<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=gb2312"> <META content="MSHTML 6.00.2900.3020" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=4>Hi,</FONT></DIV> <DIV><FONT size=4></FONT> </DIV> <DIV><FONT size=4>I am trying to use ESP-r to simulate the performance of a room with vented trombe wall,and i creat the air flow network without external environment node seeing the figure attachment,but i doubt whether it works right.Could someone give me the answer,and if possible give me some advice how i should do for the simulation of trombe wall using ESP-r?</FONT></DIV> <DIV><FONT size=4></FONT> </DIV> <DIV><FONT size=4>Thank you for your time!<BR>Luo</FONT></DIV></BODY></HTML>