[Equest-users] how to model steam absorption chiller in eQUEST

[Brian Fountain]

A steam meter would represent a district heating system where in your
building you do not have boilers, just incoming steam (or hot water) from
another source.  It essentially replaces a boiler without the part load
curve or input fuel.  If you have boilers in your building and no district
heating then the steam meter is unnecessary.

 

 

 

From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On
Behalf Of Aaron
Sent: Tuesday, May 13, 2014 4:59 AM
To: John Aulbach
Cc: equest-users
Subject: Re: [Equest-users] how to model steam absorption chiller in eQUEST

 

Hi John

Thanks for you swift and useful help.

One more question,  steam meter is not neccessary to add to the steam loop,
is it?

 Thank you

 

                   Aaron Zhou

 

 

------------------ Original ------------------

From:  "John Aulbach";<jra_sac at yahoo.com>;

Date:  Mon, May 12, 2014 11:46 AM

To:  "Aaron"<565520032 at qq.com>;
"equest-users"<equest-users at lists.onebuilding.org>; 

Subject:  Re: [Equest-users] how to model steam absorption chiller in eQUEST

 

Aaron:

 

Size the pump for the btus the chiller will require in hot water load, then
set the pump kW to Zero. Pump will still work ,just not use any energy. You
will need a steam boiler connected to the chiller, with probably a 100%
efficiency. In that way, you are essentially firing the chiller with steam.

 

John R. Aulbach, PE

 

From: Aaron <565520032 at qq.com>
To: equest-users <equest-users at lists.onebuilding.org> 
Sent: Sunday, May 11, 2014 8:33 PM
Subject: [Equest-users] how to model steam absorption chiller in eQUEST

 

Hi guys

     I'm modelling a steam absorption chiller, but seems not easy. I've set
the chiller as below.  I set heating source as Hot water loop, because seems
steam is not available for absorption chiller.

    

 

I set steam meter for steam source, 



 

but error appears after running the model saying absorption chiller must
have a pump for absorption steam loop as below.



please, could anyone give some guide on this problem for me?

 

thanks

 

                             Aaron

 

 

 

 

 


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