First time here? Check out the
Help
page!
Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Hi there! Please sign in
help
tags
users
badges
ALL
UNANSWERED
Ask Your Question
RSS
Sort by »
date
activity ▼
answers
votes
13064
questions
Tagged
35
views
no
answers
no
votes
2025-06-30 04:18:07 -0500
Twose10
Unexpected Negative Conduction during Hot Outdoor Temperatures [closed]
conduction
heat-gain
energyplus
heat-balance
building-envelope
92
views
no
answers
1
vote
2025-06-29 11:55:26 -0500
jaksaaa555
Openstudio Skechup plugin
openstudio
openstudio-sketchup-plugin
surface-matching
geometry
boundary-condition
59
views
no
answers
no
votes
2025-06-29 11:53:18 -0500
jaksaaa555
I need help, started using this programme [closed]
openstudio
openstudio-sketchup-plugin
surface-matching
geometry
boundary-condition
89
views
1
answer
1
vote
2025-06-29 09:13:32 -0500
shorowit
How can I apply custom Openstudio measures in Resstock?
resstock
buildstockbatch
apply-measure
281
views
1
answer
1
vote
2025-06-28 14:58:56 -0500
Denis Bourgeois
Why does increasing air gap in double glazing increase cooling energy in my DesignBuilder model?
designbuilder
fenestration
construction
heat-transfer
cooling-load
130
views
1
answer
2
votes
2025-06-28 13:48:14 -0500
nemo
"Bad allocation" error in EnergyPlus 25.1 with hydronic radiant floor + air-to-water heat pump
energyplus
radiant-heating
air-to-water-heat-pump
sizing-error
low-temperature-radiant
130
views
1
answer
no
votes
2025-06-28 07:58:04 -0500
Ski90Moo
How to model an innovative indirect evaporative cooling system in energyplus?
evaporative-cooling
energyplus
openstudio
hvac-control
59
views
no
answers
no
votes
2025-06-27 05:08:29 -0500
Yunasm
Request for Application Version Notification Process (Cyber Essentials Requirement)
openstudio
openstudio-application
version
40
views
no
answers
no
votes
2025-06-27 05:08:28 -0500
Yunasm
Request for Application Version Notification Process (Cyber Essentials Requirement) [closed]
openstudio
openstudio-application
version
43
views
no
answers
no
votes
2025-06-27 05:08:28 -0500
Yunasm
Request for Application Version Notification Process (Cyber Essentials Requirement) [closed]
openstudio
openstudio-application
version
99
views
no
answers
no
votes
2025-06-26 12:46:54 -0500
mariaheloisa070@gmail.com
I'm having trouble modeling in OpenStudio. The windows are not being recognized. The doors appear correctly, but the windows are not showing up or being detected by OpenStudio. Has anyone experienced this issue or knows how to fix it?
windows
openstudio
geometry
sketchup
openstudio-sketchup-plugin
74
views
no
answers
1
vote
2025-06-26 10:50:50 -0500
Aaron Boranian
Invalid unitary system control zone: air loop unitary HP air to air
designbuilder
unitary-system
low-temperature-radiant
error
hvac
51
views
no
answers
no
votes
2025-06-26 02:28:46 -0500
Ohanbali
Invalid unitary system control zone: air loop unitary HP air to air [closed]
designbuilder
unitary-system
low-temperature-radiant
error
hvac
34
views
no
answers
no
votes
2025-06-25 14:52:31 -0500
xaelzephyr
tolerance not being inputted [closed]
pyfmi
xtol
tol
energyplus
open-modelica
50
views
no
answers
no
votes
2025-06-25 14:52:03 -0500
xaelzephyr
pyfmi cosim can't change tolerance
pyfmi
xtol
tol
energyplus
open-modelica
156
views
2
answers
no
votes
2025-06-25 12:32:50 -0500
josepsolebonet@telefonica.net
Energy Managment System
ems
energyplus
ems-control
severe-error
sensor
137
views
1
answer
no
votes
2025-06-25 06:42:05 -0500
josepsolebonet@telefonica.net
Envelope and Internal Load Breakdown measure
reporting-measure
openstudio
ip-units
si-units
101
views
no
answers
1
vote
2025-06-25 06:00:07 -0500
DamonHD
Adding internal partitions reduces heatflow to outside: why?
energyplus
construction
heat-transfer
zones
423
views
1
answer
2
votes
2025-06-24 09:08:53 -0500
DamonHD
Unexpected design-day heat flows vs U-values in simple building
u-value
energyplus
construction
heat-transfer
heating-load
88
views
no
answers
no
votes
2025-06-24 03:32:57 -0500
Anurag_G
Accounting for Mechanically Ventilated Fan Performance in DesignBuilder Using Fan Curves
designbuilder
exterior-equipment
fans
mechanical-ventilation
performance-data
166
views
1
answer
1
vote
2025-06-24 01:21:18 -0500
Olivia_casta
How to Collect Electrical and Environmental Parameters from an OpenStudio Model for an AHU Unit?
openstudio
ahu
output-variable
output-meter
openstudio-application
479
views
2
answers
1
vote
2025-06-23 22:56:55 -0500
LIANG Peijun
OpenStudio: DOASVRF design and warning of not enclosed zones
openstudio
doas
vrf
warning
hvac-control
479
views
1
answer
1
vote
2025-06-23 14:46:51 -0500
Jim Dirkes
Performance Based Curves integration into Design Builder
designbuilder
performance-curve
performance-data
energyplus
932
views
2
answers
4
votes
2025-06-23 04:07:06 -0500
Keigo
Chiller performance curve adjustment for ASHRAE90.1 Baseline case
energyplus
chiller
performance-data
ashrae-90.1
70
views
no
answers
no
votes
2025-06-22 13:27:25 -0500
ajith
How to efficiently model stacked windows (clerestory + main window) in DesignBuilder — building-level insertion?
designbuilder
clerestory
light
light-shelf
energyplus
166
views
1
answer
1
vote
2025-06-21 06:28:06 -0500
ecem
lower limit of my schedules (OpenStudio Application)
schedules
openstudio-application
167
views
1
answer
1
vote
2025-06-21 06:01:53 -0500
abd slam
ground to air heat exchanger ventilation
heat-exchanger
openstudio
ventilation
openstudio-application
earth-tube
182
views
1
answer
2
votes
2025-06-20 09:53:28 -0500
pmck
Trouble using VRF components from the BCL in OpenStudio app v1.9
vrf
openstudio
openstudio-application
bcl
component
1k
views
1
answer
8
votes
2025-06-20 09:02:33 -0500
ericmartinpe
ASHRAE/IECC Baseline VAV Fan Curves and Min Flow Fraction
fan
ashrae-90.1
iecc
leed
appendix-g
218
views
2
answers
2
votes
2025-06-19 14:49:11 -0500
ericmartinpe
Local Energy Flexibility Market Capabilities in EnergyPlus
demand-response
energyplus
photovoltaic
« previous
1
...
3
4
5
6
7
...
436
next page »
Training Workshops
Contributors
Tags
energyplus
×12
openstudio
×12
openstudio-application
×7
designbuilder
×6
construction
×3
geometry
×3
heat-transfer
×3
low-temperature-radiant
×3
openstudio-sketchup-plugin
×3
performance-data
×3
version
×3
ashrae-90.1
×2
boundary-condition
×2
error
×2
hvac
×2
hvac-control
×2
open-modelica
×2
pyfmi
×2
surface-matching
×2
tol
×2
unitary-system
×2
vrf
×2
xtol
×2
ahu
×1
air-to-water-heat-pump
×1
appendix-g
×1
apply-measure
×1
bcl
×1
building-envelope
×1
buildstockbatch
×1
chiller
×1
clerestory
×1
component
×1
conduction
×1
cooling-load
×1
demand-response
×1
doas
×1
earth-tube
×1
ems
×1
ems-control
×1
evaporative-cooling
×1
exterior-equipment
×1
fan
×1
fans
×1
fenestration
×1
heat-balance
×1
heat-exchanger
×1
heat-gain
×1
heating-load
×1
iecc
×1
Site design and logo: Copyright © 2015 Big Ladder Software LLC. All rights reserved.
The
Unmet Hours
and
Big Ladder
names and logos are trademarks of Big Ladder Software LLC.
User contributions licensed under the
Creative Commons Attribution Share Alike 3.0 License
.
Powered by
Please note: Unmet Hours requires javascript to work properly, please enable javascript in your browser,
here is how
dummy
×