<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:10pt"><div id="yiv9073490056" class="" style=""><div class="" style=""><div style="color:#000;background-color:#fff;font-family:verdana, helvetica, sans-serif;font-size:10pt;" class=""><div id="yiv9073490056" class="" style=""><div id="yiv9073490056yui_3_16_0_1_1408093370808_11245" class="" style=""><div style="background-color:rgb(255, 255, 255);" class="" id="yiv9073490056yui_3_16_0_1_1408093370808_11244"><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" class="" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;"><span id="yiv9073490056yui_3_16_0_6_1408026953904_15" class="" style="">Dear TRNSYS users,</span></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica,
sans-serif;font-size:13.600000381469727px;font-style:normal;background-color:transparent;" class=""><span id="yiv9073490056yui_3_16_0_6_1408026953904_21" class="" style=""><br style=""></span></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0,
0);font-family:verdana, helvetica, sans-serif;font-size:10pt;background-color:transparent;" class=""><span id="yiv9073490056yui_3_16_0_6_1408026953904_26" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:13.600000381469727px;font-style:normal;" class="">I am trying to control a cooling tower of absorption chiller by </span><span style="background-color:transparent;" class="" id="yiv9073490056yui_3_16_0_1_1408026953904_2997">using a three-way valve (type 11f) to mix between the returned water from the chiller and the water coming from the cooling tower (type 51b). </span></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:13.600000381469727px;font-style:normal;background-color:transparent;" class=""><span style="background-color:transparent;" class=""><br class="" style=""></span></div><div
id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:13.600000381469727px;font-style:normal;background-color:transparent;" class=""><span style="background-color:transparent;" class="" id="yiv9073490056yui_3_16_0_6_1408026953904_43">I assumed the range of temperature of mixing 28 - 33 C</span><span style="font-size:10pt;background-color:transparent;" id="yiv9073490056yui_3_16_0_1_1408026953904_3211" class=""> (over 33 C the flow completely will be through the cooling tower), and </span><span style="font-size:10pt;background-color:transparent;" id="yiv9073490056yui_3_16_0_1_1408093370808_12173" class="">I am using (W-</span><span style="font-size:10pt;background-color:transparent;" class=""><span id="yiv90734900567994e2fc-7847-4602-a716-5a20b00a7808" class="" style="">interpreter</span></span><span style="font-size:10pt;background-color:transparent;"
id="yiv9073490056yui_3_16_0_1_1408093370808_12174" class="">) to produce the mixer (diverter) signal.</span></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;font-style:normal;background-color:transparent;" class=""><br id="yiv9073490056yui_3_16_0_1_1408093370808_11484" class="" style=""></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;font-style:normal;background-color:transparent;" class="">I am getting strange results where <span style="font-size: 10pt;" class="">the inlet mass to the chiller (that comes from the cooling tower subsystem) </span><span style="font-size: 10pt; background-color: transparent;" class="">is not equal to </span><span style="font-size: 10pt;" class="">the inlet mass of the cooling tower subsystem (that comes from
the chiller), even these mass rates exceeded the rated flow rate of the pump of cooling tower subsystem (type 114). </span><span class="" style="font-size: 10pt; background-color: transparent;">Whereas </span><span class="" style="font-size: 10pt; background-color: transparent;">if the diverter signal is fixed (from 0 to 1.0) I do not face this error</span></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;font-style:normal;background-color:transparent;" class=""><br class="" style=""></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;font-style:normal;background-color:transparent;" class="">Did anyone try controlling a cooling tower in TRNSYS?</div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="background-color:transparent;" class=""><br
class="" style=""></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="background-color:transparent;" class="">All kinds of help are very much appreciated.<br id="yiv9073490056yui_3_16_0_1_1408093370808_11717" class="" style=""></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;font-style:normal;background-color:transparent;" class=""><br class="" style=""></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:13.600000381469727px;font-style:normal;background-color:transparent;" class=""><span id="yiv9073490056yui_3_16_0_6_1408026953904_36" class="" style="">Kind regards,</span></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_4" style="color:rgb(0, 0, 0);font-family:verdana, helvetica,
sans-serif;font-size:13.600000381469727px;font-style:normal;background-color:transparent;" class=""><span class="" style="" id="yiv9073490056yui_3_16_0_6_1408093370808_64">Shahen</span></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_6" class="" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;"></div><div id="yiv9073490056yui_3_16_0_6_1408026953904_8" class="" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;"> </div><div id="yiv9073490056yui_3_16_0_6_1408026953904_10" class="" style="color:rgb(0, 0, 0);font-family:verdana, helvetica, sans-serif;font-size:10pt;"><i id="yiv9073490056yui_3_16_0_1_1408026953904_2885" class="" style=""><font size="3" id="yiv9073490056yui_3_16_0_1_1408026953904_2884" class="" style=""><div id="yiv9073490056yui_3_16_0_1_1408026953904_2883" class="" style=""><br class="" style=""></div></font></i><font size="3" class=""
style=""></font></div></div></div></div></div></div></div></div></body></html>