[Rakshit]

Hi All,
It would be great if any one can give me some tips over defining the physics for my problem

I have a enclosed cavity with a chiller unit in it. The initial temperature inside the cavity is 25 degC and external temperature out side the cavity is also 25 degC
so with this condition I want to achieve a target temperature of 15 degC inside the cavity. Basically saying the chiller unit should suck the heat from inside the cavity and dissipate it to the out side (external environment )

so is it possible to define negative heatflux for the chiller unit ?? or is there any other way i can deal with this
for reference I have attached a rough picture of my set up
Many Thanks

[ghorrocks]

Yes, of course you can do that. You just define a negative heat source inside the cavity and positive heat source in the external environment.