<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px"><div id="yui_3_16_0_1_1432709861102_2418">Dear All,</div><div id="yui_3_16_0_1_1432709861102_2532"><br></div><div id="yui_3_16_0_1_1432709861102_2563">I worked on a couple of projects in equest using the VRF performance curves from Daikin and LG. The methodology i followed is as below:</div><div id="yui_3_16_0_1_1432709861102_2596"><br></div><div id="yui_3_16_0_1_1432709861102_2597">1) Modelled packaged VAV with minimum flow ratio 1. <br></div><div id="yui_3_16_0_1_1432709861102_2628">2) Created systems based on number of ODU's and assigned multiple zones to the respective ODU. (Just like modelling a AHU)<br></div><div id="yui_3_16_0_1_1432709861102_2793">3) Inputted the ODU Cooling capacity and supply flow</div><div id="yui_3_16_0_1_1432709861102_2629">4) Fans will be constant volume.</div><div id="yui_3_16_0_1_1432709861102_2630">5) Since it is a cooling only system, i assigned only the "Cool EIR - fEWB-OAT", "Cool-EIR-fPLR" and "Cool cap-fEWB&OAT" curves. Rest were all default DX unit curves.</div><div id="yui_3_16_0_1_1432709861102_2736"><br></div><div dir="ltr" id="yui_3_16_0_1_1432709861102_2856"> PVAV system is used as PSZ system cannot handle multiple zones well thus causing unmet hours.</div><div id="yui_3_16_0_1_1432709861102_2858" dir="ltr"><br></div><div id="yui_3_16_0_1_1432709861102_2735">I did 2 trials, one with default DX curves and the other with performance curves from LG and Daikin. The results showed a decrease in cooling energy consumption by more than 30% thus impacting the overall energy consumption by more than 10%. <br></div><div id="yui_3_16_0_1_1432709861102_2748"><br></div><div dir="ltr" id="yui_3_16_0_1_1432709861102_2829">Is the simulation methodology and results appropriate? I feel the savings is on a higher side.</div><div id="yui_3_16_0_1_1432709861102_2871" dir="ltr"><br></div><div id="yui_3_16_0_1_1432709861102_2872" dir="ltr">Please advise.<br></div><div id="yui_3_16_0_1_1432709861102_2830"><br></div><div id="yui_3_16_0_1_1432709861102_2853" dir="ltr">Regards,</div><div id="yui_3_16_0_1_1432709861102_2854" dir="ltr">Rathnashree<br></div></div></body></html>