Re: [TRNSYS-users] Hot air flow mixer

[David BRADLEY <d.bradley@tess-inc.com>]

Mazen,
  I am not entirely clear on whether you are controlling the total amount of flow going through the solar collector or whether you are trying to compute the fraction of the collector's known outlet flow that you need to mix into your exhaust gas stream in order to achieve a desired mixed temperature. If you are trying to control the outlet temperature of the collector, there are collector models available that will internally compute the flow rate required to achieve a desired temperature. If you have to known air streams that come together to achieve an outlet temperature, use Type33 on each air stream to get the air stream enthalpies then use some equations to back-calculate the quantity of air that you need from each stream in order to get the desired temperature. Don't forget about the latent effects when mixing!!
Best,
 David


On 4/18/2012 06:47, Mazen Darwish wrote:

Dear users

 

I want to model a flow mixer where hot air from a solar reciever will be mixed with exhaust flue gases from the gas turbine

before entering a HRSG , i have tried using a tee piece for mixxing the flows but the outlet temperature of the mixture is below

 the needed temperature which  is the gas exhaust temperature , can i use another component to keep the temperature steady while controlling the flow rate.

 

Thanks

 

Mazen Darwish

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