# Thread: How to calculate cost for a gal of chilled water

1. New Guest
Join Date
Oct 2010
Posts
1
Post Likes

## How to calculate cost for a gal of chilled water

Does anyone know how to calculate the cost for a gal of chilled water?

2. Well I'm thinkin' that would depend on what chiller you're using??? Different machines will have a different kw per ton rating. If you knew the kw per ton and the size of the chiller, you should be able to do a bunch of reverse math and get a guesstimit of the cost per gallon.

3. Professional Member
Join Date
Mar 2003
Posts
7,381
Post Likes
actually, you need to figure all power including pumps and cooling tower, then do the math. lets say a total central plant might be 1.3 kw/ton these days, and you are using 2.2 gpm/ton. you can now get to the math. unless you really want a good number, then you need to figure costs for winter work, repairs, and depreciation, as well as operations.

4. Originally Posted by flange
actually, you need to figure all power including pumps and cooling tower, then do the math. lets say a total central plant might be 1.3 kw/ton these days, and you are using 2.2 gpm/ton. you can now get to the math. unless you really want a good number, then you need to figure costs for winter work, repairs, and depreciation, as well as operations.
Good point Flange, I wasn't even thinking about the ancillary equipment for some reason, brain fart!

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•

## Related Forums

The place where Electrical professionals meet.