willyJohan's profile - activity

Removing fan energy from rated COP This has been covered in a few posts here before, but I'm not sure the prototype appr

I'd recommend tracking down the various pertinent heat transfer formulas (Evap, rad., conv,, cond., and make up water) a

I'd recommend tracking down the various pertinent heat transfer formulas (Evap, rad., conv,, cond., and make up water) a

While i cant speak to the specifics of how the "swimming pool:indoor object" works, I would not recommend this approach

@mdahlhausen (tagging you as i see your ID associated with the file), it looks like the openstudio-standards file Protot

@mdahlhausen (tagging you as i see your ID associated with the file), it looks like the openstudio-standards file Protot

@mdahlhausen (tagging you as i see your ID associated with the file), it looks like the openstudio-standards file Protot

Removing fan energy from rated COP This has been covered in a few posts here before, but I'm not sure the prototype appr

Removing fan energy from rated COP This has been covered in a few posts here before, but I'm not sure the prototype appr

I’m sure some one can give a better answer regarding eppy, but if you’re in a pinch I’d search for the idd file in the e

Sorry, poor attempt at humour. I do appreciate the response.

Of all the various performance curve inputs for the EnergyPlus AirConditioner:VariableRefrigerantFlow object, which can one expect to have the most impact on overall energy use?

I am trying to develop a generic set of VRF object inputs that will be representative of current VRF equipment and I'd like to prioritize any curve development effort based on impact (i.e., if i only have time to develop a few novel curves based on published equipment performance data, which should i start with?).

As a reminder here are the different curve inputs (ignoring heating vs cooling):

• Capacity Ratio Boundary Curve Name
• Capacity Ratio Modifier Function of High Temperature Curve Name
• Capacity Ratio Modifier Function of Low Temperature Curve Name
• Combination Ratio Correction Factor Curve Name
• Defrost Energy Input Ratio Modifier Function of Temperature Curve Name
• Energy Input Ratio Boundary Curve Name
• Energy Input Ratio Modifier Function of High Part-Load Ratio Curve Name
• Energy Input Ratio Modifier Function of High Temperature Curve Name
• Energy Input Ratio Modifier Function of Low Part-Load Ratio Curve Name
• Energy Input Ratio Modifier Function of Low Temperature Curve Name
• Heat Recovery Capacity Modifier Curve Name
• Heat Recovery Energy Modifier Curve Name
• Part-Load Fraction Correlation Curve Name
• Piping Correction Factor for Length in Mode Curve Name

For bonus points, what of the non-performance curve inputs would one prioritize?

Thanks in advance.

Thanks for the detailed answer. Happy to edit my question if you’d like me to remove the list of curves. And you are cor

Thanks for the suggestion. Un/fortunately, I'm not modeling any specific piece of equipment, rather, I'm attempting to q

Most impactful VRF object inputs Of all the various performance curve inputs for the EnergyPlus AirConditioner:VariableR

Thanks for the suggestion. That said, I'm not modeling any specific piece of equipment, rather, I'm attempting to quanti

VRF Performance Curve Sets and Sources I'm trying to pull together every available set of VRF performance curves and any

for your second question, yes, design conditions vary by region. Have a look at the the csv files found in the directory

not 100 % sure on this without looking a the actual model and i'm not familiar with OS measures, but the EnergyManagemen

NSRDB vs ERA5 for TMY Solar Data It appears that the TMYx 2004-2018 weather files use the NSRDB for solar irradiance val

Are you referring to equipment such as: https://www.multistack.com/products/modular-solutions_air-cooled/ara-air-to-wate

A calibration question. Would appreciate folks' thoughts on how best to use modelling to estimate savings when little is

Calibration quesion Would appreciate folks' thoughts on how best to use modelling to estimate savings when little is kno

Calibration quesion Would appreciate folks' thoughts on how best to use modelling to estimate savings when little is kno

Does ComStock have characteristic distribution TSV files similar to those from ResStock available to the public?

I've read that some of "the data sets that ComStock uses are proprietary or access-controlled," but I'd assume that once these have been aggregated and converted to probability distributions this would not longer be a concern.

Are ComStock building characteristic distributions available to the public? Does ComStock have characteristic distributi

I also find it useful to use a text editor with book marking capabilities (e.g. textpad) to copy only the lines I'm inte

In General, apartment level should be fine, in fact, groups of apartments subject to the same interior and exterior cond

an oldie but a goodie: https://unmethours.com/question/359/what-are-your-techniques-for-reducing-unmet-hours/

I've decided to just go with EnerpoolPro which allows the user to report all the hourly outputs necessary for any sort o

I'm hoping to model the impact different levels of insulation would have on heat loss from an in-ground pool.

I'm thinking this is basically just a basement with water instead of air and plan to model it as such.

I'm wondering if there is a way to account for the difference between air and water when modelling convective heat transfer as i assume this will be the major issue with this model.

Also curious to hear folks' general thoughts on how best to model heat transfer from an in-ground pool.

Thanks in advance.

I've decided to just go with EnerpoolPro which allows the user to report all the hourly outputs necessary for any sort o

Calculating total energy gain/loss due to ventilation air I am trying to find out how much of a building's heating or co

Thanks Jim. I am specifically looking a the impact of insulation, so the relative impact overall is less important to me

Modelling heat loss from an outdoor heated pool using tools/inputs intended for basements I'm hoping to model the impact