<HTML><BODY><br>Dear users,<br><br>Could you please advise how to calculate heat demand of the building, using type 56 and TrnSYS simulation studio. <br><br>I use the example of the building project in TRNSYS 16. <br>I followed the guide 06 for Multizone building and as result I have all zones temperatures shown on the graphs. <br>I tried to add a new equation to perform calculation of the heat demand, however it doesn't work (and no graphs). <br><br>I have the second scheme for thermal solar system (water and space heating). I was planning to use results of the building project (heat demand) in order to find out how many percent can be covered by solar system. <br><br>I've attached my schemes. By running the simulation you can see that some graphs are not shown, and I don't understand why. If you have any comments, please let me know. <br><br><br>Thank you in advance,<br>I will be appreciated for any help.<br>Malike<br><br><br></BODY></HTML>