Hello
I would like to hear your opinions on energy efficient ice rink chillers. Talking with some engineers recently they advised me that inverter driven compressors are 20-25% more economical than our current screw compressors. We have a packaged chiller with 2 screw compressors, shell and tube evaporator and air condensers. I also read online that new systems with NH3 (small amount around 200ltrs) and glycol are very efficient. What do you guys think? We average 25000-30000 KWh per month on electricity with our current system for an ice area of 700 sq.meters.