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Technically Catholic's avatar

Hi Tomas, good message here! I would like to refine your points a little because conserving energy in buildings is my current profession.

First, I am more conservative than you about legionella. I advise keeping the hot water circulating at 60 C and cooling by dilution at the point of use. 60 C is sterilizing, not just retarding the bacteria that cause legionella.

Second, for office buildings and the like, evaluate when they are needed and turn off lighting and HVAC unless requested. Modern buildings can be controlled using occupancy sensors rather than timers and schedulers.

For latitudes less than, say, 35 degrees, air conditioning and dehumidification use tremendous amounts of electricity, much of this derived from oil and gas. Saving power in the summer reduces natural gas demand, so it can be diverted to Northern Europe in the winter.

A little-considered issue in bigger buildings is the amount of air exhausted. That air has to be replaced by fresh air, which has to be cooled and dehumidified or heated. Most air is exhausted from restrooms, reasonably enough. But the fans are often “always on” and on at full speed. This can be modified to an as-needed basis if the engineering is done well. The amount of fresh air has to track with the exhaust.

Your thoughts on diversification of energy sources is spot on. Oddly enough, the earthquakes generated by oil production come from disposal of the rather nasty water that comes up with the gas and petroleum. Pumping that water down a 5 km deep well leads to a 5 km tall water column. The pressure from that water column causes the quakes. Cleaning up the water or very careful injection can avoid the quakes.

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VictoriaF's avatar

Tomas, I agree with your theme of reducing the West's dependence on the Russian energy, which is reflected in my "like" vote.

However, your statement that the support for the war is waning in Russia is inaccurate. Today, (7 September 2022), Carnegie Endowment for International Peace (CEIP) has issued a report "My Country, Right or Wrong: Russian Public Opinion on Ukraine," https://carnegieendowment.org/2022/09/07/my-country-right-or-wrong-russian-public-opinion-on-ukraine-pub-87803 , which details Russian opinions. Figure 1 of the report shows only mild reduction in support. In March, 53% supported the war definitely and 28% mostly, for the total of 81%. In June, the numbers were 47% + 28% = 75%.

The Russians blame not Putin but the West for their economic decline. The Russians are habituated to the sanctions since 2014. The economic loss is balanced with the national pride about the Russian strength and significance, and the Russians rally round the flag.

I used to think that opinion polls are unreliable because people would not want to risk their freedom by giving answers that contradict the government views. But the authors of the CEIP report assert that the Levada Center poll was conducted according to the international standards.

Victoria

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