kingbob LSU Fan Sorrento, LA Member since Nov 2010 30608 posts
Calling all HVAC technicians, LSU CM graduates, and EngineersPosted by kingbob on 9/16/13 at 12:55 am
I am working on two problems for my Mechanical/Electrical class (Prof Spring) and my professor gave us two questions for homework that have little to no corresponding information in the notes or textbook readings that can help to solve it.
1. A 2 ton, air-cooled, DX window unit has a SEER of 14. If the unit operates for 1,800 hours during the summer, how many kWh of electricity will be used?
I know that for every ton of unit, it can cool approximately 12,000BTUH. I also know that 14 seer means it gets 14 BTUs/Watt of energy. the farthest I've gotten is 12,000 BTUH * 2 ton * 1800 hours = 43,200,000 BTU / 14 BTU/Watt / 1000 Watts/kW = 3086 kW
How do I proceed? Do I multiply back by the 1800 hours to get kilowatt hours?
2. How much space would be required for air handlers and the heating-cooling equipment for a 120,000 sf office building?