KS F 2912-2008 Calculation and test method for heat output of prefab hydronic radiant floor panel《干式温水地热板材的热输出量计算与试验方法》.pdf

1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS F 2912 KS F 2912:2008 2008 12 26 http:/www.kats.go.krKS F 2912:2008 : ( ) ( ) ( )ANC ( ) ( ) : (http:/www.standard.go.kr) ： ： 2008 12 26 2008-0957 ： ： ( 02-509-7290) (http:/www.kats.go.kr). 10 5 , . KS F 2912:2008 Calculation and test method for heat outp

2、ut of prefab hydronic radiant floor panel , . . , . 1 . . , . . 2 . . ( ) . ISO 13370, Thermal performance of buildings Heat transfer via the ground Calculation methods 3 . 3.1 , , , 3.1.1 KS F 2912:2008 2 3.1.2 , 3.1.3 3.1.4 , 3.2 3.2.1 (i) 3.3 . a) b) ( ) c) d) ( ) e) 3.4 3.4.1 (qi) . 3.4.2 (qimax

3、) 3.4.3 (qe) , 3.4.4 () , HCiqq= 3.5 KS F 2912:2008 3 3.5.1 (maxF ) 3.5.2 (F ) 3.5.3 )(F ( i) 3.6 3.6.1 (H) iRiVRVH=ln3.6.2 (m) Him += 3.6.3 () 4 . dom External diameter of the pipe dim Internal diameter of the pipe KHW/m2 Equivalent heat transmission coefficient kfin Fin efficiency of heat conducti

4、ng plates kCL Equivalent heat transmission coefficient of heat conducting layer LWLm Length of heat conducting plates LGm Gap between heat conducting plates LUm Width of U-shape of heat conducting plates U Lfinm Fin length l m Characteristic length of fin qHCW/m2Heat flow between heating medium and

5、conducting layer KS F 2912:2008 4 qiW/m2Heat flow density at the floor surface qidesW/m2Design heat flow density qimaxW/m2Limit heat flow density qeW/m2Downward heat flow density RHCm2 /W Thermal resistance between heating medium and conducting layer Rim2 /W Upward heat transmission resistance of th

6、e floor structure Rem2 /W Downward heat transmission resistance of the floor structure sWLm Thickness of heat conducting device T m Pipe spacing U W/(m2 ) U-value of the floor structure W/(m2 ) Heat exchange coefficient F Average floor surface temperature Fmax Maximum permissible floor surface tempe

7、rature i Design indoor room temperature m Temperature of the heating medium R Return temperature of heating medium V Supply temperature of heating medium e Temperature in a room under the floor heated room H Heating medium differential temperature Hmax Maximum permissible mean temperature of heating

8、 medium W/(m ) Thermal conductivity Efficiency K Temperature drop V R V R5 5.1 . . , 6. . 5.2 1 , . , 1 . a) , RiKS F 2912:2008 5 b) , Rec) , RHC 1 . 1 , , , . 5.3 , . , 5.4 . 5.3.1 . HHiKq = (W/m2) (1) KH ： H ： . iRiVRVH=ln() (2) . iHiHqK =maxmax(W/m2) (3) 5.3.2 5.3.2.1 ReRiRHCKS F 2912:2008 6 . .

9、32max=F (4) , . . 5.3.2.2 . )(maxmaxiFCLiF k = () (5) kCL 5.4.3.2 . 5.3.2.3 1.1maxmax)(92.8iFiq = (W/m2) (6) 5.3.3 )1(maxmaxHCiiiHRRq += () (7) . 1/ 1.1 . 5.3.4 , Ri RHC 5.4 . 5.3.4 , . URRRReeie=+= (8) , . )1( =eiieRRqq (9) 5.4 5.4.1 Ri5.4.1.1 . =i jjodR(m2 /W) (10) KS F 2912:2008 7 5.4.1.2 . a) .

10、15.0,=iconR (m2 /W) (11) b) . 10.0,=iconR (m2 /W) (12) c) . 5.4.1.3 isiR1= (m2 /W) (13) 1.0)(92.8iFi = (m2 /W) (14) . , . 093.0=siR (m2 /W) (15) F . . 5.4.1.4 . siiconoiRRRR +=,(m2 /W) (16) 5.4.2 Re5.4.2.1 . =kkkudR(m2 /W) (17) . . seueRRR +=0,(m2 /W) (18) Rse： , Rse 0.17 . 5.4.2.2 1 , KS F 2912:200

11、8 8 . ieRUR =10,(m2 /W) (19) ISO 13370 . 5.4.2.3 Re , . eeeRRR 20, (m2 /W) (20) 2 2 . TbdRinse= (m2 /W) (21) d： b： T： . , . 5.4.3 5.4.3.1 , . . 2 . 2 . LWLLULfin LGSWLd b TKS F 2912:2008 9 WLL T(m) WLWLs (W/ ) . WL materialssurronding10 (W/m ) WLWLs 0.01(W/ ) . eiWLWLRRsl11+=(m) (22) sWL： (m) WL： (W

12、/m ) iR ： (m2/W) eR ： (m2/W) . finfinfink = ( ) (23) )tanh(lLLlkfinfinfin= (24) fin： ( ) fin ： , ( ) fink ： (fin efficiency) 22GUUWLfinLLTLLL= (m) (25) Lu ： (m) LG ： (m) . finfinfink =minmin( ) (26) )cosh(1minlLkfinfin= (27) 5.4.3.2 . finCLCLk = ( ) (28) KS F 2912:2008 10 kCL . TkLkLLkfinGfinfinUCLm

13、in01.02 += (29) 5.4.3.3 )11(111+=CLeiCLkRRR (m2 /W) (30) 5.4.3.4 , , . . )ln(21ioRRddR=(m2 /W) (31) do ： (m) di ： (m) R ： (W/m ) PEX X-L , R 0.35 W/m . 5.4.3.5 . a) U , b) , . aconRdR01.0,= (m2 /W) (32) 2 . 5.4.3.6 U U . U , . 1 . aUdR008.0= (m2 /W) (33) da： KS F 2912:2008 11 5.4.3.7 RHCCLUconRRHCRRTRTRTR +=2,(m2 /W) (34) 3 . RR,conRRURCLRsiRseRoRuRiconR,HCRiReR 3 6 6.1 5. . . . . 3 Ri, Re, RHC . , . , . a) . b) . . 6.2 6.2.1 1 m1 m . 3 ( 4 ). . KS F 2912:2008 12 . . 6.2.2 , , . . 100 mm , ( 5 ). 4 v R 1 m 1 m KS F 2912:2008 13 HCm iHCem 5 Rsi 0.05 0.2 m2 /W .