Sebastien Brideau's profile - activity

Outputs in energyplus are real/actual temperatures. The calculations for radiant transfer considers emissivity of surfac

EnergyPlus HSPF Calculation - Rated Supply Air Fan Power Per Volume Flow Rate Hi, in EnergyPlus, you can get a calculat

Hi,

I'm trying to get a house model done in E+. I need to model a heat pump (it can just be generic, but has to be something somewhat realistic). I'm using the AirLoopHVAC:UnitaryHeatPump:AirToAir:MultiSpeed object. It's for Quebec city, so region number 5 for HSPF calculation purposes.

I'm really struggling with the HSPF output. It is calculating a really low value not matter what I do. I started with the E+ database data, then I increased the rated COP of the heating coil to something impossible (like 7) and the best HSPF2 V I can get, is around 6.

I then changed the curves to data I had for a real heat pump, and I still get about the same.

I really don't know what to do. I've been trying for days to fix this but I have no idea what I'm doing wrong.

I should be able to get much higher values than 6.

Any help?

ok - I think I figured something out. In Coil:Heating:DX:MultiSpeed, there is a field "Minimum Outdoor Dry-Bulb Temper

hspf calculations energyplus Hi, I'm trying to get a house model done in E+. I need to model a heat pump (it can just b

Hi,

I'm trying to setup an idf file with a Coil:Heating:DX:Multispeed object. I've read the engineering manual and the input-output manual and I still can't figure this out.

What is the waste heat fraction? I set this to 0.0 and I get an error:

* Severe * <root>[Coil:Heating:DX:MultiSpeed][Heat Pump DX Heating Coil][speed_1_rated_waste_heat_fraction_of_power_input] - "0.000000" - Expected number greater than 0.000000

I don't know why I need to have a waste heat component in the heating component of a heat pump.

Could someone help me understand what this value does?

Thanks

Hi Keigo, What confused me was that I assumed that since I used electrical as a fuel, I thought the waste heat fraction

Coil:Heating:DX:MultiSpeed - rated waste heat fraction of power input Hi, I'm trying to setup an idf file with a Coil:H

how to add parallel components in the AirLoopHVAC:OutdoorAirSystem:EquipmentList Hi, I'm new to E+. I'd like to add BIPV