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Re: [EnergyPlus_Support] Purchased heating and cooling examples?



Dear James,

Thank you very much (: This clarifies the situation pretty good.

My was confusion came from the fact that in my country there are no purchased cooling providers, at least no such that I know of, and I was wondering about the explanation in 2. in a sense that you don't purchase it, it just comes from outside, so now it all makes sense.

Best regards,
Martin

On Thu, Feb 17, 2011 at 3:09 PM, James V Dirkes II, PE <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
 

Dear Martin,

 

?Purchased? can be a couple of different, similar ideas:

1.       Some cities sell steam, hot water or chilled water to customers in their locale.  It is produced in a central plant and then distributed to the buildings nearby.  These customers thus purchase heating, cooling or both.

2.       Some large commercial, industrial or institutional campuses use a central power plant to provide heating and cooling for the buildings on the campus.  Although the individual buildings do not ?purchase? the service, it is not generated within the building. In addition the part load efficiencies are not the same as the individual buildings (since they correspond to the entire campus part loads) and so you do not want to assign a specific boiler or chiller to the E+ Plant.

Hope that helps!

 

The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653

 

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Martin Gogov
Sent: Thursday, February 17, 2011 7:04 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Purchased heating and cooling examples?

 

 

Hi,

 

I'm not an HVAC engineer though I have a good understanding of E+ but I cannot understand what is 
"purchased" heating and cooling. I cannot find anything in Google and I'm fairly confused from the E+ docs about this specific issue. Could you give me a short explanation and a few examples? In my country I have a theory what could be called "purchased heating" but totally no idea what could be called "purchased cooling" (:

 

Thank you,

Martin




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