<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.3354" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I implemented a start up calculation based on a formula
given by Fraisse and Virgone (Applied Energy, 62, 1999). they calculate the
maximum achievabe temperature rise in steady state and added the effects of
dynamics to estimate the temperature that will be achieved in reality. Comparing
this to what is to be reached at a given moment, they deciede to either turn on
the heating or redo the calculation the next timestep.</FONT></DIV>
<DIV><FONT face=Arial>This max temperature is calculated based on the
external temperature plus the ratio of the maximal available power divided by a
loss coefficient in Watts per K.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Within ESP-r, The (BB3-BB2*Q)/BB1 equation can be used to
calculate the next timestep temperature when injecting a heat flux
Q.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I wondered whether the maximum achievable temperature at
for example 4 timesteps from now could be calculated based on this BB,BB2, BB3
equation using 4*Q instead of Q</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Could anyone help me out on this one?</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Thanks!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>Leen Peeters<BR>University of Leuven<BR>Postbox:
02421 <BR>APPLIED MECHANICS AND ENERGY CONVERSION<BR>office number
02.050<BR>Celestijnenlaan 300A<BR>3001 Heverlee</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Belgium<BR>Phone
+32-16-322.518</FONT></DIV><BR>
<BR>
<FONT FACE="Arial" SIZE=2>Disclaimer: <A HREF<BR>
<BR>
</BODY></HTML>