Last updated:
Tuesday, 07 February 2012

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HVJ Boiler Efficiency

Boiler Efficiency Vs. Equivalent Electric Price

Dramatically reduce energy costs using off-peak power

Use this table to calculate your equivalent electrical price for natural gas.  For example, if your gas price (or expected price) is $9.50 per therm and your boiler has a total steam generation efficiency of 70%, then the equivalent electric price is $0.041 per KW/hour (see example on table).  Compare this to your off-peak electric rates.

A savings of $0.02 per KWH can mean a company would save half its energy costs. (For a typical company this could amount to more than a half million dollars per year).

 Gas Vs. Electricity Cost Comparison

Natural Gas Price (Therm) per 1000 cu. ft.KWH Price (per % of boiler efficiency)
100%95%90%85%80%75%70%65%60%55%50%
 4.000.0120.0130.0130.0140.0150.0160.0170.0190.0200.0220.024
4.500.0140.0140.0150.0160.0170.0180.0190.0210.0230.0250.027
5.000.0150.0160.0170.0180.0190.0200.0220.0230.0250.0270.030
5.500.0170.0170.0180.0200.0210.0220.0240.0260.0280.0300.033
6.000.0180.0190.0200.0210.0230.0240.0260.0280.0300.0330.036
6.500.0200.0210.0220.0230.0250.0260.0280.0300.0330.0360.039
7.000.0210.0220.0240.0250.0260.0280.0300.0330.0350.0380.042
7.500.0230.0240.0250.0270.0280.0300.0320.0350.0380.0410.045
8.000.0240.0250.0270.0280.0300.0320.0350.0370.0400.0440.048
8.500.0260.0270.0290.0300.0320.0340.0370.0400.0430.0470.051
9.000.0270.0290.0300.0320.0340.0360.0390.0420.0450.0490.054
9.500.0290.0300.0320.0340.0360.0380.0410.0440.0480.0520.057
10.000.0300.0320.0340.0360.0380.0400.0430.0460.0500.0550.060
10.500.0320.0330.0350.0370.0400.0420.0450.0490.0530.0580.063
11.000.0330.0350.0370.0390.0420.0440.0470.0510.0550.0600.066
11.500.0350.0370.0390.0410.0430.0460.0500.0530.0580.0630.069
12.000.0360.0380.0400.0430.0450.0480.0520.0560.0600.0660.073
12.500.0380.0400.0420.0440.0470.0500.0540.0580.0630.0690.076
13.000.0390.0410.0440.0460.0490.0520.0560.0600.0650.0710.079
13.500.0410.0430.0450.0480.0510.0540.0580.0630.0680.0740.082
14.000.0420.0450.0470.0500.0530.0560.0600.0650.0710.0770.085
14.500.0440.0460.0490.0520.0550.0580.0630.0670.0730.0800.088
15.000.0450.0480.0500.0530.0570.0600.0650.0700.0760.0820.091
15.500.0470.0490.0520.0550.0590.0620.0670.0720.0780.0850.094
16.000.0480.0510.0540.0570.0600.0640.0690.0740.0810.0880.097
16.500.0500.0520.0550.0590.0620.0660.0710.0770.0830.0910.100
17.000.0510.0540.0570.0600.0640.0680.0730.0790.0860.0930.103
17.500.0530.0560.0590.0620.0660.0710.0760.0810.0880.0960.106
18.000.0540.0570.0600.0640.0680.0730.0780.0840.0910.0990.109