Controlling the gas - why?
You have to control things in your house all the time. Do you leave the lights on all the time? (I hope not!) Do you have heating on all day, every day? I doubt it! You have to control them.
Gas customers don't use the same amount of gas all the time. Sometimes they need more, sometimes less, but the gas has to be at the correct pressure all the time. As customers use more or less gas, the pressure will change, so the gas has to be controlled.
When customers are not using much gas, the compressor can run slowly |
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When customers need more gas, it makes the pressure drop |
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To make the pressure high enough the compressor must run faster |
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Sounds simple, doesn't it - but there is a problem with this...