fordított ciklusú gépek

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Fordított ciklusú gépek. Dr. Szakács Tamás adjunktus Óbudai Egyetem 1034, Budapest Bécsi út 96/B [email protected] Előadás tartalma. Bevezetés Fordított ciklusú gépek Belső körfolyamat tervezése Hűtő- és fűtőeszközök tervezése Számítási példák. Bevezetés. Gépek: - PowerPoint PPT Presentation

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  • Fordtott ciklus gpekDr. Szakcs Tams adjunktus

    budai Egyetem1034, Budapest Bcsi t 96/B

    [email protected]

  • Elads tartalma BevezetsFordtott ciklus gpekBels krfolyamat tervezseHt- s fteszkzk tervezseSzmtsi pldk

  • BevezetsGpek:Gpek, melyek a kzlt h talaktsval munkt termelnek. Pl.: idealizlt Carnot-ciklus, a megvalstott Otto-, Dzel-, vagy a Joule-ciklusok.Fordtott ciklus gpek:Fordtott ciklus gpek a ht termszetes ramlsnak irnyval szemben szlltjk, munkabefektetst, energiakzlst ignyelnek. Pl.: htszekrny, hszivatty

  • BevezetsA fordtott ciklus gpek jelentsgeEU tagllamainak nvekv energiafogyasztsaA villamosenergia hlzat nyri maximlis terhelsnek cskkentse (klimatizlsbl szrmaz energiaigny)

    A fordtott ciklus gpek alkalmasak arra, hogy a nvekv ignyek ellenre is mrskeljk a villamosenergia fogyasztst.

  • Fordtott ciklus gpekHtszekrnyLgkondcionl berendezsFtberendezsSzrtgp

  • A fordtott ciklus klimatizls a termszet hforrsbl nyer ht (pl.: a talajbl, vagy a szabadtri levegbl mg tlkzpi jszakkon is) melyet az plet belseje fel szlltja. A htkzeg a ht elnyelve keresztlhalad egy kls hcserln. Ezt a htkzeget egy kompresszor sszesrti, mely egy az pleten bell elhelyezett kondenztorban, hjt a helyisgbe leadja.Fts fordtott ciklus gpekkel

  • Elnyk: A fts egyik leggazdasgosabb mdja. Ftsre s htsre egyarnt alkalmas. Nem melegszik fel veszlyes mrtkben. lettartama 20 v is lehet. Szrt s pramentestett leveg.Kpes hasznostani a krzeti- s a hulladk ht, a kapcsolt h- s villamosenergia ellltsbl szrmaz ht, s a megjul hforrsokat.Fts fordtott ciklus gpekkel

  • Fajti:HordozhatAblakba/falba beptettosztott (split) rendszerektbb beltri s egy kltri egysggel rendelkez osztott rendszerekCshlzattal ptett rendszerekFordtott ciklus klimatizls

  • Mollier-diagramm kzelts tartomnnyal s nvleges htciklussal

  • Klimatizls napenergia segtsgvel

  • Abszorpcis ht elveKulcs krdsek a Megjthat h Eurpban-hoz (K4RES-H)Lehls nap segtsgvel WP3, Munka 3.5 Szerzds EIE/04/204/S07.38607

  • Abszorpcis ht elveKeep Cool Solar Coolingwww.energyagency.at

  • Abszorpcis ht elveKeep Cool Solar Coolingwww.energyagency.at

  • Adszorpcis ht elveKulcs krdsek a Megjthat h Eurpban-hoz (K4RES-H)Lehls nap segtsgvel WP3, Munka 3.5 Szerzds EIE/04/204/S07.38607

  • Adszorpcis ht elve

  • Ipari mret pletklimatizl

  • Kulcs krdsek a Megjthat h Eurpban-hoz (K4RES-H)Lehls nap segtsgvel WP3, Munka 3.5 Szerzds EIE/04/204/S07.38607Ipari mret pletklimatizl

  • A legtbb tlagos napenergia segtsgvel trtn klimatizls eljrsainak ttekintse

  • A legtbb tlagos napenergia segtsgvel trtn klimatizls eljrsainak ttekintse

  • Nedves leveg Mollier h-x diagrammja p=1 bar nyomsnl

  • Idealizlt Carnot-krfolyamatokkrnyezEgyszeres rendeltets hszivattyTbbrendeltets hszivattyErmvi turbinaSSSSHidegebb

  • Mennyi annak a htberendezsnek a htsi teljestmnye, amely adiabatikus srtsbl s ammnia htfolyadkkal rendelkez trfogatnvekedses dugattyciklusbl ll?A cseppfolysodsi hmrsklet 30 C, a prolgsi hmrsklet -10 C. A kompresszort szraz teltett gzzal lttk el. (x2 = 1). A cseppfolysts az x3 = 0pontig tart.Szmols plda1. Plda

  • Szlltott h a prologtatban 1kg htkzeg mellett:

  • Az 18000kg tmeg leveg hmrsklete t1 =80 C, pratartalma x1 =0,03 kg/kg. Ksztsen egy x4 =0,01 kg/kg szraz levegt htssel gy, hogy tartsa a kivezet hmrskletet, ahogy az a t1-en ll.Mennyi vznek kell elfolynia?Mennyi helvons szksges a htshez s az jrafts hozzadshoz?2. PldaSzmols plda

  • Ksznm a [email protected]

    **Reverse_cycle_AC.pdf*AMMONIA REFRIGERATION CYCLE_p639_final.pdf**7_Holter_Anlagenkonzepte.pdf*D23-solar-assisted-cooling.pdf*Published and produced by: sterreichische Energieagentur Austrian Energy AgencyOtto-Bauer-Gasse 6, A-1060 Vienna, Phone +43 (1) 586 15 24, Fax +43 (1) 586 15 24 - 40E-Mail: [email protected], Internet: http://www.energyagency.at

    *Published and produced by: sterreichische Energieagentur Austrian Energy AgencyOtto-Bauer-Gasse 6, A-1060 Vienna, Phone +43 (1) 586 15 24, Fax +43 (1) 586 15 24 - 40E-Mail: [email protected], Internet: http://www.energyagency.at

    **Published and produced by: sterreichische Energieagentur Austrian Energy AgencyOtto-Bauer-Gasse 6, A-1060 Vienna, Phone +43 (1) 586 15 24, Fax +43 (1) 586 15 24 - 40E-Mail: [email protected], Internet: http://www.energyagency.at

    *Published and produced by: sterreichische Energieagentur Austrian Energy Agency Otto-Bauer-Gasse 6, A-1060 Vienna, Phone +43 (1) 586 15 24, Fax +43 (1) 586 15 24 - 40 E-Mail: [email protected], Internet: http://www.energyagency.atThe DEC-process can be summarised as follows:1 -> 2 sorptive dehumidification of supply air; the process is almost adiabatic and the air is heated by the adsorption heat and the warmed wheel matrix coming from the regeneration side2 -> 3 pre-cooling of the supply air in counter-flow to the return air from the building3 -> 4 evaporative cooling of the supply air to the desired supply air humidity by means of a humidifier4 -> 5 supply air temperature and humidity are increased due to internal and external loads5 -> 6 return air from the building is cooled using evaporative cooling close to the saturation6 -> 7 the return air is pre-heated in counter-flow to the supply air by means of a highly efficient air-to-air heat exchanger, e.g. a heat recovery wheel7 -> 8 regeneration heat is supplied by a heating coil; this heating coil is driven by hot water; for instance by hot water generated by solar thermal collectors8 -> 9 regeneration process of the desiccant material; the water bound in the pores of the desiccant material of the sorption wheel is desorbed by means of regeneration air

    *Published and produced by: sterreichische Energieagentur Austrian Energy Agency Otto-Bauer-Gasse 6, A-1060 Vienna, Phone +43 (1) 586 15 24, Fax +43 (1) 586 15 24 - 40 E-Mail: [email protected], Internet: http://www.energyagency.atThe DEC-process can be summarised as follows:1 -> 2 sorptive dehumidification of supply air; the process is almost adiabatic and the air is heated by the adsorption heat and the warmed wheel matrix coming from the regeneration side2 -> 3 pre-cooling of the supply air in counter-flow to the return air from the building3 -> 4 evaporative cooling of the supply air to the desired supply air humidity by means of a humidifier4 -> 5 supply air temperature and humidity are increased due to internal and external loads5 -> 6 return air from the building is cooled using evaporative cooling close to the saturation6 -> 7 the return air is pre-heated in counter-flow to the supply air by means of a highly efficient air-to-air heat exchanger, e.g. a heat recovery wheel7 -> 8 regeneration heat is supplied by a heating coil; this heating coil is driven by hot water; for instance by hot water generated by solar thermal collectors8 -> 9 regeneration process of the desiccant material; the water bound in the pores of the desiccant material of the sorption wheel is desorbed by means of regeneration air

    *Warm and humid ambient air enters the slowly rotating desiccant wheel and is dehumidified by adsorption of water (1-2). Since the air is heated up by the adsorption heat, a heat recovery wheel is passed (2-3), resulting in a significant precooling of the supply air stream. Subsequently, the air is humidified and further cooled by a controlled humidifier (3-4), according to the desired temperature and humidity of the supply air stream. The exhaust air stream of the rooms is humidified (6-7) close to the saturation point to exploit the full cooling potential in order to allow an effective heat recovery (7-8). Finally, the sorption wheel has to be regenerated (9-10) by applying heat in a comparatively low temperature range from 50C-75C, to allow a continuous operation of the dehumidification process.B: Heating caseIn periods of low heating demand, heat recovery from the exhaust air stream and enthalpy exchange by using a fast rotating mode of the desiccant wheel may be sufficient. In cases of increased heating demand, heat from the solar thermal collectors and, if necessary, from a backup heat source (4-5) is applied.Flat plate solar thermal collectors can be applied normally as a heating system in solar assisted desiccant cooling systems. The solar system may consist of collectors using water as fluid and a hot water storage, to increase the utilisation of the solar system. This configuration requires an additional water/air heat exchanger, to connect the solar system to the air system. An alternative solution, leading to lower investment cost, is the direct supply of regeneration heat by means of solar air collectors.D23-solar-assisted-cooling.pdf*