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I am using anys to create a heat exchanger containing parallel slabs. the heat exchanger is defined as a solid body i ne

We need the water to be cooled to 4 degrees from 50 degrees. In district cooling application

The climate is in Austria,Graz. And yes the building is over heating even though we have natural ventilation of 1ach in summer

the window are distributed uniformly on each side of the single family house 4 on each side

I am simulating a single family house with roof the losses are low i compared with calculated results with same u-values. external wall u-value 0.24 and total heating demand for 156m² is only 17kWh/m². what could be the mistake? your help is highly appreciated

Am modeling a building GSHP 2 floors with 5 zones each. attached is the outputUnbenannt.PNG

I get correct results in energyplus but no change in designbuilder output

Schedule:Constant,Cycle,OnOff,1;

AvailabilityManager:Scheduled, Packaged Rooftop Air Conditioner Availability Manager, Cycle;

EnergyManagementSystem:Sensor, AptTemp, BLOCK1:ZONE1, Zone Mean Air Temperature;

EnergyManagementSystem:Sensor, hSP, BLOCK1:ZONE1, Zone Thermostat Heating Setpoint Temperature;

EnergyManagementSystem:Actuator, AvailSCH_Overwrite, Cycle, Schedule:Constant, Schedule Value;

EnergyManagementSystem:ProgramCallingManager, Supervision, BeginTimestepBeforePredictor, HVAC_uncontolledloop_Supervision;

EnergyManagementSystem:Program, HVAC_uncontolledloop_Supervision, SET Toffset = 4, IF AptTemp > (hSP - 0.01), SET AvailSCH_Overwrite = 0, ELSEIF AvailSCH_Overwrite == 0 && AptTemp >= (hSP - Toffset), SET AvailSCH_Overwrite = 0, ELSE, SET AvailSCH_Overwrite = 1, ENDIF;set.PNG

When i choose internal source i can place the heating pipes after the first layer but i want the pipes embeded within the second layer. How?

But that only stops cooling and doesn't allow a range for heating so it will heat when ever the temp. is less than heating set point what if I want to maintain a room temp. of 22 to 25°C how to set the limit

Thank you very much your comment is right but am still getting errors any idea why?

Hi, Thanks for commenting I have no cooling system i just want to maintain a temp. of 22-26 inside the room. Your Help is Appreciated

constant.PNG

Did EMS work with you? if yes may you post the file here. Thank you.

hello Ivan, thank you for such detailed info I tried running the EMS file I have no errors but it's not effecting my simulation results. Any ideas why? Your help is much appreciated

I changed to simple HVAC data and it works now

The system strats at 0°C and continues heating until 20 not 26 the setback temperature is also 26 as i didn't include an occupancy schedule

Any luck? as am having the same issue

what if i don't have a cooling system and i just want heating to stop at 26°C but no cooling. Thank you for your time.

I get severe errors and its not simulating

BeginTimestepBeforePredictor, HVAC_uncontolledloop_Supervision; EnergyManagementSystem:Program, HVAC_uncontolledloop_Supervision, SET Toffset = 1.00, IF AptTemp > (hSP - 0.01) && AptTemp < (hSP + 0.01), SET AvailSCH_Overwrite = 0, ELSEIF AvailSCH_Overwrite == 0 && AptTemp >= (hSP - Toffset) && AptTemp <= (hSP + Toffset), SET AvailSCH_Overwrite = 0, ELSE, SET AvailSCH_Overwrite = 1, ENDIF;

if i try using the Ems file for my case Schedule:Constant,Cycle,OnOff,1; ! New schedule object

AvailabilityManager:Scheduled, ! Updated Availability Manager Packaged Rooftop Air Conditioner Availability Manager, Cycle; EnergyManagementSystem:Sensor, AptTemp, Thermal Zone 1, Zone Mean Air Temperature;

EnergyManagementSystem:Sensor, hSP, Thermal Zone 1, Zone Thermostat Heating Setpoint Temperature;

EnergyManagementSystem:Actuator, AvailSCH_Overwrite, Cycle, Schedule:Constant, Schedule Value; EnergyManagementSystem:ProgramCallingManager, Supervision,

Thank you for answering but is there a way to do it directly with designbuilder without exporting to energyplus.

I want my Zone to start at 22c and heat until the zone temperature is 26c then the sys switches off until the zone temperature is 22 and so on

I try weather data analysis but when i want to convert my edited csv file back to epw it says unknown source and the program terminates

Thank you that was very useful

am looking at the thermal mass and the position is important

I have tried at building level, zone level, and site level.

it sets the walls to exterior by default