Hello Juan Francisco, Thank you for your answer. I didn’t choose the internal calculation but the userdefined. Unfortunately, the value that I entered is not the same as the output value. There is few differences but there are here. And the HCONVI is different for a same wall type but with different orientation. Yasmina EL HASNAOUI Tel : +33 (0) 426 10 66 94 De : trnsys-users-bounces@cae.wisc.edu [mailto:trnsys-users-bounces@cae.wisc.edu] De la part de JUAN FRANCISCO BELMONTE TOLEDO Hello Yasmina. I think it can be interesting in case you choose the “internal calculation” option in TRNBUILD for the heat transfer coefficient, and you want to know its value. Otherwise the output value must be the same that you entered as an input value. Juan Francisco Belmonte Toledo Dpto. de Mecánica Aplicada e Ing. de Proyectos Universidad de Castilla-La Mancha --------------------------------------------------------------------------------- Escuela de Ingenieros Industriales Campus Universitario s/n, 02071, Albacete --------------------------------------------------------------------------------- Instituto de Investigación en Energías Renovables Sección de Eficiencia Energética y Sistemas Térmicos (ENERSYS) C/ de la Investigación, s/n, 02071, Albacete --------------------------------------------------------------------------------- De: trnsys-users-bounces@cae.wisc.edu [mailto:trnsys-users-bounces@cae.wisc.edu] En nombre de yasmina.el-hasnaoui@cofelyaxima-gdfsuez.com Dear Mika, Thank you for you quick answer. On the TRNSYS manual (chapter 5 –MultizoneBuilding page 5-34) , it’s written that the HCONVI unit is [kJ/hm2K]. I am not sure it’s a heat transfer rate from the selected surface. Yasmina EL HASNAOUI Tel : +33 (0) 426 10 66 94 De : trnsys-users-bounces@cae.wisc.edu [mailto:trnsys-users-bounces@cae.wisc.edu] De la part de ?? ?? Dear Yasumina, I think HCONVI is not a heat transfer coefficient [kJ/hm2K] but a heat transfer rate [kJ/h] from the selected surfce. Best regards, Mika ================== Mika Yoshinaga Associate Prof. Meijo University, Japan ================== 2014/1/24 <yasmina.el-hasnaoui@cofelyaxima-gdfsuez.com> Dear TRNSYS users, Does anybody know what is the difference between the front convective Heat Transfer Coefficient that you enter in type 56 and the type 56’s output called NType 108 : HCONVI ( eff.inside cinv. Heat transfer coeff (FRONT) ) ? Kind regards, Yasmina EL HASNAOUI Tel : +33 (0) 426 10 66 94
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