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Heat Load
2

Heat Load

Heat Load

(OP)
I am looking to estimate the heat load that is ~50K ft2, with an 15 ft ceiling.  I was told the building is poorly insulated.  They want to keep the building around 20 deg C in the winter.  Can I use building footprint and height to estimate this?

The building in located in the northern canadian climate (it's cold seven months a year).

I do not know what other information might be helpful.  I really only need a rough number at this time.  

RE: Heat Load

The question is so subjective since you don't know insulation values, etc.  I want to see how others weigh in on this.  You are probably in the range of 45-50 BTUH/sqft, but take that with a grain of salt.  That does not include any ventilation air being brought into the building.  

  

RE: Heat Load

For a single story masonery exposed all walls my cristal ball says about 5 btu/cuft at 30*F osa or for your building 3,750,000 btu/hr. Of course if the OSA temperature goes down then the heat loss would increase

RE: Heat Load

(OP)
I am really only trying to find a ball park figure right now.  If it goes any further we'd contact a consultant but we are just trying to get a feel of how much additional heat load would be used.

Both Bronyraur and imok have given values less than 5mmbtu/hr.  I will use 5mmbtu/hr as a conservative assumption, unless anyone feels as thought that would be too low.

RE: Heat Load

I can't see how you could go wrong with 5,000,000 btuh, unless you are bringing in an excessive amount of outside ventilation air.

RE: Heat Load

If you can get energy use and hourly temperature data for a reasonable period of time (a month would do) you could back-calculate the overall insulation value.

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