Cold trains in heated tunnel
Posted: Fri Sep 05, 2014 12:17 pm
Hi all,
I'd like to simulate a heated underground tunnel with incoming trains. The trains will have a given surface temperature, depending on the outdoor temperature. While being parked in the tunnel they'll act as a cooling load, and I need to design the heaters to match this. Also this needs to be done as a dynamic year simulation, since I'm also interested in how long it takes to heat the surrounding rock. This could be up to a few months, depending on the capacity of the heaters.
Now, to simplify let's work with the principle that we have one train, coming in every day of the year at 1:00 am. It will be parked in the tunnel for 5 hours, and then depart.
What would the best practice be to simulate this?
Can I use components somehow?
Or should I simply create a chilled ceiling in ApacheHVAC with the corresponding mass of a train? -- I'm not sure how to make this act the way I want it to though.
Thanks in advance for any helpful tips.
I'd like to simulate a heated underground tunnel with incoming trains. The trains will have a given surface temperature, depending on the outdoor temperature. While being parked in the tunnel they'll act as a cooling load, and I need to design the heaters to match this. Also this needs to be done as a dynamic year simulation, since I'm also interested in how long it takes to heat the surrounding rock. This could be up to a few months, depending on the capacity of the heaters.
Now, to simplify let's work with the principle that we have one train, coming in every day of the year at 1:00 am. It will be parked in the tunnel for 5 hours, and then depart.
What would the best practice be to simulate this?
Can I use components somehow?
Or should I simply create a chilled ceiling in ApacheHVAC with the corresponding mass of a train? -- I'm not sure how to make this act the way I want it to though.
Thanks in advance for any helpful tips.