calcul hidraulic ppr-henco - instalatii termice
DESCRIPTION
Calculul necesarului de calduraTRANSCRIPT
Rezistenta termica specifica a elem. de constructie
Conform STAS 6472-1989PE Perete exterior R = 1.752 mp x K / W
1 Coeficient de convectie la interior 8 W / m x K2 Coeficient de convectie la exterior 24 W / m x K
STRATIFICATIE ELEMENT Grosime Densitate Lambda RstratNr Material m kg/mc W / m x K mp x K / W
1 Caramizi pline 0.350 1800 0.800 0.4372 Tencuiala 0.010 1700 0.870 0.0113 Polistiren 0.050 20 0.044 1.136
TOTALURI: 0.410 1580 1.585
PI Perete interior R = 0.449 mp x K / W1 Coeficient de convectie la interior 8 W / m x K2 Coeficient de convectie la exterior 8 W / m x K
STRATIFICATIE ELEMENT Grosime Densitate Lambda RstratNr Material m kg/mc W / m x K mp x K / W
1 Caramizi pline 0.150 1800 0.800 0.1872 Tencuiala interioara 0.010 1700 0.870 0.011
TOTALURI: 0.160 1794 0.199
PD Pardoseala R = 0.844 mp x K / W1 Coeficient de convectie la interior 8 W / m x K2 Coeficient de convectie la exterior 8 W / m x K
STRATIFICATIE ELEMENT Grosime Densitate Lambda RstratNr Material m kg/mc W / m x K mp x K / W
1 Placa Beton 0.600 2400 1.620 0.3702 Sapa autonivelanta 0.200 1600 1.030 0.1943 Pietris compactat 0.200 1800 0.7004 Sapa slab armata 0.030 1600 1.030 0.029
TOTALURI: 1.030 2105 0.594
PT Planseu terasa R = 2.566 mp x K / W1 Coeficient de convectie la interior 8 W / m x K2 Coeficient de convectie la exterior 24 W / m x K
STRATIFICATIE ELEMENT Grosime Densitate Lambda RstratNr Material m kg/mc W / m x K mp x K / W
1 Placa Beton 0.150 2400 1.620 0.0932 Tencuiala interioara 0.005 1700 0.8704 Covor PVC 0.010 1600 0.290 0.0344 Polistiren 0.100 20 0.044 2.273
TOTALURI: 0.265 1458 2.400
a i =a e =
a i =a e =
a i =a e =
a i =a e =
CALCULUL NECESARULUI DE CĂLDURĂD
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L i V na Qi1 Qi2 Qi QAo Ac
[-] [-] [m] [m] [mp] [mp] [mp] [-] [K] [-] W [-] [-] [-] W m [-] W W W W
D01 Sala CT Tc= 12 At= 46.98 Rm= 3.50PE V 2.22 2.65 5.88 5.88 1.752 1.05 -18 12 30 1 106PE S 3.07 2.65 8.14 2.48 5.66 1.752 1.05 -18 12 30 1 102UE S 0.90 2.10 1.89 1.89 0.550 1.20 -18 12 30 1 124FE S 0.90 0.65 0.59 0.59 0.400 1.20 -18 12 30 1 53PD - 8.00 0.840 1.00 10 12 2 1 19
= 30 403 -5.00 5.90 1.0090 407 9.1 0.066 7.45 21.20 0.45 303 142 303 710
Dt CM v4/3
m2K/W [OC] [OC]m4/3
m3 [h-1]s4/3
Dt
Calculul pierderilor de sarcina
Tabel pentru calculul hidraulic Retea : interioara
PPr si Henco75
10Agent termic : apa calda 65
Nr. Trons.Q Q Q l Di d v R Rl Σξ Z Rl+Z Σ(Rl+Z)W mc/h kg/h m mm toli m/s - mm H2O
1.1 2,384 0.210 205.03 10 12 1/2" 0.18 3.30 33.0 6.5 10.43 43.43 43.43
1.2 5,966 0.526 513.08 1.5 15 1/2" 0.36 11.00 16.5 3.5 22.47 38.97 82.40
1.3 7,714 0.680 663.41 7 22 3/4" 0.31 6.50 45.5 3.5 16.66 62.16 144.56
1.4 10,200 0.900 877.21 9 22 3/4" 0.40 10.00 90.0 3.5 27.74 117.74 262.30
1.5 11,583 1.022 996.15 1 22 3/4" 0.44 12.00 12.0 4.2 40.28 52.28 314.57
1.6 22,866 2.017 1966.50 3 22 3/4" 0.88 40.00 120.0 5.2 199.46 319.46 581.76
t tur =t retur =
mm H2O/m mm H2O mm H2O mm H2O
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