General > General Technical Chat
"Gas Armageddon": Energy/electricity prices in EU/UK (and how to deal with them)
AVGresponding:
--- Quote from: bdunham7 on September 08, 2022, 05:18:12 pm ---
--- Quote from: tom66 on September 08, 2022, 01:30:26 pm ---I wonder if you reduce the gas pressure to domestic properties, it may limit the rate at which gas appliances can use gas. Boilers will not be able to burn as much gas, and won't produce as much heat. However, I think the issue is that this would lead to varying pressure as more appliances turn on, which could create some issues.
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Gas distribution systems here all have local (typically per-user/per-meter) pressure regulators that reduce the gas to the very low ~0.25 bar that the appliances need. The distribution system is at much higher pressure and reducing that won't affect the pressure at the point of use.
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They do here too. I expect the variations people are seeing in the time it takes to boil a kettle are more to do with the ambient temperature, temperature of the water prior to boiling, and volume of water being boiled, than anything else.
fourfathom:
--- Quote from: AVGresponding on September 08, 2022, 05:40:55 pm ---I expect the variations people are seeing in the time it takes to boil a kettle are more to do with the ambient temperature, temperature of the water prior to boiling, and volume of water being boiled, than anything else.[/color][/size][/b]
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I'm not suggesting that this is the case, but can they change the gas "blend", resulting in fewer BTUs per unit?
Siwastaja:
--- Quote from: fourfathom on September 08, 2022, 05:48:33 pm ---I'm not suggesting that this is the case, but can they change the gas "blend", resulting in fewer BTUs per unit?
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Definitely, but #1 reason would be people measuring neither the volume of water nor time even if they seem confident about these parameters.
bdunham7:
--- Quote from: fourfathom on September 08, 2022, 05:48:33 pm ---I'm not suggesting that this is the case, but can they change the gas "blend", resulting in fewer BTUs per unit?
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Yes, to an extent. This actually happens routinely as the blend changes depending on sources, etc and that is why the typical gas bill is per 'therm', which is a unit of energy. Your meter measures the volume and then the gas company applies a correction factor based on the average energy content of the gas over the billing period to convert the volume to therms.
coppice:
--- Quote from: fourfathom on September 08, 2022, 05:48:33 pm ---I'm not suggesting that this is the case, but can they change the gas "blend", resulting in fewer BTUs per unit?
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They can't avoid changing the blend. Natural gas has a high percentage of methane wherever it comes from, but other gases are in their too. Those gases vary from gas field to gas field, As a utility changes its sources of natural gas the blend and the calorific value changes. Depending where you live there may be something on your bill which is a correction factor for the average calorific content of the gas supplied in your area over the billing period.
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