Dear Nguan Teck, That sounds like a good approach. Make sure you remember that the NTYPE Output, QCOOL is a power in units kJ/hr. Also, for system sizing, make sure you maintain a constant temperature in your zone(s). The reason for this is if you have an instantaneous temperature step in TRNBUILD, it requires more instantaneous energy or power to bring the air temperature to setpoint. To clarify, please see the attached *.jpg that I made for a client. Best regards, Matt Duffy ----- Original Message ----- From: "#TEO NGUAN TECK#" <z050128@ntu.edu.sg> Sent: Thu, December 18, 2008 2:35 Subject:[TRNSYS-users] Cooling Load Calculations Hi ALL, I would like to use TRNSYS to calculate the cooling load of my building model (altogether 8 zones), instead of traditional methods. I have carried out the following steps and would like to know if I am correct: 1) I used the cooling available in TRNBuild and set the Room Temperature Control to 25 deg C (unlimited power). 2) I retrieved the data (QCOOL) and determine the max QCool required for each zone (by sorting the data using excel). 3) I subsequently summed all the maximum QCool from the 8 zones. The final value (ie from step 3) will be used to determine the cooling capacity of my equipment (which is a chilled water cooling system). Are my steps correct? Or can anyone provide me a better approach? Any help is deeply appreciated! Nguan Teck Undergrad Nanyang Technological University, Singapore _______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users ----- End of original message -----
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