<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"><!-- P {margin-top:0;margin-bottom:0;} --></style>
</head>
<body dir="ltr">
<div id="divtagdefaultwrapper" style="color: rgb(0, 0, 0); font-family: Calibri,Arial,Helvetica,sans-serif; font-size: 12pt; background-color: rgb(255, 255, 255);">
<p><span style="color: black;">Dear Trnsys users,</span></p>
<p><span style="color: black;"></span> </p>
<p><span style="color: black;">I am using type 56 to model an air conditioning system for a three-story building.
</span><span lang="EN" style="color: black;">In my program, each floor has an air handling unit and the external air relative humidity ratio</span><span style="color: black;">,</span><span lang="EN" style="color: black;"> mass flow rate, and temperature are
obtained as ventilation inputs to building model from Type 607</span><span style="color: black;">, which is connected to cooling coils (type 508).<span>
</span>The temperatures of thermal zones of 1st floor are within acceptable range, whereas temperatures of thermal zones of 2nd and 3rd floor are going infinitely high. How can I solve this problem?</span></p>
<p><span style="color: black;"></span> </p>
<span style="color: black;">
<p><span style="color: black;">In addition, I encountered problems with chiller and ducts.
</span><span lang="EN" style="color: black;">The warning messages are written below:</span></p>
<p class="MsoNormal" style="background: white; margin: 0in 0in 0pt; line-height: normal;">
<span lang="EN" style="color: black;"></span> </p>
<p class="MsoNormal" style="background: white; margin: 0in 0in 0pt; line-height: normal;">
<span style="color: black;">1) The file\Trnsys 17\Tess Models\SampleCatalogData\AirCooledChiller\Samp_C.dat was called with a first independent variable value below the range supplied in the data file. Data is interpolated within the data file range but is
not extrapolated beyond<span> </span>the range. Performance of the equipment modeled by this unit may be incorrect.</span></p>
<p class="MsoNormal" style="background: white; margin: 0in 0in 0pt; line-height: normal;">
<span lang="EN" style="color: black;">2) The referenced UNIT\ (Type 607)\ has called the PSYCHROMETRICS routine with a humidity ratio above the saturation humidity ratio for the given dry bulb temperature. The air was assumed saturated at the given dry bulb
temperature and the humidity ratio set for this condition.</span><span style="color: black;"></span></p>
<p><font face="Times New Roman"></font></p>
<p class="MsoNormal" style="background: white; margin: 0in 0in 10pt; line-height: normal;">
<span style="color: black;">For the chiller, parameter of rated capacity was changed and other parameters remained as default values.</span></p>
<p class="MsoNormal" style="background: white; margin: 0in 0in 10pt; line-height: normal;">
<span style="color: black;"></span><span lang="EN" style="color: black;">Thanks in advance for your help.</span></p>
<p class="MsoNormal" style="background: white; margin: 0in 0in 10pt; line-height: normal;">
<span lang="EN" style="color: black;">B</span><span lang="EN" style="color: black;">est regards,</span><span style="color: black; font-size: 14pt;"></span></p>
<p><font face="Times New Roman"></font><span lang="EN" style="color: black; line-height: 115%; font-family: "Calibri","sans-serif"; font-size: 11pt;">Zhuo Li</span></p>
</span>
<p><span style="color: black;"></span> </p>
<p><font face="Times New Roman"></font></p>
</div>
</body>
</html>