<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB">Dear TRNsys-user,</span></p>
<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB"> </span></p>
<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB">I want to simulate natural night free-cooling with TRNflow.</span></p>
<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB">In TRNflow I have a large opening that I open the night and close the day.</span></p>
<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB">This large opening corresponds to a window in TRNbuil.</span></p>
<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB">My question is : How can I simulate a window in TRNbuild who are a window the day and a space (open; no glazing) the night?</span></p>

<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB"> </span></p>
<p class="MsoNormal" style="MARGIN: 0pt"><span lang="EN-GB" style="mso-ansi-language: EN-GB">Best regards</span></p>