likesrocks
Mining
- Apr 7, 2008
- 3
Hi, this is my first post here. Looks like there are some great users on here.
I'm looking at options for cooling water from 120 to 80F in a desert climate. As such, there must be basically zero (or minimal) water use. So far, I'm only seeing air cooled chillers as an option. What I am after is basic design data, like kWh/ton-hr cooling so that I can calculate rough operating costs. Unfortunately, I have only found some design rules of thumb of around 0.28-0.3 kW/ton for chillers that I'm assuming are for HVAC use and cool water to ~50F. I read lots about increased condenser temps reducing the energy requirement, so I'm also assuming that my application will be more efficient than the above ROT...? I'm hoping someone here can point me in the right direction. I'm also interested in approximate order of magnitude capital cost differences relative to cooling tower. I'm looking at a very large cooling requirement, approximately 40,000 tons of cooling, so economy of scale is also a factor.
I'm looking at options for cooling water from 120 to 80F in a desert climate. As such, there must be basically zero (or minimal) water use. So far, I'm only seeing air cooled chillers as an option. What I am after is basic design data, like kWh/ton-hr cooling so that I can calculate rough operating costs. Unfortunately, I have only found some design rules of thumb of around 0.28-0.3 kW/ton for chillers that I'm assuming are for HVAC use and cool water to ~50F. I read lots about increased condenser temps reducing the energy requirement, so I'm also assuming that my application will be more efficient than the above ROT...? I'm hoping someone here can point me in the right direction. I'm also interested in approximate order of magnitude capital cost differences relative to cooling tower. I'm looking at a very large cooling requirement, approximately 40,000 tons of cooling, so economy of scale is also a factor.