Thomas Hawk posted a photo:
"China recently placed a supercritical carbon dioxide power generator into commercial operation," writes CleanTechnica, "and the announcement was widely framed as a technological breakthrough."
The system, referred to as Chaotan One, is installed at a steel plant in Guizhou province in mountainous southwest China and is designed to recover industrial waste heat and convert it into electricity. Each unit is reported to be rated at roughly 15 MW, with public statements describing configurations totaling around 30 MW. Claimed efficiency improvements range from 20% to more than 30% higher heat to power conversion compared with conventional steam based waste heat recovery systems. These are big numbers, typical of claims for this type of generator, and they deserve serious attention.
China doing something first, however, has never been a reliable indicator that the thing will prove durable, economic, or widely replicable. China is large enough to try almost everything. It routinely builds first of a kind systems precisely because it can afford to learn by doing, discarding what does not work and scaling what does. This approach is often described inside China as crossing the river by feeling for stones. It produces valuable learning, but it also produces many dead ends. The question raised by the supercritical CO2 deployment is not whether China is capable of building it, but whether the technology is likely to hold up under real operating conditions for long enough to justify broad adoption.
A more skeptical reading is warranted because Western advocates of specific technologies routinely point to China's limited deployments as evidence that their preferred technologies are viable, when the scale of those deployments actually argues the opposite. China has built a single small modular reactor and a single experimental molten salt reactor, not fleets of them, despite having the capital, supply chains, and regulatory capacity to do so if they made economic sense... If small modular reactors or hydrogen transportation actually worked at scale and cost, China would already be building many more of them, and the fact that it is not should be taken seriously rather than pointing to very small numbers of trials compared to China's very large denominators...
What is notably absent from publicly available information is detailed disclosure of materials, operating margins, impurity controls, and maintenance assumptions. This is not unusual for early commercial deployments in China. It does mean that external observers cannot independently assess long term durability claims.
The article notes America's Energy Department funded a carbon dioxide turbine in Texas rated at roughly 10 MW electric that "reached initial power generation in 2024 after several years of construction and commissioning." But for both these efforts, the article warns that "early efficiency claims should be treated as provisional. A system that starts at 15 MW and delivers 13 MW after several years with rising maintenance costs is not a breakthrough. It is an expensive way to recover waste heat compared with mature steam based alternatives that already operate for decades with predictable degradation..."
"If both the Chinese and U.S. installations run for five years without significant reductions in performance and without high maintenance costs, I will be surprised. In that case, it would be worth revisiting this assessment and potentially changing my mind."
Thanks to long-time Slashdot reader cusco for sharing the article.
The system, referred to as Chaotan One, is installed at a steel plant in Guizhou province in mountainous southwest China and is designed to recover industrial waste heat and convert it into electricity. Each unit is reported to be rated at roughly 15 MW, with public statements describing configurations totaling around 30 MW. Claimed efficiency improvements range from 20% to more than 30% higher heat to power conversion compared with conventional steam based waste heat recovery systems. These are big numbers, typical of claims for this type of generator, and they deserve serious attention.
China doing something first, however, has never been a reliable indicator that the thing will prove durable, economic, or widely replicable. China is large enough to try almost everything. It routinely builds first of a kind systems precisely because it can afford to learn by doing, discarding what does not work and scaling what does. This approach is often described inside China as crossing the river by feeling for stones. It produces valuable learning, but it also produces many dead ends. The question raised by the supercritical CO2 deployment is not whether China is capable of building it, but whether the technology is likely to hold up under real operating conditions for long enough to justify broad adoption.
A more skeptical reading is warranted because Western advocates of specific technologies routinely point to China's limited deployments as evidence that their preferred technologies are viable, when the scale of those deployments actually argues the opposite. China has built a single small modular reactor and a single experimental molten salt reactor, not fleets of them, despite having the capital, supply chains, and regulatory capacity to do so if they made economic sense... If small modular reactors or hydrogen transportation actually worked at scale and cost, China would already be building many more of them, and the fact that it is not should be taken seriously rather than pointing to very small numbers of trials compared to China's very large denominators...
What is notably absent from publicly available information is detailed disclosure of materials, operating margins, impurity controls, and maintenance assumptions. This is not unusual for early commercial deployments in China. It does mean that external observers cannot independently assess long term durability claims.
The article notes America's Energy Department funded a carbon dioxide turbine in Texas rated at roughly 10 MW electric that "reached initial power generation in 2024 after several years of construction and commissioning." But for both these efforts, the article warns that "early efficiency claims should be treated as provisional. A system that starts at 15 MW and delivers 13 MW after several years with rising maintenance costs is not a breakthrough. It is an expensive way to recover waste heat compared with mature steam based alternatives that already operate for decades with predictable degradation..."
"If both the Chinese and U.S. installations run for five years without significant reductions in performance and without high maintenance costs, I will be surprised. In that case, it would be worth revisiting this assessment and potentially changing my mind."
Thanks to long-time Slashdot reader cusco for sharing the article.
Read more of this story at Slashdot.
WASHINGTON (ANP/RTR) - Het Amerikaanse ministerie van Binnenlandse Veiligheid stuurt honderden extra agenten naar de Amerikaanse staat Minnesota. De inzet komt een dag nadat tienduizenden mensen door de stad Minneapolis in Minnesota marcheerden om te protesteren tegen het doodschieten van een vrouw door een agent van de immigratiedienst ICE.
De agenten worden ingezet voor de veiligheid van de ICE-agenten en grenswachters die al in Minnesota zijn, aldus minister Kristi Noem van Binnenlandse Veiligheid. Washington stuurde al ongeveer 2000 agenten naar de regio Minneapolis-St. Paul.
Ook elders in de Verenigde Staten waren demonstraties tegen het uitzettingsbeleid van de overheid en de schietpartij in Minneapolis, die de 37-jarige Renee Good het leven kostte. Autoriteiten in Minnesota noemen de ingreep ongerechtvaardigd. Zij wijzen op beelden van omstanders waarop te zien zou zijn dat Goods auto wegreed van de agent toen hij schoot. Volgens Noem was het zelfverdediging.
"Cuba bereidt zich voor en staat klaar om het vaderland tot de laatste druppel bloed te verdedigen." Dat schreef de Cubaanse president Miguel Díaz-Canel op X.
Eerder zondag had de Amerikaanse president Donald Trump Cuba aangeraden een deal te sluiten "voordat het te laat is", zo schreef hij op Truth Social. Er gaat geen olie of geld uit Venezuela meer naar Cuba, voegde hij daaraan toe.
"Cuba is een onafhankelijke, vrije en soevereine natie", benadrukte Díaz-Canel in zijn bericht. "Niemand zal voor ons bepalen wat wij moeten doen."
De Cubaanse president wees erop dat zijn land niemand aanvalt, terwijl de Verenigde Staten Cuba al 66 jaar lang bedreigen en economische sancties opleggen. "Cuba bedreigt niemand, maar is bereid het vaderland tot de laatste druppel bloed te verdedigen."
Weer voor Rotterdam ☁️
Huidige temperatuur (om 19:15): 0.1°C (Bewolkt)Windsnelheid: 24.8 km/u (6.9 m/s), richting: ↓ 159°
Luchtkwaliteit:
- AQI: 52 🟡 (Matig)
- PM2.5: 14.1 μg/m³
- PM10: 18.3 μg/m³
Voorspelling voor de komende dagen:
- zondag 11 januari: Min -3.5°, Max 0.9° (Matige motregen) 🌦️, Neerslag 0.8, Kans op neerslag 10%, Windsnelheid: 29.5 km/u (8.2 m/s), richting: ↘ 154°
- maandag 12 januari: Min 1.2°, Max 6.3° (Zware motregen) 🌦️, Neerslag 4.0, Kans op neerslag 46%, Windsnelheid: 30.2 km/u (8.4 m/s), richting: ↓ 191°
- dinsdag 13 januari: Min 6.4°, Max 7.6° (Matige motregen) 🌦️, Neerslag 2.0, Kans op neerslag 38%, Windsnelheid: 19.4 km/u (5.4 m/s), richting: ↓ 176°
- woensdag 14 januari: Min 4.6°, Max 9.2° (Lichte regen) 🌧️, Neerslag 6.8, Kans op neerslag 38%, Windsnelheid: 32.4 km/u (9.0 m/s), richting: ↙ 228°
- donderdag 15 januari: Min 5.2°, Max 9.6° (Zware motregen) 🌦️, Neerslag 6.9, Kans op neerslag 27%, Windsnelheid: 22.6 km/u (6.3 m/s), richting: ↓ 193°
- vrijdag 16 januari: Min 4.4°, Max 9.2° (Lichte motregen) 🌦️, Neerslag 0.4, Kans op neerslag 25%, Windsnelheid: 23.8 km/u (6.6 m/s), richting: ↓ 197°
- zaterdag 17 januari: Min 3.5°, Max 7.2° (Bewolkt) ☁️, Kans op neerslag 18%, Windsnelheid: 13.6 km/u (3.8 m/s), richting: ↓ 174°
Uurlijkse voorspelling voor de komende 12 uur:
- 20:00: 0.2° (Bewolkt) ☁️, Kans op neerslag 9%, Windsnelheid: 25.2 km/u (7.0 m/s), richting: ↓ 161°
- 21:00: 0.3° (Bewolkt) ☁️, Kans op neerslag 21%, Windsnelheid: 25.9 km/u (7.2 m/s), richting: ↓ 159°
- 22:00: 0.4° (Bewolkt) ☁️, Kans op neerslag 37%, Windsnelheid: 25.9 km/u (7.2 m/s), richting: ↓ 161°
- 23:00: 0.7° (Lichte motregen) 🌦️, Neerslag 0.1, Kans op neerslag 58%, Windsnelheid: 27.7 km/u (7.7 m/s), richting: ↓ 160°
- 00:00: 0.9° (Matige motregen) 🌦️, Neerslag 0.7, Kans op neerslag 83%, Windsnelheid: 29.5 km/u (8.2 m/s), richting: ↓ 160°
- 01:00: 1.2° (Zware motregen) 🌦️, Neerslag 1.2, Kans op neerslag 100%, Windsnelheid: 30.2 km/u (8.4 m/s), richting: ↓ 164°
- 02:00: 1.5° (Matige motregen) 🌦️, Neerslag 0.8, Kans op neerslag 100%, Windsnelheid: 27.0 km/u (7.5 m/s), richting: ↓ 171°
- 03:00: 1.8° (Matige motregen) 🌦️, Neerslag 0.8, Kans op neerslag 100%, Windsnelheid: 26.3 km/u (7.3 m/s), richting: ↓ 174°
- 04:00: 2.1° (Matige motregen) 🌦️, Neerslag 0.8, Kans op neerslag 98%, Windsnelheid: 23.8 km/u (6.6 m/s), richting: ↓ 184°
- 05:00: 2.8° (Lichte motregen) 🌦️, Neerslag 0.4, Kans op neerslag 86%, Windsnelheid: 26.3 km/u (7.3 m/s), richting: ↓ 196°
- 06:00: 2.9° (Bewolkt) ☁️, Kans op neerslag 70%, Windsnelheid: 25.6 km/u (7.1 m/s), richting: ↓ 201°
- 07:00: 3.1° (Bewolkt) ☁️, Kans op neerslag 53%, Windsnelheid: 24.8 km/u (6.9 m/s), richting: ↓ 197°
#Rotterdam #Meteo #MeteoBot #MeteoNetherlands #OpenMeteo #FediMeteo
Een volle baard, een kale kop vol tattoos en een rauwe stem. Seaneman is geen doorsnee artiest, die je in een talentenshow ziet. Sinds zijn deelname aan het SBS6-programma The Winner Takes It All en de filmpjes die daarop volgden, weten steeds meer mensen hem te vinden. "Ik doe het op mijn manier."
Sparta is uitstekend begonnen aan de tweede seizoenshelft. In de eerste wedstrijd van 2026 werd er eenvoudig afgerekend met Heracles. Door doelpunten van Tobias Lauritsen en Pelle Clement werd het 'maar' 2-0.
Astrid Roemer was ‘onverbiddelijk’ en ‘had lak aan iedereen die een gemakkelijke leeservaring eiste’
Schrijfster Astrid Roemer bleef conventies doorbreken en lezers uitdagen. Al vroeg ging haar werk over kleur, gender en ook over postkoloniaal Suriname – alles in een vorm die bewust ontregelde. „Ze wilde anderen wakker schudden.”
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