December 07, 2022, 02:01:25 AM
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Topic: Produce Food and Biomass  (Read 1157 times)

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Offline Enthalpy

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Produce Food and Biomass
« on: August 10, 2022, 03:01:23 PM »
Hello nice people!

The 2021 harvest was bad in Europe and some other locations due to drought. Natural gas has gotten badly expensive, but it provides the hydrogen for ammonia and then fertilizers. The war in Ukraine made everything worse. And now, strong drought in Europe will reduce the 2022 harvest. Even as Ukraine's crop exports resumed, were heading into a food crisis.

I had suggested that seaweed should be considered
  chemicalforums
Several companies develop it in Europe, which presently lags far behind Asia. Nice report by the Beeb
  BBC
Seaweed is considered as human food, animal feed, fertilizer, biofuel and more.

Offline Enthalpy

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Re: Produce Food and Biomass
« Reply #1 on: September 13, 2022, 10:18:38 AM »
Many rich countries put far too much sucrose in the food. In Germany, even the supermarket's pizza diavola adds sugar to the chilli, porca miseria! 80M Germans ingest 32kg/year sucrose while WHO recommends less than 9kg/year.

I already suggested to reduce these sugars to live healthier and feed more people
  chemicalforums
or we could just burn the noxious sugar to replace fuels. Sucrose provides 16.5MJ/kg
  srd.nist.gov p24/58
so if 80M Germans swallow 10kg/year less each, the country has 420MW more fuels. Or if really reducing to 9kg/year, it's 1GW heat, the electricity output of a power plant.

Offline Reddart

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Re: Produce Food and Biomass
« Reply #2 on: September 21, 2022, 07:28:40 PM »
Many rich countries put far too much sucrose in the food. In Germany, even the supermarket's pizza diavola adds sugar to the chilli, porca miseria! 80M Germans ingest 32kg/year sucrose while WHO recommends less than 9kg/year.

I already suggested to reduce these sugars to live healthier and feed more people
  chemicalforumsor we could just burn the noxious sugar to replace fuels. Sucrose provides 16.5MJ/kg
  srd.nist.gov p24/58
so if 80M Germans swallow 10kg/year less each, the country has 420MW more fuels. Or if really reducing to 9kg/year, it's 1GW heat, the electricity output of a power plant.
That is maybe a couple of days of heat during cold weather? Better than nothing I suppose.

My decision to install a geothermal system in my house 2 years ago was fortuitous, considering the cost of fuel now. What was a considerable payback time then is now a cash positive decision. I "break even" at ~$3.50/gallon fuel oil.

Offline Enthalpy

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Re: Produce Food and Biomass
« Reply #3 on: September 26, 2022, 06:37:31 AM »
Your question puzzled me. Germany consumed 130TWh of natural gas in January 2022, mostly for heating
https://www.bundesnetzagentur.de/EN/Areas/Energy/Companies/SecurityOfSupply/GasSupply/grafik_consumption.html
so 1GW over 1 year saves 9TWh or 2 January days worth of natural gas.

Natural gas costs 15€/TJ (0.05€/kWh) at the border
https://www.eek-energy.com/en/news/natural-gas/detail/news/gas-import-price-rushes-from-record-to-record.html
so 1GW over 1 year lets save 0.5G€/year, which is indeed better than nothing.

Or you can compare with a present lengthy and passionate debate in Germany about closing TWO nuclear power plants right now, or in January, or keeping them in operation longer. The unhealthily wasted sucrose is ONE power plant worth.

Though in my view, it's better to sell or give the food to hungry people than burning it.

==========

What's your geothermal system? Do you have a hot source, or do you use the ground's inertia for heating and cooling, combined with a heat pump maybe?

Offline Reddart

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Re: Produce Food and Biomass
« Reply #4 on: September 27, 2022, 02:01:42 PM »
Yes it indeed it is a ground source heatpump. It uses the ground as a heat sink to run the heatpump for heating and cooling. Also uses the waste heat of the pump to preheat the water going into the water heater. It is sized for heating in my climate (upstate New York), so the airconditioning in the summer is uber overkill. I could make my whole house into a meat locker in less than an hour if I so desired.

I'll turn my temperature setting down a degree for a day this winter to show my solidarity with the Germans.

Offline Enthalpy

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Re: Produce Food and Biomass
« Reply #5 on: September 27, 2022, 05:09:25 PM »
Nice of you! I wash my hands and the dishes with cold water in solidarity with the Ukrainians. And to keep some fuel for this winter. But the situation here isn't so critical: the federal gov just announced the gas storage is 91% full.

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