<div dir="ltr">These curves are same for all HP units how is it possible<div><br></div><div>Regards</div><div>Sambhav</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jul 17, 2014 at 4:45 AM, Julien Marrec <span dir="ltr"><<a href="mailto:julien.marrec@gmail.com" target="_blank">julien.marrec@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Hi,<br><br></div>I've been trying to model a Daikin VRV system and trying to figure out why I was getting 100 times more space heating in the proposed (VRV) model compared to the baseline model (PTHP). After isolating the problem to the VRV, I found a conversation from March 2014 between a few folks (Byron Burns and Bill Bishop mostly - thank you both!), that basically explained why I was getting the issue: the .inp data from Daikin isn't importing correctly.<br>
<br></div>I just wanted to say that we're in July now, and this still hasn't been fixed (I downloaded the curve from Daikin a few days ago), so if you're having the problem, the fix proposed by Byron and Bill still works. It consists in to replacing the VRV Heating Curve with:<br>
<br>"VRV Heating EIR-F-EWB/ODB AC" = CURVE-FIT <br> TYPE = BI-QUADRATIC-T<br> INPUT-TYPE = COEFFICIENTS<br> COEFFICIENTS = ( -1.85025, 0.0620141, -0.000312822, 0.07145853, <br>
-0.0003626328, -0.0007776424 )<br>
..<br><br></div>(at least that's how I understood it and it seems to be working).<br><div><br></div><div>I've attached the performance curves with repaired Heating EIR for VRV.<br></div><div><br>I'll email Daikin to let them know (again), maybe others will want to do the same so that they realize this is a problem encountered by more than one individual<br>
<br><br></div><div>Have a great day,<br>Julien<br><div><div><div><div><div dir="ltr"><div>--<br>Julien Marrec, EBCP, BPI MFBA<br>Energy&Sustainability Engineer<br>T: +33 6 95 14 42 13<br><span style="color:rgb(0,0,0)"><br>
</span></div>LinkedIn (en) : <span style="color:rgb(0,0,0)"><a href="http://www.linkedin.com/in/julienmarrec" target="_blank">www.linkedin.com/in/julienmarrec</a></span></div></div>
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