i (dni nogt q1 u7i t6e kpWa r oafb oc loi co)l i n g "The technology involved in these solar thermal systems is relatively simple, with two main types of collectors. Flat plate collectors are glazed, insulated panels containing an absorber surface which converts sunlight into heat".
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