A one cubic foot test dial on an NG meter makes one revolution every 22 seconds. Approximately how many BTUH are being generated?

To determine how many BTUH (British Thermal Units per Hour) are being generated based on the meter's dial revolutions, we first need to understand the relationship between the dial's movement and the gas flow rate. Since the test dial shows one cubic foot per revolution and it takes 22 seconds for one revolution, we can calculate the flow rate in terms of cubic feet per hour.

In one hour, there are 3,600 seconds. Therefore, the number of revolutions in one hour can be calculated as follows:

[ \text{Revolutions per hour} = \frac{3600 \text{ seconds}}{22 \text{ seconds/revolution}} \approx 163.64 \text{ revolutions per hour} ]

Since each revolution corresponds to one cubic foot of gas, this means about 163.64 cubic feet of gas are flowing per hour.

Next, we need to convert the flow rate from cubic feet per hour to BTUH. Natural gas has a heat content that can vary slightly, but a common average is about 1,000 BTUs per cubic foot for natural gas. Therefore, to find the BTUH being generated, we multiply the flow rate in cubic feet per hour by the heat content