Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page
Ask Your Question
4

Manipulating Heat Source characteristics

asked 2016-09-14 15:08:08 -0500

joekers gravatar image

updated 2016-10-18 14:39:36 -0500

I'm developing a measure allows the user to set characteristics of the heaters in the DHW system loop. I'm allowing them to set the fuel type, efficiency of heater, Tank type (instantaneous or tank), r-value of tank, and if it's in a conditioned or unconditioned area. I'm now trying to set the loss coefficient based on these parameters. I will need the surface area of the tank but am unsure of how to obtain this. Any ideas? Also how will the r-value of the tank affect the loss coefficients?

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
1

answered 2016-09-16 09:28:04 -0500

Adam Hilton gravatar image

updated 2016-09-16 09:28:38 -0500

If you're using WaterHeater:Mixed there is no surface area of the tank as it doesn't have a defined shape, just a volume. If you're using WaterHeater:Stratified then Tank Height and Volume are input parameters and you can calculate a surface area from that. I'm not entirely sure what use you have for it though since the loss-coefficients are independent of surface area.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

 

Question Tools

Stats

Asked: 2016-09-14 15:08:08 -0500

Seen: 157 times

Last updated: Sep 16 '16