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<DIV><FONT face=Arial size=2>Hello,</FONT></DIV>
<DIV><FONT face=Arial size=2>I found some problems with the type92 in Trnsys16. I checked the program *.for</FONT></DIV>
<DIV><FONT face=Arial size=2>One problem is located here :</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> PERFORM INITIAL TIMESTEP MANIPULATIONS</FONT></DIV>
<DIV><FONT face=Arial size=2>...</FONT></DIV>
<DIV><FONT face=Arial size=2>!check the parameters for problems and RETURN if any are found</FONT></DIV>
<DIV><FONT face=Arial size=2>...</FONT></DIV>
<DIV><FONT face=Arial size=2>IF((HTREFF.LT.0.).OR.(HTREFF.LT.1.)) CALL TYPECK(-4,INFO,0,4,0)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Well, the second comparison in the parentheses of IF is wrong, it should be H(TREFF.<STRONG>GT</STRONG>.1). </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The other problems are located below the ligne of nomber 20. For the calcul of QAUX and QLOSS. Firstly, let's look at them:</FONT></DIV>
<DIV><FONT face=Arial size=2>QAUX = (FLOW*CP*(TIN-TOUT)+UA*(TBAR-TAMB))/HTREFF, </FONT></DIV>
<DIV><FONT face=Arial size=2>QLOSS = UA*(TBAR-TAMB) + (1.d0-HTREFF)*QAUX</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Generaly, the environmental temperature is higher than the average temperature of a chilled fluide, so TBAR-TAMB is less than 0, so for a electrical compressed chiller, it should take more chaleur. There is an impression that the ambiante give the chaleur to the fluide. Finally, the two fomulas shoud be like this: </FONT></DIV>
<DIV><FONT face=Arial size=2>QAUX = (FLOW*CP*(TIN-TOUT)+UA*(TAMB-TBAR))/HTREFF</FONT></DIV>
<DIV><FONT face=Arial size=2>QLOSS = (1.d0-HTREFF)*QAUX</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>That's all. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Aleck (France)</FONT></DIV></DIV></div><br>
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