A one cubic foot test dial on a natural gas meter makes one revolution every 22 seconds. Approximately how many Btuh are being generated?

To determine the heating value in BTU per hour (Btuh) based on the performance of a natural gas meter, we can analyze the specific parameters given in the question. A one cubic foot test dial making one revolution every 22 seconds indicates the flow rate of natural gas being measured.

First, calculate how many cubic feet of gas flows through the meter in one hour. Since there are 3600 seconds in an hour, we can find the number of revolutions (and thus cubic feet of gas) in one hour:

3600 seconds/hour divided by 22 seconds/revolution results in approximately 163.64 revolutions per hour. Since each revolution indicates one cubic foot of gas, this means that about 163.64 cubic feet of natural gas flows through the meter each hour.

Next, to convert this volume to BTUs, we need to use the approximate heating value of natural gas, which is typically around 1,000 BTUs per cubic foot (this can vary based on the gas composition and local standards, but this is a common figure for estimation).

Thus, multiplying the cubic feet per hour by the heating value gives:

163.64 cubic feet/hour × 1000 BTU/cubic foot = 163,640