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2024-01-30 07:32:12 -0500 commented answer Reporting occupancy schedules (energyplus)

This worked, but it obviously reports the average number of people in a zone for an hour. While that is usable too, ther

2024-01-30 07:32:11 -0500 marked best answer Reporting occupancy schedules (energyplus)

Hi all,

I have a bit of a weird question. Is there any way to make Energyplus report per zone, per hour whether or not there are people present in that zone? Essentially reporting the presence of people as described in de occupancy schedule in the .idf. I can't seem to find an appropriate solution anywhere. I'm looking for some kind of report variable that puts these results in the .eso or in a .csv or something.

Curious if anyone else has run into this problem as well. Thanks for your answers! Best Gijs

2024-01-30 07:30:28 -0500 marked best answer Modelling balanced ventilation with heat recovery [EnergyPlus]

Hi!

I am looking to model a balanced ventilation system with heat recovery, but without linking it to a heating or cooling system. The ventilation system should simply consist of a supply fan, extraction fan and a heat exchanger in between the supply and return ducts to create the heat recovery system (i.e. the heat from the return air is used to pre-heat the supply air).

Looking at the HVAC in the documentation, it seems that all ventilation systems must either be linked to a heating or cooling system, or have no heat recovery at all.

Thanks in advance for your answers!

2024-01-30 07:30:11 -0500 received badge  Supporter (source)
2024-01-29 09:21:54 -0500 asked a question Reporting occupancy schedules (energyplus)

Reporting occupancy schedules (energyplus) Hi all, I have a bit of a weird question. Is there any way to make Energyplu

2023-12-11 09:26:19 -0500 received badge  Student (source)
2023-12-11 09:18:09 -0500 commented answer Modelling balanced ventilation with heat recovery [EnergyPlus]

I hadn't noticed the EnergyRecoveryVentilator before, I might give that a try and see if it yields very different result

2023-12-11 09:18:04 -0500 answered a question Modelling balanced ventilation with heat recovery [EnergyPlus]

Update 11-12-23: I think I managed to make this work using an AirLoop system. I sized it on ventilation requirement and

2023-12-11 09:17:54 -0500 commented answer Modelling a ground-source heat pump with underfloor heating and cooling [EnergyPlus]

Thank you for the answer! I managed to make this work with indeed two separate heat pumps and also two ground heat exc

2023-12-11 02:15:39 -0500 marked best answer Modelling a ground-source heat pump with underfloor heating and cooling [EnergyPlus]

Hi!

I am trying to model a heating and cooling systems that uses a ground-source loop and then a water-to-water heatpump to be used in an underfloor heating and cooling system (the same tubes are used, just in a different mode). This has probably been done, but I can't seem to find the appropriate water-to-water heatpump.

I am looking at combining ZoneHVAC:LowTempRadiant:VariableFlow with a WaterHeater:HeatPump:EIR:(Heating/Cooling), but I don't see how I would use the same system for both heating and cooling? I am pretty new to modelling my own systems with custom nodes, pipes and so on, so forgive me the basic question.

Thanks in advance for your answers!

Update 11-12-23: Solution found (see Keigo's answer below and the final version in EP v9.2 language on Dropbox here: https://www.dropbox.com/scl/fi/fe4n3o...)

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2023-12-05 07:38:13 -0500 edited question Modelling a ground-source heat pump with underfloor heating and cooling [EnergyPlus]

Modelling a ground-source heat pump with underfloor heating and cooling Hi! I am trying to model a heating and cooling

2023-12-05 07:38:08 -0500 commented question Modelling balanced ventilation with heat recovery [EnergyPlus]

@AaronBoranian There is outdoor air mixed into the system, in fact all supply air is outdoor air. Only it is preheated u

2023-12-05 07:38:02 -0500 edited question Modelling balanced ventilation with heat recovery [EnergyPlus]

Modelling balanced ventilation with heat recovery Hi! I am looking to model a balanced ventilation system with heat rec

2023-12-05 05:58:30 -0500 received badge  Organizer (source)
2023-12-04 11:39:59 -0500 asked a question Modelling balanced ventilation with heat recovery [EnergyPlus]

Modelling balanced ventilation with heat recovery Hi! I am looking to model a balanced ventilation system with heat rec

2023-12-04 11:39:56 -0500 asked a question Modelling a ground-source heat pump with underfloor heating and cooling [EnergyPlus]

Modelling a ground-source heat pump with underfloor heating and cooling Hi! I am trying to model a heating and cooling