Thermal Comfort Calculation

[stephanie.egger]

I'm interested in how thermal comfort results are calculated, specifically PMV and PPD. Are they based on Fanger's equations directly, or a modification thereof? I'd like to know if there are any assumptions being made. I know you can control metabolic rate, but what about clo?

Thanks,

Stephanie

[stephanie.egger]

I'm interested in how thermal comfort results are calculated, specifically PMV and PPD. Are they based on Fanger's equations directly, or a modification thereof? I'd like to know if there are any assumptions being made. I know you can control metabolic rate, but what about clo?

Thanks,

Stephanie

[ryan.arnaudin]

Hi Stephanie, apologies for the late reply, but I just came across this thread while searching for something else.

Does this help: Thermal Comfort?

Edit: updated link.

[ryan.arnaudin]

Hi Stephanie, apologies for the late reply, but I just came across this thread while searching for something else.

Does this help: Thermal Comfort?

Edit: updated link.

[stephanie.egger]

Thanks for the reply Ryan. At the time I needed clarification for my research. I've since moved on, but am still interested in the answer to my original question. 

The link you sent does a great job at describing the parameters of thermal comfort, but I was interested in the parameters Simulation CFD considers for thermal comfort. For example, is there an assumed clo value in the PMV and PPD calcuations SimCFD uses? 

[stephanie.egger]

Thanks for the reply Ryan. At the time I needed clarification for my research. I've since moved on, but am still interested in the answer to my original question. 

The link you sent does a great job at describing the parameters of thermal comfort, but I was interested in the parameters Simulation CFD considers for thermal comfort. For example, is there an assumed clo value in the PMV and PPD calcuations SimCFD uses? 

[apolo_vanderberg · Accepted solution]

This is in the link that Ryan supplied (specifically here)

But when you enable Thermal comfort you must specify some values.

Metabolid rate

Clothing

Humidity

We do have default values placed in there however it is adjustable based on the assumptions you're trying to match

[apolo_vanderberg · Accepted solution]

This is in the link that Ryan supplied (specifically here)

But when you enable Thermal comfort you must specify some values.

Metabolid rate

Clothing

Humidity

We do have default values placed in there however it is adjustable based on the assumptions you're trying to match

[Anonymous]

Hi!

I have tried to solve some problems related to thermal comfort. One thing wasn't fully clear to me that thermal comfort factors are adjustable but if I have more then two occupant in my Scenario with different metabolic rate or clothing,how can i setup my conditions then? Does thermal comfort factors like metabolics rates have any features to assign to model's in scenario?

Thank you!

[Anonymous]

Hi!

I have tried to solve some problems related to thermal comfort. One thing wasn't fully clear to me that thermal comfort factors are adjustable but if I have more then two occupant in my Scenario with different metabolic rate or clothing,how can i setup my conditions then? Does thermal comfort factors like metabolics rates have any features to assign to model's in scenario?

Thank you!

[Anonymous]

Thanks for your reply.

But would you tell me how to specify Thermal comfort factors ( e.g. Metabolid rate, clothing, humidity) ? Where can find this setting?

Thank you!

[Anonymous]

Thanks for your reply.

But would you tell me how to specify Thermal comfort factors ( e.g. Metabolid rate, clothing, humidity) ? Where can find this setting?

Thank you!

[Anonymous]

@Anonymous wrote:

Thanks for your reply.

But would you tell me how to specify Thermal comfort factors ( e.g. Metabolid rate, clothing, humidity) ? Where can find this setting?

Thank you!

---

I have the same question..
Is anyone out there able to give just a simple direct answer to this question?

[Anonymous]

@Anonymous wrote:

Thanks for your reply.

But would you tell me how to specify Thermal comfort factors ( e.g. Metabolid rate, clothing, humidity) ? Where can find this setting?

Thank you!

---

I have the same question..
Is anyone out there able to give just a simple direct answer to this question?

[apolo_vanderberg]

To the other posts in this thread. 

Assigning those parameters is a function of modifying the values in the Results Quantities dialog. When you enable Thermal Comfort there is a dialog where you can set the values. This is also outlined in the Help 

For the question about multiple occupants with differing values. 

You would need to do that as separate scenarios

Run Scenario 1 with Comfort values based on Occupant 1

Run Scenario 2 with Comfort values based on Occupant 2

[apolo_vanderberg]

To the other posts in this thread. 

Assigning those parameters is a function of modifying the values in the Results Quantities dialog. When you enable Thermal Comfort there is a dialog where you can set the values. This is also outlined in the Help 

For the question about multiple occupants with differing values. 

You would need to do that as separate scenarios

Run Scenario 1 with Comfort values based on Occupant 1

Run Scenario 2 with Comfort values based on Occupant 2

[Anonymous]

Thank you!

[Anonymous]

Thank you!

[Anonymous]

Is PMV based on Fanger's equations directly, or a modification thereof?

Thanks

[Anonymous]

Is PMV based on Fanger's equations directly, or a modification thereof?

Thanks