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 »
relevance ▼
date
activity
answers
votes
3690
questions
Tagged
174
views
no
answers
no
votes
2019-12-21 08:13:52 -0500
anon4575
What themal zones to add to the Air Loop System?
air-loop
130
views
1
answer
1
vote
2024-01-22 05:29:26 -0500
Zakaria
Refrigeration Air Chiller System Evaporating Temperature, Constant or Variable - AirChiller
refrigeration-equipment
air-chiller
evaporation
energyplus
output-variable
248
views
2
answers
no
votes
2025-07-16 22:37:46 -0500
yiyuan-jia
Method of introducing outside air using "ideal load system"
ideal-loads-air-system
outdoor-air
mechanical-ventilation
energyplus
515
views
2
answers
2
votes
2023-03-29 07:58:30 -0500
Zakaria
Air-Chiller temperature setpoint
energyplus
air-chiller
setpoint
thermostat
refrigeration
179
views
no
answers
2
votes
2017-11-03 08:37:38 -0500
xzb86
Outdoor air load no return air
energyplus
outdoor-air
please-use-existing-tags
219
views
no
answers
1
vote
2019-02-11 22:09:25 -0500
shorowit
how and where to specify outdoor air in OS?
outdoor-air
air-handling-unit
openstudio
please-use-existing-tags
239
views
no
answers
2
votes
2019-03-14 08:03:11 -0500
jbatt
Are OA Controllers required for all air loops in OpenStudio/EnergyPlus?
air-loop
outdoor-air
radiant-cooling
223
views
no
answers
2
votes
2020-01-13 04:03:23 -0500
Francesco
Air system in Ideal Loads Air System Template
energyplus
ideal-loads-air-system
139
views
no
answers
2
votes
2019-07-19 03:22:01 -0500
FSilenzi
Air to air chiller with condenser working with return indoor air
openstudio
chiller
condenser-loop
return-air
89
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
851
views
1
answer
2
votes
2021-01-11 17:36:53 -0500
ProbingParticle
What's the correct way to model central air-to-water heat pump with backup electric boiler and hydronic baseboards?
equest
air-to-water-heat-pump
boiler
vav
66
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
129
views
no
answers
no
votes
2022-07-20 04:53:15 -0500
yoshiwara
Air distribution with separate zones for supply and return air
air-distribution
air-loop
energyplus
268
views
1
answer
3
votes
2017-11-16 20:55:27 -0500
TomB
How to model VAV system with no return air?
outdoor-air
return-air
exhaust-air
vav
288
views
no
answers
2
votes
2015-10-30 02:46:27 -0500
Pantamonium
Air Terminal:Dual Duct:VAV:Outdoor Air overrides maximum allowed branch flow
dual-duct
outdoor-air
design-air-flow-rate
energyplus
2k
views
1
answer
5
votes
2016-02-19 10:25:32 -0500
Julien Marrec
AHU Supply Air Temperature
openstudio
energyplus
air-handling-unit
supply-temperature
437
views
1
answer
2
votes
2019-12-11 10:38:30 -0500
shorowit
Ideal Load Air System
ideal-loads-air-system
432
views
1
answer
1
vote
2017-08-19 06:02:45 -0500
Liam
Does the supply air flow rate include the amount of air come in the room through natural/mechanical ventilation
energyplus
openstudio
ideal-loads-air-system
design-air-flow-rate
2k
views
no
answers
no
votes
2019-07-08 04:00:01 -0500
muin
how to calculate air flow, pressure and temperature of the air gap of a naturally ventilated double pane window using energyplus?
energyplus
air-flow
window
171
views
no
answers
1
vote
2023-04-26 14:03:40 -0500
Abarker
HeatPump:PlantLoop:EIR objects not operating with geo connection
water-to-water-heat-pump
geothermal
plant-loop
hvac-control
632
views
1
answer
1
vote
2023-05-23 00:11:04 -0500
matbla
Creating a MVHR system for residential application
designbuilder
air-distribution
hvac-control
air-loop
heat-recovery
745
views
2
answers
2
votes
2015-04-16 20:21:48 -0500
Geraldo Pithon
Is it possible to add multiple air loops to one thermal zone?
openstudio
air-loop
air-handling-unit
290
views
no
answers
1
vote
2017-11-07 20:10:15 -0500
Maryl J. Courtine
How can I get the right output report for reversible air-to-water heat pump?
energyplus
air-to-water-heat-pump
output-report
output-variable
air-source-heat-pump
220
views
1
answer
1
vote
2018-02-22 05:32:55 -0500
kabot
air flow temperature - natural vent. by convection
energyplus
air-flow
air-distribution
zone-temperature
242
views
no
answers
2
votes
2020-06-18 02:56:04 -0500
Aravinda27
Humidistat in Ideal loads air system - not working?
energyplus
ideal-loads-air-system
dehumidification
outdoor-air
10k
views
no
answers
1
vote
2020-10-31 13:10:49 -0500
tri.ton99
Buffering Air and Mixing Air In HVAC Systems OpenStudio
openstudio
economizer
air-mixing
478
views
1
answer
5
votes
2020-02-28 05:50:37 -0500
Petros Dalavouras
Dedicated Outside Air in Openstudio
doas
openstudio
air-handling-unit
vav
464
views
1
answer
1
vote
2023-04-11 15:12:51 -0500
Denis Bourgeois
Air boundary condition in energyplus
air-wall
energyplus
heat-transfer
506
views
1
answer
3
votes
2015-06-09 08:39:38 -0500
Annie Marston
Modelling air handling unit (AHU) without coils for mechanical ventilation only
energyplus
air-handling-unit
mechanical-ventilation
outdoor-air
286
views
1
answer
1
vote
2018-09-14 15:43:33 -0500
MJWitte
Zero "Zone Air Terminal Outdoor Air Volume Flow Rate" on design days
energyplus
design-day
design-air-flow-rate
« previous
1
...
11
12
13
14
15
...
123
next page »
Training Workshops
Contributors
Tags
energyplus
×16
outdoor-air
×8
openstudio
×7
air-handling-unit
×5
air-loop
×5
ideal-loads-air-system
×5
air-distribution
×3
design-air-flow-rate
×3
designbuilder
×3
vav
×3
air-chiller
×2
air-flow
×2
air-to-water-heat-pump
×2
error
×2
hvac
×2
hvac-control
×2
low-temperature-radiant
×2
mechanical-ventilation
×2
output-variable
×2
please-use-existing-tags
×2
return-air
×2
unitary-system
×2
air-mixing
×1
air-source-heat-pump
×1
air-wall
×1
boiler
×1
chiller
×1
condenser-loop
×1
dehumidification
×1
design-day
×1
doas
×1
dual-duct
×1
economizer
×1
equest
×1
evaporation
×1
exhaust-air
×1
geothermal
×1
heat-recovery
×1
heat-transfer
×1
output-report
×1
plant-loop
×1
radiant-cooling
×1
refrigeration
×1
refrigeration-equipment
×1
setpoint
×1
supply-temperature
×1
thermostat
×1
water-to-water-heat-pump
×1
window
×1
zone-temperature
×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
×