Lubs Tech Compressed Air Systems Lubs Tech Compressed Air Systems

Air Leakage Calculator
Air Leakage Calculator

Air Leakage Calculator

Wasted Energy Cost

Parameter Example Data Unit Comment
Rated Free Air Delivery (FAD) 424 cfm Rated Free Air Delivery rate of the compressor (424 cfm typical for a 75kW Compressor)
Time on Load 3 [min] Time interval for compressor to load
Time off Load 10 [min] Time interval for compressor to unload
% Air Leaks 23% [%] = (Time on Load [min] x 100) / (Time On Load [min] + Time Off Load [min])
Air Leakage rate 46 [cfm] = (% Air Leaks [%]) x (Rated Free Air Delivery [cfm])
Approximate Energy Wasted 32,308 [kWh/y] = (Air Leakage Rate [cfm]) x 700 [kWh/(cfm)]
Average Electricity Price $0.140 [$/kWh] Insert from Energy Bills Analysis Tool
Approximate Energy Cost of Leakage $4,523.08 $1,400.00 [$/y] = (Approximate Energy Wasted [kWh/y]) x (Average Electricity Price [$/kWh])

Savings From Reducing Leak

Parameter Example Data Unit Comment
Motor Power 111.90 [kW] Motor rating of compressor that can be Switched Off
Motor Efficiency 92% [%] Motor efficiency for compressor that can be Switched Off (default = 92%).
Average Part Load Condition 70% [%] Average compressor loading expressed as a percentage of the CFM rated capacity. (Default: Modulating machines = 70%; Load/unload with little storage = 70%; Load/unload with a lot of storage = 40%; Variable inlet volume = 40%; VSD = 20%)
Annual Operation Hours Saved (Off) 6,000 [h/y] 24h/7d = 8,760 hours; 24h/5d = 6,240 hours; 8h/5d = 2,080 hours.
Annual Energy Savings 5,10,848 [kWh/y] = (Motor Power of Compressor that is turned Off [kW]) / (Motor Efficiency [%]) x (Average Part Load of Compressor [%]) x (Annual Operating Hours [h])
Average Electricity Price $0.140 [$/kWh] Insert from Energy Bills Analysis Tool
Annual Cost Savings $71,519 $1,62,500 [$/y] = (Annual Energy Savings [kWh/y]) x (Average Electricity Price [$/kWh])

Lubs Technologies, Inc.

Contact: Mike Maines
7015 Brookville Rd.
Indianapolis, IN 46239
Phone 800-447-0247