Units of Measure - Home Energy Information - page 17

Fig. 2.2 Propane gauge

Fig. 2.3 Fuel oil tank gauge

2.4 British Thermal Units

The great thing about British Thermal Units (BTU) is that we can convert any of
the units we talked about previously to the BTU. That is because they all involve
transfer or release of heat when consumed. Scientists initially defined the BTU as
the amount of heat required to raise the temperature of one pound of water one
degree Fahrenheit. However, they found that it depended on the initial temperature

Table 2.2 Propane use log
Propane use log
Date

Gallons in tank Gallons added Gallons used

1/1/2014 152

2/1/2014 75 77

2/10/2014 49 120 26

3/1/2014 139 30

4/1/2014 84 55

4/15/2014 66 100 18

5/1/2014 155 11

6/1/2014 146 9