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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I believe a dedicated VRF module was released this year for energyplus. I have not used it though and cannot comment further.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Kevin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Smith, Michael [mailto:michael.smith@wspfk.com] <br><b>Sent:</b> Thursday, July 21, 2011 10:19 AM<br><b>To:</b> Vinay Devanathan; bldg-sim@lists.onebuilding.org; EnergyPlus_Support@yahoogroups.com<br><b>Subject:</b> Re: [Bldg-sim] Simulating VRV/VRF systems<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D'>Vinay<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D'>Simulating the VRV/VRF as a WSHP is effectively what the PVVT approach is modeling; it uses a heat pump as the heating source and can be set to water cooled. The PVVT allows for more complexity and control in how the water source heat pump operates. (i.e. variable speed compressor) See the attached presentation put together by Dana Troy and Mark Denyer, it’s quite helpful in their explanation. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#333399'>Michael J. Smith, EIT, LEED</span></b><sup><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#333399'>® </span></sup><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#333399'>AP</span></b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#333399'>WSP</span></b><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#0069FB'> </span></b><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#333399'>▪</span></b><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#0069FB'> </span></b><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>FLACK + KURTZ</span></b><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#66737D'>512 Seventh Avenue, New York, NY 10018</span></b><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#66737D'>Direct: 212.951.2671 | Main: 212.532.9600</span></b><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#66737D'><a href="http://www.wspfk.com/" title="http://www.wspfk.com/">www.wspfk.com</a></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Vinay Devanathan<br><b>Sent:</b> Wednesday, July 20, 2011 6:12 PM<br><b>To:</b> bldg-sim@lists.onebuilding.org; EnergyPlus_Support@yahoogroups.com<br><b>Subject:</b> [Bldg-sim] Simulating VRV/VRF systems<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Hello All,</span><o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>I have come across the PVVT modeling approach as a workaround for simulating VRV/VRF Systems in eQuest.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>I was wondering why the workaround of using Water-source Heat Pumps to mimic a VRV/VRF system has not been proposed as yet. <o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Any explanation/reasoning would be much appreciated.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Thank you.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Vinay<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>