<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style></style></head><body lang=JA link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1>Hello Achim, <o:p></o:p><o:p> </o:p>Thank you for the mail.<o:p></o:p>I can control humidity and get latent load output when using “ideal control” by enabling humidity control.<o:p></o:p>In this “ideal control” with humidity control enabled, the humidity control stops working if I change the target temperature from dBT to zone resultant temperature.<o:p></o:p>At the moment, the only way I can get humidity control and latent load output is “ideal control” using dBT as the target temperature.<o:p></o:p><o:p> </o:p>As I have wrote in my previous mail, I can make a “plant” which affects the humidity as intended.<o:p></o:p>The main problem is that the latent load is always “0”.<o:p></o:p>At the moment, the only way that I can get the latent load is by outputting the plant’s “input” and “output” specific humidity, mass flow rate and using a spreadsheet to calculate the latent load.<o:p></o:p>The result of the calculation gives me confidence that the simulation itself is behaving as it should. The psychometric chart output (of the result analysis) also shows the expected result. <o:p></o:p>The only problem is that the latent load is “0”.<o:p></o:p><o:p> </o:p>I have attached a link to the simple model that I made. <o:p></o:p>https://www.dropbox.com/sh/683iczt7iacbsei/AAAlmwjYb8_OEEKE2AO5NqNma?dl=0<o:p></o:p><o:p> </o:p>Best Regards,<o:p></o:p>Hiroi Nishimatsu<o:p></o:p><o:p> </o:p><o:p> </o:p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0mm 0mm 0mm'>From: esp-r-bounces@lists.strath.ac.uk <esp-r-bounces@lists.strath.ac.uk> On Behalf Of achim.geissler Sent: Thursday, February 18, 2021 4:24 AM To: ESP-r List <esp-r@lists.strath.ac.uk> Subject: [esp-r] Re: Unable to get Dehumidification Energy<o:p></o:p></div></div><o:p> </o:p>Hi there,<o:p></o:p><div><o:p> </o:p></div><div>it’s been a while, but did you activate humidity in your zone control? I seem to remember that one had to “activate” humidity in some way and I think it was in the control.<o:p></o:p></div><div><o:p> </o:p></div><div>FWIW.<o:p></o:p></div><div><o:p> </o:p></div><div>Best<o:p></o:p></div><div>Achim<o:p></o:p><div> <o:p></o:p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div>On 15 Feb 2021, at 08:19, <<a href="mailto:hiroi@mocha.ocn.ne.jp">hiroi@mocha.ocn.ne.jp</a>> <<a href="mailto:hiroi@mocha.ocn.ne.jp">hiroi@mocha.ocn.ne.jp</a>> wrote:<o:p></o:p></div><o:p> </o:p><div>Hello esp-r community,<o:p></o:p> <o:p></o:p>I am unable to get dehumidification energy values when cooling a room with simple cooler represented by a plant network:<o:p></o:p>Zone -> Duct_in -> Cooling Coil -> Fan -> Duct_out<o:p></o:p> <o:p></o:p>I built 3 identical (geometry, surface attribution) zones, all with a simple cooler as described above.<o:p></o:p>The only difference is the cooling coil inlet water temperature being 5, 10, 15 degC.<o:p></o:p>Control was set to keep the zone dBT at 27 degc for all zone by controlling the air movement volume through the cooling coil.<o:p></o:p>This was done to understand the dehumidification capability of a typical cooler and the resulting zone RH.<o:p></o:p>The simulation result confirmed that the lower temperature cooling coil setup reduces the zone RH, compared to higher temperature cooling coil setup.<o:p></o:p>Unfortunately, the dehumidification energy as outputted from the “energy delivered” summary (enquire about -> energy delivered in the Result analyser) shows “0” for all zones.<o:p></o:p>This also the case for the output of the time plot graph.<o:p></o:p> <o:p></o:p>ESP-r is V13.3.11 but this is also the case with V13.2.6.<o:p></o:p> <o:p></o:p>Is there anyone who can help me out?<o:p></o:p> <o:p></o:p>Best Regards,<o:p></o:p>Hiroi Nishimatsu<o:p></o:p>Mail: <a href="mailto:hiroi@mocha.ocn.ne.jp">hiroi@mocha.ocn.ne.jp</a><o:p></o:p> <o:p></o:p> <o:p></o:p> <o:p></o:p>_______________________________________________ esp-r mailing list <a href="mailto:esp-r@lists.strath.ac.uk">esp-r@lists.strath.ac.uk</a> <a href="http://lists.strath.ac.uk/mailman/listinfo/esp-r">http://lists.strath.ac.uk/mailman/listinfo/esp-r</a><o:p></o:p></div></blockquote></div><o:p> </o:p><div><div> <a href="mailto:achim.geissler@acatalepsy.ch">achim.geissler@acatalepsy.ch</a><o:p></o:p></div><div><o:p> </o:p></div><o:p> </o:p></div><o:p> </o:p></div></div></body></html>