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sbian245_preview_01.pdf

Meyers Vænge 15, 2450 København SV E-post sbi@sbi.aau.dk www.sbi.dk Der gøres opmærksom på, at denne publikation er omfattet af ophavsretsloven 5 Indhold Forord ................................................................................................... 6 Indledning ............................................................................................. 7 Baggrund ........................................................................................... 7 Anvisningens brug ............................................................................ 8 1 Oplevelse og beskrivelse af lyd og støj ........................................... 10 1.1 Lyd ............................................................................................. 10 1.2 Oplevet lydstyrke – fysiologisk måleenhed ............................... 14 1.3 Støj ............................................................................................ 19 1.4 Udendørs støj ............................................................................ 20 1.5 Lyd i boliger ............................................................................... 21 2 Grundlæggende akustiske begreber ............................................... 23 2.1 Lyd, svingninger og bølger ........................................................ 23 2.2 Bygningsakustiske begreber ..................................................... 30 2.3 Rumakustiske begreber ............................................................ 33 3 Lydisolation – beregningsmodeller ................................................. 39 3.1 Luftlydisolation .......................................................................... 40 3.2 Trinlydniveau ..............................................................................74 3.3 Sammenhæng mellem reduktionstal og trinlydniveau .............. 88 3.4 Beregningsværktøjer................................................................. 89 4 Lydisolation – måling og vurdering .................................................. 91 4.1 Måle- og vurderingsmetoder ..................................................... 91 4.2 Måling og vurdering af luftlydisolation ...................................... 93 4.3 Måling og vurdering af trinlydniveau ....................................... 101 4.4 Andre typer lydmålinger .......................................................... 106 Litteratur ........................................................................................... 108 Supplerende litteratur ..................................................................... 111 Appendiks A.

varme_og_koeleanlaeg_i_bygninger_preview.pdf

D S 4 69 :2 01 3 3 DS 469:2013 Indholdsfortegnelse Side Fælles forudsætning Forord..................................................................................................................................................................................... 6 Indledning ............................................................................................................................................................................. 6 1 Anvendelsesområde .................................................................................................................................................. 7 2 Normative referencer ................................................................................................................................................. 8 3 Definitioner .................................................................................................................................................................. 10 4 Symboler og enheder ................................................................................................................................................ 13 5 Generelle krav og forudsætninger .......................................................................................................................... 14 5.1 Termisk indeklima ............................................................................................................................................ 14 5.1.1 Opholdsrum, kontorer, mødelokaler, undervisningsrum og lignende ....................................... 14 5.1.2 Andre rum ............................................................................................................................................ 15 5.2 Opholdszone ..................................................................................................................................................... 15 5.3 Energi ............................................................................................................................................................... 15 5.4 Behov for mekanisk køling .............................................................................................................................. 15 5.5 Frostsikring af rum ........................................................................................................................................... 15 5.6 Sikkerhed, sundhed og ulemper .................................................................................................................... 15 Varmeanlæg 6 Dimensionering af varmeanlæg .............................................................................................................................. 16 6.1 Dimensionerende udetemperatur ................................................................................................................. 16 6.2 Dimensionerende rumtemperatur ................................................................................................................. 16 6.3 Dimensionerende varmetab ........................................................................................................................... 16 6.4 Dimensionerende gulvoverfladetemperatur ................................................................................................ 16 6.5 Dimensionerende indblæsningstemperatur ................................................................................................ 17 6.6 Varmegiveres varmeydelse ............................................................................................................................ 17 6.6.1 Genopvarmningseffekt ...................................................................................................................... 17 6.7 Brugsvandsopvarmning ................................................................................................................................. 17 6.8 Forsyningsanlæggets varmeydelse .............................................................................................................. 17 6.8.1 Dimensionerende varmebehov ........................................................................................................ 18 6.8.2 Varmepumper med elsupplement ................................................................................................... 18 6.8.3 Andre varmekilder med elsupplement ............................................................................................ 18 6.9 Centralvarmeanlæg ......................................................................................................................................... 18 6.9.1 Dimensionerende frem- og returløbstemperatur .......................................................................... 18 6.9.2 Forsyningsanlæggets driftsforhold .................................................................................................. 19 7 Udformning af varmeanlæg ..................................................................................................................................... 20 7.1 Varmegivere ...................................................................................................................................................... 20 7.1.1 Placering og udformning ................................................................................................................... 20 7.1.2 Afskærmning og rengøring ............................................................................................................... 20 7.1.3 Unødvendigt varmeforbrug .............................................................................................................. 20 7.2 Fordelingssystem ............................................................................................................................................. 20 7.2.1 Udformning ......................................................................................................................................... 20 7.2.2 Reduktion af varmetab ....................................................................................................................... 21 7.2.3 Sikring mod skader ............................................................................................................................. 21 7.2.4 Støj ........................................................................................................................................................ 21 7.2.5 Pumper ................................................................................................................................................. 21 7.2.6 Indregulering ....................................................................................................................................... 22 8 Styring af varmeanlæg .............................................................................................................................................. 23 8.1 Rumtemperaturregulering .............................................................................................................................. 23 8.1.1 Gulvvarme i mindre baderum i boliger ........................................................................................... 23 8.2 Fremløbstemperaturstyring ........................................................................................................................... 24 8.3 Tidsstyring af opvarmningen ......................................................................................................................... 24 C O P Y R IG H T © D an is h S ta nd ar ds F ou nd at io n.