TBT 1734-1986 内燃机车散热器性能试验方法

TBTB/T17348619861224198707011.1.1.1.2.1.2.1.1.2.2.1.55min1.2.3.1.3.1.3.1.1.3.2.Qkpapw2.2.1.2.2.2.2.1.2.2.2.2.3.3.3.1.3.1.1.0.01mm3.1.2.0.953.1.3.3.2.13.2.1.0.020.13.2.2.0.13.3.3.3.1.12mm100150mm3.3.2.3.3.13.3.3.0.4U3.3.4.4.4.1.Ta1ta1K4.2.Ta2ta2K4.3.Vam3h4.4.hstPa4.5.paPa4.6.Tw1tw1K4.7.Tw2tw2K4.8.Vwm3h4.9.pwPa4.10.BPa5.5.1.25.2.Wwtw1ta1ua4.14.10355.3.uaWwtw1ta15.25.25.4.5.5.KQpapwK=f(ua)Qw=f(ua)Pa=f(ua)pw=f(Ww)5.6.5.25.55.7.tw10.2ta155.8.QwQa5%6.6.1.()6.3×=ξ6.2.221+⋅⋅⋅++=nhhhhdnddddhPahd1hd2hdnPadnhhdhhdhhdndd′′=′′=′′=ξξξ,,2211hd1hd2hdnPa6.3.Va3dahfVρε23600⋅⋅=Vam3hhdPakgm3fm26.4.()11273astastRThBtRhB+=++=ρ,kgm3BPasthPa1aTK1atRR=287.1J(kg.K6.5.T()()12211221lnawawawawtttttttttT−−−−−=∆ε()()12211221lnawawawawtTTTTTTTT−−−−−=εTKTw1tw1KTw2tw2KTa1ta1KTa2ta2Kt6.6.47.____________F=_______m2fa=_______m2121ta12ta23taKta=ta2-ta14tam()2121aaamttt+=5hstPa6kgm3=(B+hst)(273+ta1)7paPa8CpakJ(kgK)9hdPa10Vam3hdhfV⋅⋅⋅=ρε23600011Uakg(m2.s)3600/⋅⋅=aaafvuρ12QakWapaaaatCfUQ∆⋅⋅⋅=13tw114tw215twKtw=tw1-tw216twm()2121wwmtttw+=17CpwkJ(kgK)18wkgm319Vwm3h20WwmSWw=Vwfw360021QwkWQw=VwpwCpwtw360022()[]100/×−=WaWQQQδ23TK24KW(m2.K)K=[QwFT]100025=[(tw1-tw2)(tw1-ta1)]10026pwPa27285t=________B=________Pa__________fa=______m2fw=_______m2f=________m2123456789101112)]1006A()BPaFm2fam2fwm2Ta1ta1KTa2ta2KhstPaPaPaCpaKJ(kgK)pakgm3hdPaVam3huakg/m2.sQakWTw1tw1KTw2tw2KCpwKJ(kgK)wk9m3Vwm3hWwmsQwKw%TKKw/m2.KpwPaRJ(kgk)7B()1bar=105Pa1mbar=10.2kgfm21kgf=9.81N1Nm2=1Pa1mmH20=1kgfm2=110-4kgfcm2=9.80665Pa9.81Pa1kW.h=3.6106J1J=2.77778107kW.h1kcal=4186.8J1W=1JS1kcalkg.K=4.1868kJ/kg.K1kcal(m2.h.)=1.163Wm2.k)1kgf.m=9.81J8