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<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN style="mso-tab-count: 2">Dear
Trnsys users,</SPAN></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN style="mso-tab-count: 2"><FONT
face=Arial size=2></FONT></SPAN></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN style="mso-tab-count: 2">we
have to create a solar cooling control system based on the following
strategy:</SPAN></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN style="mso-tab-count: 2"><FONT
face=Arial size=2></FONT></SPAN></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN style="mso-tab-count: 2"><FONT
face=Arial size=2></FONT></SPAN></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN>If ((mode = 0)and (mode_status = 1)) then<?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>If (T_supply_air < (T_set_supply_air - dT_dec))
then<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode =
-1<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode_status =
0<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>Endif<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>If (T_supply_air > (T_set_supply_air + dT_dec))
then<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode =
1<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode_status =
0<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>Endif<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN>endif<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 1">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 1">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN>If ((mode = -1) and (mode_status = 1)) then<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>If
(T_supply_air < (T_set_supply_air - dT_dec))
then<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode =
-2<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode_status =
0<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>Endif<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>IF<SPAN style="mso-spacerun: yes"> </SPAN>(T_supply_air >
(T_set_supply_air + dT_dec)) then<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode =
0<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode_status =
0<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>Endif<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN>endif<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN>If ((mode = 1) and (mode_status = 1)) then <o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 2">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>If
(T_supply_air < (T_set_supply_air - dT_dec))
then<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode =
0<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mode_status =
0<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#ff0000><SPAN
style="mso-tab-count: 3">
</SPAN>Endif</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT
color=#ff0000></FONT></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT
color=#ff0000></FONT></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT
color=#ff0000>
<EM>... (continue)
....</EM></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT
color=#ff0000><EM></EM></FONT></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT
color=#ff0000> </FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT color=#000000>Is it possible
to implement the whole strategy into the Equation tool or is it
necessary to use other types? Specifically, is it possible to introduce into the
equation tool the <EM>"if... then..."</EM> function?</FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">In addition, does exist a manual for
the equation tool?</SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN> </P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN> </P></DIV>
<DIV><FONT face=Arial
size=2>---------------------------------------------------------------</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><EM>Eng. Maurizio Sorce</EM></FONT></DIV>
<DIV><FONT face=Arial size=2><EM></EM></FONT> </DIV>
<DIV><FONT face=Arial size=2><EM>DREAM Department of Energy and Environmental
Research<BR>University of Palermo</EM></FONT></DIV>
<DIV><FONT face=Arial size=2><EM></EM></FONT> </DIV>
<DIV><FONT face=Arial size=2><EM>Viale delle Scienze, Building 9<BR>I-90128
Palermo, Italy (EU)</EM></FONT></DIV>
<DIV><FONT face=Arial size=2><EM></EM></FONT> </DIV>
<DIV><A href="mailto:mauriziosorce@dream.unipa.it"><FONT face=Arial
size=2><EM>mauriziosorce@dream.unipa.it</EM></FONT></A><BR><A
href="http://www.dream.unipa.it"><FONT face=Arial
size=2><EM>www.dream.unipa.it</EM></FONT></A></DIV>
<DIV><FONT face=Arial size=2><EM></EM></FONT> </DIV>
<DIV><FONT face=Arial size=2><EM>Phone: (+39) 091 236012<BR>Mobile phone: (+39)
3495386296<BR>Fax: (+39) 091484425</EM></FONT></DIV></BODY></HTML>