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Energies 2022, 15, 1008 Figure 9. Dry bulb Temperature recorded by the weather station and from the DB climate data file foFrigthuereC9y.pDrurys sbiumlbulTaetimonpse.rature recorded by the weather station and from the DB climate data file for the Cyprus simulations. Figure 10 represents the evolution of the calculated building cooling needs and the energyFigduelrieve1r0edreptoretsheentbsutihlde ienvgolbuytiothneoTf EthSeSec2ablcsuylastemd btuoilsdaitnisgfycotohleinsgpnacee’dsscaonodlinthge neneedrsg.y delivered to the building by the TESSe2b system to satisfy the space’s cooling needs. Figure 10. Cooling delivered to the house by the TESSe2b system and cooling needs obtained by the DFBigsuiumreu1la0t..iCoCnoso.lliing delliivered tto tthe house by tthe TESSe2b systtem and coolliing needs obtained by the DB simulations. The energy delivered by the TESSe2b system to the building that week to meet its The energy delivered by the TESSe2b system to the building that week to meet its coolinTghneeednserwgaysd8e0l6i.v7ekreWdhb,ywthhileeTthEeSvSae2lubespyrsetdemictetod bthyethbeusilidminuglatihoantsweaesk84to6.m7 keWethit,s cooling needs was 806.7 kWh, while the value predicted by the simulations was 846.7 kWh, s h c o o o w l i i n n g g n a e r e e d l a s t wi v a e s d 8 i 0 f f 6 e . 7 r e k n Wc e h o , f w 5 h . 1 i l % e , t h w e h v i a c h l u i e s p c r o e n d s i i c d t e e r d e b d y a t c h c e e p s i t ma b u l e l a . t i o n s w a s 8 4 6 . 7 k W h , showing a relative difference of 5.1%, which is considered acceptable. 13 of 16 showIninFgigaurela1t1iv, ethdeiffseorleanrceraodfia5t.1io%n, wcahlciuchlaitsedcobnysidthereedsoaftcwceaprteabalned. measured by the In Figure 11, the solar radiation calculated by the software and measured by the weathIenr sFtiagtuiorne i1s1s,htohwe ns.oPlarphraodsiaistion tchaelcuolastte,danbdyththeedseomftowsaitre, danesdpimteebaseuinrgedlobcaytetdhe weather station is shown. Paphos is on the coast, and the demo site, despite being located nweaeraPthaeprhsotsa,tiwonasisaslhitotlwe nfu. rPtahperhoinslaisnodn, wthheichoaysite,ladned tahselidgehmtlyo hsitgeh, edredspaitlye btheeinrmg laolcamte-d near Paphos, was a little further inland, which yielded a slightly higher daily thermal pnlietuardPe.apHhoows,ewvears, aitliwttalesfcuornthsiedreirneldantdh,awt thhicehaygireledmedenatsbliegthwtleyenhitgheerwdeaitlhyetrhderamtaalwaams- amplitude. However, it was considered that the agreement between the weather data was apdleiqtudaete. Hfoorwtheevaenr,ailtyswisapsecrofnorsmidedre.d that the agreement between the weather data was adequate for the analysis performed. adequate for the analysis performed. Energies 2022, 14, x FOR PEER REVIEW 14 of 16 Figure 11. Solar radiation intensity on a horizontal surface recorded by the weather station and from Figure 11. Solar radiation intensity on a horizontal surface recorded by the weather station and from thFtehigeDuDBreBc1lci1mli.mSaotaeltaedradrtatdafiiafiletlieofonfroirtnhteheneCsCyitpyprournussasishmiomuruilzalotaintoitonansl.s.urfacerecordedbytheweatherstationandfrom the DB climate data file for the Cyprus simulations. sumption. The results presented are representative of most of the cooling season days, in- Figures 12 and 13 present the DHW TES tank performance based on the monitoring Figures 12 and 13 present the DHW TES tank performance based on the monitoring dicating that the DHW TES tank was almost fully charged continually, and the total mass data recorded on 24 August 2019. During the cooling season, the solar collectors only data reFcigourdresd1o2na2n4dA1u3gpursets2e0n1t9t.hDeuDrHinWg thTeEcSotoalninkgpserafosormn,atnhceesoblaasredcoollnectthoersmoonnlyitoprion-g of the PCM was fully melted (Figure 12). provided thermal energy to the DHW TES tank. The level of charge of the DHW TES vdidaetad rtehceorrmdeadl eone2rg4yAtuogtuhset 2D0H19W. DTuErSintganthke. cTohoelinlegvesel aosfocnh, athrgeesolfatrhceolDleHctWorsToEnSlytapnrko- The discharge of the thermal energy to the DHW is presented in Figure 13. The pro- tank depended on the balance between the solar energy available and the rate of DHW dveipdenddtehderomn atlhenbearlgayncteo btheetwDeHenWthTeEsSoltarnken. eTrhgey laevaeillaobf lcehanrgdethoef trhaeteDoHf WDHTWESctoan-k cess was characterized by a large heat transfer rate that decreased as the process pro- consumption. The results presented are representative of most of the cooling season days, depended on the balance between the solar energy available and the rate of DHW con- gressed. The initial high value of the heating rate was due to the high temperature inside indicating that the DHW TES tank was almost fully charged continually, and the total mass the DHW TES tank. of the PCM was fully melted (Figure 12). Figure 12. DHW TES tank temperature on 24 of August 2019. Figure 12. DHW TES tank temperature on 24 of August 2019.PDF Image | Latent Thermal Energy Storage Application
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