{"id":744,"date":"2020-12-22T14:59:24","date_gmt":"2020-12-22T14:59:24","guid":{"rendered":"https:\/\/lka.lv\/?p=744"},"modified":"2024-08-05T18:45:09","modified_gmt":"2024-08-05T18:45:09","slug":"siltumsuknis-apkurei","status":"publish","type":"post","link":"https:\/\/lka.lv\/index.php\/2020\/12\/22\/siltumsuknis-apkurei\/","title":{"rendered":"Siltums\u016bknis &#8211; apkurei"},"content":{"rendered":"<h2>Siltums\u016bknis &#8211; apkurei m\u0113s \u0146emam siltumu no plan\u0113tas Zeme<\/h2>\n<p>Ar m\u0113r\u0137i p\u0101rvar\u0113t ziemas aukstumu m\u0101ju \u012bpa\u0161nieki mekl\u0113 ener\u0123iju un piem\u0113rotus apkures katlus, apskau\u017eot tos laim\u012bgos, kuru m\u0101j\u0101s ir dabasg\u0101zes padeves l\u012bnijas. Katru ziemu kr\u0101sn\u012bs sadedzina t\u016bksto\u0161iem tonnu koksnes, ogles, naftas produktus, pat\u0113r\u0113 megavatus elektr\u012bbas par astronomiskiem daudzumiem, kas katru gadu palielin\u0101s, un \u0161\u0137iet, ka citas izejas vienk\u0101r\u0161i nav. Tikm\u0113r viens past\u0101v\u012bgs siltumener\u0123ijas avots vienm\u0113r atrodas net\u0101lu no m\u016bsu m\u0101j\u0101m, tom\u0113r Zemes iedz\u012bvot\u0101jiem ir diezgan gr\u016bti to paman\u012bt \u0161\u0101d\u0101 sp\u0113j\u0101. Ko dar\u012bt, ja m\u0101ju apkurei izmantojam savas plan\u0113tas siltumu? Un tam ir piem\u0113rota ier\u012bce &#8211; \u0123eoterm\u0101lais siltums\u016bknis.<\/p>\n<h3>Siltums\u016bk\u0146a v\u0113sture<\/h3>\n<p>\u0160\u0101du ier\u012b\u010du darb\u012bbas teor\u0113tisko pamatojumu 1824. gad\u0101 sniedza fran\u010du fizi\u0137is Sadi Karnots, kur\u0161 public\u0113ja savu vien\u012bgo darbu par tvaika dzin\u0113jiem, kur\u0101 tika aprakst\u012bts termodinamiskais cikls, kuru fizi\u0137is Benoits Kliperons p\u0113c 10 gadiem matem\u0101tiski un grafiski apstiprin\u0101ja un sauca par \u201cKarnotu ciklu\u201d.<\/p>\n<p>Pirmo siltums\u016bk\u0146a laboratorijas modeli izveidoja ang\u013cu fizi\u0137is Viljams Tomsons lords Kelvins 1852. gad\u0101, veicot eksperimentus ar termodinamiku. Starp citu, siltums\u016bknis savu nosaukumu ieguva no lorda Kelvina.<br \/>\nR\u016bpniecisko siltums\u016bk\u0146u modeli 1856. gad\u0101 uzb\u016bv\u0113ja austrie\u0161u kalnr\u016bpniec\u012bbas in\u017eenieris P\u012bters fon R\u012bters, kur\u0161 izmantoja \u0161o ier\u012bci s\u0101ls\u016bdens iztvaiko\u0161anai un s\u0101ls purvu novad\u012b\u0161anai saus\u0101 s\u0101ls ieg\u016b\u0161anai.<\/p>\n<h3>Siltums\u016bk\u0146a konstrukcija un darb\u012bbas princips<\/h3>\n<p>Nogrimstot zemes garoz\u0101, uz kuras virsmas m\u0113s dz\u012bvojam un kuras biezums uz sauszemes ir aptuveni 50\u201380 km, t\u0101 temperat\u016bra paaugstin\u0101s &#8211; tas ir saist\u012bts ar magmas aug\u0161\u0113j\u0101 sl\u0101\u0146a tuvumu, kura temperat\u016bra ir aptuveni 1300 \u00b0 C. 3 metru vai vair\u0101k dzi\u013cum\u0101 augsnes temperat\u016bra jebkur\u0101 gada laik\u0101 ir pozit\u012bva, ar katru dzi\u013cuma kilometru t\u0101 paaugstin\u0101s vid\u0113ji par 3\u201310 \u00b0 \u0421. Augsnes temperat\u016bras paaugstin\u0101\u0161an\u0101s ar t\u0101s dzi\u013cumu ir atkar\u012bga ne tikai no klimatisk\u0101s zonas, bet ar\u012b no augsnes \u0123eolo\u0123ijas, k\u0101 ar\u012b no endog\u0113nas aktivit\u0101tes noteikt\u0101 Zemes apgabal\u0101. Piem\u0113ram, \u0100frikas kontinenta dienvidu da\u013c\u0101 temperat\u016bras paaugstin\u0101\u0161an\u0101s uz augsnes dzi\u013cuma kilometru ir 8 \u00b0 C, bet Oregonas \u0161tat\u0101 (ASV), kuras teritorij\u0101 ir atz\u012bm\u0113ta diezgan augsta endog\u0113na aktivit\u0101te &#8211; 150 \u00b0 C uz kilometru dzi\u013cuma. Tom\u0113r, lai efekt\u012bvi darbotos siltums\u016bknis, \u0101r\u0113jai \u0137\u0113dei, kas tai pieg\u0101d\u0101 siltumu, nav nepiecie\u0161ams aprakt simtiem metru pazem\u0113 &#8211; jebkura vide, kuras temperat\u016bra p\u0101rsniedz 0 \u00b0 C, var b\u016bt siltumener\u0123ijas avots.<\/p>\n<p>Siltums\u016bknis p\u0101rnes siltuma ener\u0123iju no gaisa, \u016bdens vai augsnes, paaugstinot temperat\u016bru p\u0101rneses laik\u0101 l\u012bdz vajadz\u012bgajai temperat\u016brai dzes\u0113\u0161anas \u0161\u0137idruma saspie\u0161anas (saspie\u0161anas) d\u0113\u013c. Ir divi galvenie siltums\u016bk\u0146u veidi &#8211; kompresija un sorbcija.<br \/>\nNeskatoties uz mulsino\u0161o nosaukumu, kompresijas siltums\u016bk\u0146i ir nevis apkure, bet gan dzes\u0113\u0161anas ier\u012bces, jo tie darbojas p\u0113c t\u0101da pa\u0161a principa k\u0101 jebkur\u0161 ledusskapis vai gaisa kondicionieris. At\u0161\u0137ir\u012bba starp siltums\u016bkni un mums labi zin\u0101m\u0101m sald\u0113\u0161anas iek\u0101rt\u0101m ir t\u0101da, ka t\u0101 darb\u012bbai parasti ir nepiecie\u0161amas divas \u0137\u0113des &#8211; iek\u0161\u0113j\u0101, kur\u0101 cirkul\u0113 dzes\u0113t\u0101js, un \u0101r\u0113j\u0101, ar dzes\u0113\u0161anas \u0161\u0137idruma apriti.<\/p>\n<p><strong>\u0160\u012bs ier\u012bces darb\u012bbas laik\u0101 dzes\u0113t\u0101js iek\u0161\u0113j\u0101 kont\u016br\u0101 iziet \u0161\u0101dus posmus:<\/strong><\/p>\n<ul>\n<li>atdzes\u0113ts dzes\u0113t\u0101js \u0161\u0137idrum\u0101 non\u0101k iztvaic\u0113t\u0101j\u0101 caur kapil\u0101ra atveri. Straujas spiediena pazemin\u0101\u0161an\u0101s ietekm\u0113 dzes\u0113t\u0101js iztvaiko un p\u0101rv\u0113r\u0161as g\u0101zveida st\u0101vokl\u012b. P\u0101rvietojoties pa iztvaic\u0113t\u0101ja izliektaj\u0101m caurul\u0113m un kust\u012bbas laik\u0101 saskaroties ar g\u0101zveida vai \u0161\u0137idru siltumnes\u0113ju, dzes\u0113t\u0101js no t\u0101 sa\u0146em zemas temperat\u016bras siltumener\u0123iju, p\u0113c kuras tas non\u0101k kompresor\u0101;<\/li>\n<li>kompresora kamer\u0101 dzes\u0113t\u0101js tiek saspiests, savuk\u0101rt t\u0101 spiediens strauji palielin\u0101s, kas izraisa dzes\u0113t\u0101ja temperat\u016bras paaugstin\u0101\u0161anos;<\/li>\n<li>no kompresora karstais dzes\u0113\u0161anas \u0161\u0137idrums seko kont\u016brai kondensatora spol\u0113, kas darbojas k\u0101 siltummainis &#8211; \u0161eit dzes\u0113t\u0101js atst\u0101j siltumu (apm\u0113ram 80\u2013130 \u00b0 C) dzes\u0113\u0161anas \u0161\u0137idrumam, kas cirkul\u0113 m\u0101jas apkures lok\u0101. Zaud\u0113jis liel\u0101ko da\u013cu siltumener\u0123ijas, dzes\u0113t\u0101js atgrie\u017eas \u0161\u0137idr\u0101 st\u0101vokl\u012b;<br \/>\nizejot caur izple\u0161an\u0101s v\u0101rstu (kapil\u0101ru) &#8211; tas atrodas siltums\u016bk\u0146a iek\u0161\u0113j\u0101 kont\u016br\u0101, sekojot siltummainim &#8211; dzes\u0113t\u0101j\u0101 samazin\u0101s atliku\u0161ais spiediens, p\u0113c kura tas non\u0101k iztvaic\u0113t\u0101j\u0101. No \u0161\u012b br\u012b\u017ea darba cikls tiek atk\u0101rtots v\u0113lreiz.<\/li>\n<\/ul>\n<p>T\u0101d\u0113j\u0101di siltums\u016bk\u0146a iek\u0161\u0113j\u0101 strukt\u016bra sast\u0101v no kapil\u0101ra (izple\u0161an\u0101s v\u0101rsta), iztvaic\u0113t\u0101ja, kompresora un kondensatora. Kompresora darb\u012bbu kontrol\u0113 elektronisks termostats, kas p\u0101rtrauc kompresora str\u0101vas padevi un t\u0101d\u0113j\u0101di p\u0101rtrauc siltuma \u0123ener\u0113\u0161anas procesu, kad m\u0101j\u0101 tiek sasniegta iestat\u012bt\u0101 gaisa temperat\u016bra. Kad temperat\u016bra nokr\u012btas zem noteikta l\u012bme\u0146a, termostats autom\u0101tiski iesl\u0113dz kompresoru.<br \/>\nFreoni R-134a vai R-600a cirkul\u0113 k\u0101 dzes\u0113t\u0101js siltums\u016bk\u0146a iek\u0161\u0113j\u0101 kont\u016br\u0101 &#8211; pirmais ir balst\u012bts uz tetrafluoret\u0101nu, otrais &#8211; uz izobut\u0101nu. Abi \u0161ie dzes\u0113t\u0101ji ir dro\u0161i Zemes ozona sl\u0101nim un ir videi draudz\u012bgi. Kompresijas siltums\u016bk\u0146us var vad\u012bt ar elektromotoru vai iek\u0161dedzes motoru.<br \/>\nSorbcijas siltums\u016bk\u0146os tiek izmantota absorbcija &#8211; fizik\u0101li \u0137\u012bmiskais process, kura laik\u0101 g\u0101zes vai \u0161\u0137idruma tilpums palielin\u0101s cita \u0161\u0137idruma ietekm\u0113 temperat\u016bras un spiediena ietekm\u0113.<\/p>\n<p>Absorbcijas <a href=\"https:\/\/www.viessmann-shop.lv\/product-category\/siltumsukni\/\">siltums\u016bk\u0146i<\/a> ir apr\u012bkoti ar dabasg\u0101zes termisko kompresoru. Vi\u0146u kont\u016br\u0101 ir dzes\u0113t\u0101js (parasti amonjaks), kas iztvaiko zem\u0101 temperat\u016br\u0101 un spiedien\u0101, vienlaikus absorb\u0113jot siltuma ener\u0123iju no apk\u0101rt\u0113j\u0101s cirkul\u0101cijas \u0137\u0113des. Tvaika st\u0101vokl\u012b dzes\u0113jo\u0161ais l\u012bdzeklis non\u0101k siltummai\u0146a absorbator\u0101, kur \u0161\u0137\u012bdin\u0101t\u0101ja (parasti \u016bdens) kl\u0101tb\u016btn\u0113 tas tiek absorb\u0113ts un siltums tiek p\u0101rnests uz \u0161\u0137\u012bdin\u0101t\u0101ju. \u0160\u0137\u012bdin\u0101t\u0101js tiek pieg\u0101d\u0101ts ar termosifonu, kas cirkul\u0113 caur spiediena starp\u012bbu starp dzes\u0113t\u0101ju un \u0161\u0137\u012bdin\u0101t\u0101ju, vai mazjaudas s\u016bkni lieljaudas iek\u0101rt\u0101s.<br \/>\nApvienojot aukstuma\u0123entu un \u0161\u0137\u012bdin\u0101t\u0101ju ar da\u017e\u0101d\u0101m vir\u0161anas temperat\u016br\u0101m, aukstuma\u0123enta pieg\u0101d\u0101tais siltums liek abiem iztvaikot. Dzes\u0113\u0161anas \u0161\u0137idrums tvaika st\u0101vokl\u012b, kam ir augsta temperat\u016bra un spiediens, caur kont\u016bru non\u0101k kondensator\u0101, p\u0101rv\u0113r\u0161as \u0161\u0137idr\u0101 st\u0101vokl\u012b un izdala siltumu siltumt\u012bkla siltummainim. P\u0113c izie\u0161anas caur izple\u0161an\u0101s v\u0101rstu dzes\u0113jo\u0161ais l\u012bdzeklis atgrie\u017eas s\u0101kotn\u0113j\u0101 termodinamisk\u0101 st\u0101vokl\u012b, l\u012bdz\u012bg\u0101 veid\u0101 \u0161\u0137\u012bdin\u0101t\u0101js atgrie\u017eas s\u0101kotn\u0113j\u0101 st\u0101vokl\u012b.<br \/>\nAbsorbcijas siltums\u016bk\u0146u priek\u0161roc\u012bbas ir sp\u0113ja darboties no jebkura siltuma ener\u0123ijas avota un kust\u012bgu elementu piln\u012bga neesam\u012bba, t.i., beztrok\u0161\u0146a. Tr\u016bkumi &#8211; maz\u0101ka jauda, \u200b\u200bsal\u012bdzinot ar kompresijas vien\u012bb\u0101m, augstas izmaksas konstrukcijas sare\u017e\u0123\u012bt\u012bbas un nepiecie\u0161am\u012bbas d\u0113\u013c izmantot korozijiztur\u012bgus, gr\u016bti apstr\u0101d\u0101jamus materi\u0101lus.<\/p>\n<p>Adsorbcijas siltums\u016bk\u0146os tiek izmantoti t\u0101di materi\u0101li k\u0101 silikagels, aktiv\u0113t\u0101 ogle vai ceol\u012bts. Pirmaj\u0101 darba posm\u0101, ko sauc par desorbcijas f\u0101zi, siltumener\u0123ija tiek pieg\u0101d\u0101ta siltummai\u0146a kamerai, kas no iek\u0161puses ir p\u0101rkl\u0101ta ar sorbentu, piem\u0113ram, no g\u0101zes deg\u013ca. Sild\u012b\u0161ana izraisa dzes\u0113t\u0101ja (\u016bdens) iztvaiko\u0161anu, ieg\u016btais tvaiks tiek nog\u0101d\u0101ts otraj\u0101 siltummain\u012b, kas pirmaj\u0101 f\u0101z\u0113 izdala siltumu, kas ieg\u016bts tvaika kondens\u0101cijas laik\u0101 apkures sist\u0113mai. Piln\u012bga sorbenta \u017e\u0101v\u0113\u0161ana un \u016bdens kondens\u0101cijas pabeig\u0161ana otraj\u0101 siltummai\u0146\u0101 pabeidz pirmo darba posmu &#8211; siltumener\u0123ijas padeve pirm\u0101 siltummai\u0146a kamer\u0101 apst\u0101jas. Otraj\u0101 posm\u0101 kondens\u0113t\u0101 \u016bdens siltummainis k\u013c\u016bst par iztvaic\u0113t\u0101ju, pieg\u0101d\u0101jot siltuma ener\u0123iju no \u0101r\u0113j\u0101s vides dzes\u0113t\u0101jvielai. T\u0101 k\u0101 spiediena attiec\u012bba sasniedz 0,6 kPa, saskaroties ar siltumu no \u0101r\u0113j\u0101s vides, dzes\u0113jo\u0161ais l\u012bdzeklis iztvaiko &#8211; \u016bdens tvaiki non\u0101k pirmaj\u0101 siltummain\u012b, kur tie adsorb\u0113jas sorbent\u0101. Siltums, ko tvaiks izdala adsorbcijas proces\u0101, tiek p\u0101rnests uz apkures sist\u0113mu, p\u0113c kura cikls tiek atk\u0101rtots. J\u0101atz\u012bm\u0113, ka adsorbcijas siltums\u016bk\u0146i nav piem\u0113roti lieto\u0161anai m\u0101jsaimniec\u012bb\u0101 &#8211; tie ir paredz\u0113ti tikai \u0113k\u0101m ar lielu plat\u012bbu (no 400 m2), maz\u0101k jaud\u012bgi mode\u013ci joproj\u0101m tiek izstr\u0101d\u0101ti.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Siltums\u016bknis &#8211; apkurei m\u0113s \u0146emam siltumu no plan\u0113tas Zeme Ar m\u0113r\u0137i p\u0101rvar\u0113t ziemas aukstumu m\u0101ju \u012bpa\u0161nieki mekl\u0113 ener\u0123iju un piem\u0113rotus apkures katlus, apskau\u017eot tos laim\u012bgos,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":746,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Siltums\u016bknis - apkurei - LKA<\/title>\n<meta name=\"description\" content=\"Siltums\u016bknis - 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