Question-and-Answer Resource for the Building Energy Modeling Community
| 2016-07-29 08:20:26 -0500 | commented question | Lighting energy consumption of 15th floor is higher than 14th floor. It is not specific to my project. Another example: 10 X10 X3m apartment unit. 5 story building midrise apartment. No neighbor buildings. Climate: Istanbul. All construction default. 1 thermal zone and 5 daylight controls. Lighting simulation results; 4th floor: 2389 kwh & 5th floor 2472.47 kwh. Energy consumtion of 5th floor is considerable higher than 4th floor, which is impossible :( |
| 2016-07-29 08:19:06 -0500 | commented question | Lighting energy consumption of 15th floor is higher than 14th floor. Building footprint is a 20x20 meter square (each apartment unit is 10x10x3 meter). The geometry is a rectangular prism, so each repeats vertically. There is not any blind on windows. I have been working on this problem for 2 weeks. I remodeled my building several times, the result did not changed. |
| 2016-07-28 07:11:02 -0500 | commented question | Lighting energy consumption of 15th floor is higher than 14th floor. Is there a way to send pictures via email? |
| 2016-07-28 02:41:44 -0500 | commented question | Lighting energy consumption of 15th floor is higher than 14th floor. Hi David, I am using OpenStudio-1.11.0.4313b0e0d9-Win64. Radiance Parameters : Coarse, the default one. I modeled in Sketchup 2016. Lighting Control Type: Continuous. I copied and paste the first floor for 15 times vertically. So, the lighting inputs and geometry/floor area are the same on each floor. |
| 2016-07-27 13:39:49 -0500 | received badge | ● Student (source) |
| 2016-07-27 12:05:38 -0500 | asked a question | Lighting energy consumption of 15th floor is higher than 14th floor. I am modeling a 15-story residential building. Each story has 4 apartment units. I have two problems. Problem : Lighting energy consumption of 15th floor is higher than 14th floor. Case A (See images): I modeled 4 thermal zones (each include 15 vertical apartment units). The result of lighting energy consumption of different floors: 1-Floor: 9895, 2-Floor: 9890, 7-Floor: 9560, 14-Floor: 9502, and 15-floor: 10068 kWh. There is big jump between 14th and 15th floor. Lighting energy consumption must decrease, not increase. After adding a 16th floor, I re-simulated the 15th floor, then the result dropped 9392 kWh. How it is possible that the lighting energy consumption of 15th floor is higher than 14th floor? How can I fix this problem? Case B In order to solve this problem, I considered each apartment unit as a single zone and I created 60 zones in total. And re-simulated. Average ligthing floor consumption is 11819, Which is higher than all above. How it is possible? |
