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On Qeshm island, on the persian gulf, summer is very hot, more than 45°C... For centuries the local people catch the wind from the sea thanks to those wind towers that refresh the house.
Taken with Sony a7r2
© Eric Lafforgue
Blue-gray tanager or sanhaço-da-amazônia (Thraupis episcopus or Tangara episcopus - Thraupidae, the tanager family)
Perched under wall-mounted air conditioner units
Manaus, Brazil
JLLL3759-HDR.m
No interior do submarino NRP Barracuda, atualmente atracado em Cacilhas como museu, observa-se uma secção técnica com um complexo sistema de tubagens, válvulas e condutas metálicas. Este sistema, essencial para a ventilação, pressurização e equilíbrio da pressão interna em imersão, permitia o controlo manual de fluidos como ar comprimido, água do mar e combustível. Destaca-se a presença de válvulas de controlo, incluindo quatro válvulas manuais com volantes circulares pretos, e de painéis elétricos com sinalização de alta tensão e avisos, indicando circuitos de arrefecimento, sistemas hidráulicos e o sistema de propulsão. Estas tubagens e válvulas são parte integrante dos sistemas essenciais para a operação subaquática e a segurança da tripulação. O Barracuda, pertencente à classe Albacora/Daphné, serviu na Marinha Portuguesa entre 1968 e 2010, oferecendo hoje aos visitantes uma visão das condições técnicas e operacionais deste tipo de navio militar.
Inside the submarine NRP Barracuda, currently moored in Cacilhas as a museum, we can see a technical section with a complex system of pipes, valves and metal ducts. This system, which was essential for ventilation, pressurization and internal pressure balance when immersed, allowed for the manual control of fluids such as compressed air, seawater and fuel. Noteworthy are the presence of control valves, including four manual valves with black circular handwheels, and electrical panels with high-voltage signs and warnings, indicating cooling circuits, hydraulic systems and the propulsion system. These pipes and valves are an integral part of the essential systems for underwater operation and crew safety. The Barracuda, belonging to the Albacora/Daphné class, served in the Portuguese Navy between 1968 and 2010 and today offers visitors an insight into the technical and operational conditions of this type of military vessel.
Typically ESA’s shaker tables are used to replicate the take-off vibrations of a satellite-lifting rocket. The large object seen here is not a satellite at all but an 8-tonne cooling system being subjected to a simulated earthquake – while blasting a chilly wave of air towards the engineer observing the test.
Manufactured by Munters in Belgium, this mammoth 6 x 4 x 5 m cooling system is designed to remove heat from industrial-scale data centres while using just a fifth of the energy of traditional designs.
The system travelled three hours by road to ESA’s Test Centre in Noordwijk, the Netherlands, for testing to prove it can carry on running even in the midst of an earthquake with a peak ground acceleration of 1G on 3 axes – equivalent to a violent Level IX earthquake, stronger than the Fukushima earthquake of 2011.
“To export to the Japanese market we have to satisfy very stringent seismic testing requirements,” says Craig MacFadyen of Munters. “We need to show the cooling system doesn’t fall to pieces and maintains its functionality during different grades of earthquakes.”
Testing was performed on ESA’s Hydra multi-axis hydraulic shaker, the Test Centre’s single most powerful shaker. See video of the testing here.
“Hydra’s hydraulic actuators move an 18-tonne shaker table in all three orthogonal axes simultaneously, in a similar fashion to an aircraft flight simulator,” explains Alexander Kuebler of ETS, the company operating the Test Centre for ESA.
“The motion of these actuators is overseen by a network of 36 parallel computers. The entire installation is braced by a seismic mass supported by springs and shock absorbers to prevent the resulting earthquake-strength vibrations spreading through the rest of the Test Centre. Up to 512 acceleration measurement channels can be used during testing, acquiring the maximum possible data for the customer.”
Hydra has served many of Europe’s largest space missions, including Envisat – at 8 tonnes the largest-ever civil Earth observation satellite – Herschel, and the Automated Transfer Vehicle, which weighed 22 tonnes at launch.
Hydra can also accommodate non-space customers when its schedule allows, such as the testing of generators for the underside of trains and an Airbus fuselage to simulate the stresses of approach and landing.
ESA’s Test Centre in the Netherlands is the largest facility of its kind in Europe, providing a complete suite of equipment for all aspects of satellite testing under a single roof.
Credits: ESA–G. Porter, CC BY-SA 3.0 IGO
This ingenious Persian cooling system, in the form of two towers (or dastagirs ) called the Sawan Bhadon pillars were perforated on the top in order to catch the wind, while the lower part of the towers was connected to a reservoir of water.
Beautifully simple engineering! The side exhaust valve gear is exposed (The inlet valves are on the other side) a fairly common practice at this time, the silver and black object in the center is the magneto, with the distributer mounted on the rear end and the shaft is chain driven off the crankshaft. The rod at the rear of the magneto under the distributer cap is part of the linkage connecter to the ignition advance and retard lever mounted in the hub of the steering wheel.
The pulley at the front of the shaft, with it's leather universal joint drives the fan and the water pump via the linked belt, note the brass taps for bleeding air out of the cooling system, the lubrication cup at the front of the shaft and the spare spark plugs in the bracket mounted on the firewall bulkhead.
See also www.flickr.com/photos/catrionatv/46277383671/in/dateposted/ for a photo and further details of this vehicle
A simple air duct vent takes on a whole new life in this negative space image. It is no longer an eyesore on a wall, but a piece of art.
A bad day for me and my port engine's cooling system - freshwater intake impeller debris jamming inlet to transmission heat exchanger
Cooling fan room at the Svalbard Global Seed Vault.
Credit: Mari Tefre/Global Crop Diversity Trust
visit us online: www.croptrust.org
After a long compulsory break I'm back again at flickr.
This coolingsystem belongs to the ancient carbon dust powerstation in Dortmund-Derne, Germany. It's part of the knocked down coal mine Gneisenau.
Image-Data: 24.8.08, 12:15h, Sony D-SLR A100, Kit-Zoom, 55mm, F16, ISO-100, HDR 3x RAW: 1/13s - 1/50s - 1/200s.
Processing: Tonemapping, partial tone- and collorcorection, dodge&burn.