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Cooling tower

What is a Cooling Tower System? The term "Cooling Tower System" can be a complex issue when there is more than one cooling tower on a particular site. Land owners may have more than one cooling tower system on a site. Legislation requires all cooling tower systems be registered. The following questions and diagrams should assist you to complete the registration forms correctly. Is there only one cooling tower on the site? Yes. Then you have only one cooling tower system. Do all of the cooling towers on the site share the same recirculating water? Yes. Then you have only one system. No. Then you have multiple systems. Are there two or more cooling tower systems on the site? Yes. A Part Two of the application form is required for each system. See Example 3 overleaf. No. Only one Part Two of the application form must be completed. See Example 2 overleaf. If you are unsure - Go to back to Situation 2. Situation 4. Do you have a multi cell cooling tower system? ...

Gas lif t

This secondary recovery process utilises the buoyancy of high-pressure to physically lift oil from the depths of the well. Gas is injected into the annulus between the casing and the tubing. The gas travels down the annulus until it reaches the packer which acts as a seal between the oil producing formation, the casing and the tubing to prevent gas from entering the producing zone. The packer forces the gas through the gas lift valve into a column of oil. The high pressure gas rises up thought the tubing in solution with the oil towards the surface. Gas lift requires a head of pressure in excess of the bottom hole well pressure and therefore is an application ideally served by barrel compressors

Gas inject ion

There comes a point in the life-cycle of any oil reserve when primary recovery can no longer be undertaken due to natural gas depletion. Extra compression is required to force the oil to the surface in a process known as secondary recovery. Gas injection is one such form of secondary (or tertiary) recovery. Two or more wells are employed where at least one is required for the sole purpose of injecting gas into the reservoir. Denser oil from the depths of the reservoir is displaced towards the bores of the producing wells. The process can occur thousands of feet underground and therefore requires the tremendous head of pressure that a barrel compressor can generate.

Traffic light control and coordination

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A traffic signal is typically controlled by a controller inside a cabinet mounted on a concrete pad. Although some electro-mechanical controllers are still in use , modern traffic controllers are solid state. The cabinet typically contains a power panel, to distribute electrical power in the cabinet; a detector interface panel, to connect to loop detectors and other detectors; detector amplifiers; the controller itself; a conflict monitor unit; flash transfer relays ; a police panel, to allow the police to disable the signal; and other components. Computerized traffic control box In the United States, controllers are standardized by the NEMA , which sets standards for connectors, operating limits, and intervals. [ 1 ] The TS-1 standard was introduced in 1976 for the first generation of solid-state controllers. [ 3 ] Traffic controllers use the concept of phases , which are directions of movement grouped together. [ 4 ] For instance, a simple intersection may ha...

Fabricating of Steel Structures

Candidates must achieve TEN units made up of: ♦ all EIGHT of the Mandatory units plus ♦   MANDATORY UNITS - Candidate must achieve all EIGHT units Unit Title and Ref. Number Unit FSS1: power tools Shape components of fabricated steel structures by removal using hand and Unit FSS2: Prepare work areas for the fabrication of steel structures Unit FSS3: Prepare materials for the fabrication of steel structures Unit FSS4: Prepare equipment for the fabrication of steel structures Unit FSS5: Reinstate the work area after completing the fabrication of steel structures Unit CO1: Contribute to effective working relationships Unit CO2: Work safely and comply with emergency procedure Unit CO3: Deal with hazards in the work environment TECHNICAL OPTIONS - Candidates must achieve any TWO units. Unit Title and Ref. Number Unit FSS6: Assemble components of steel fabrications to meet specification Unit FSS7: Store steel structure fabrication related reso...

Unified communications: End of the line for the phone?

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They are ready to invest heavily in a shipment of your new and improved flux capacitor - a sale equivalent to the GDP of a medium sized African nation. If you can clinch this you'll be wearing a jet pack to fly up the greasy pole. Continue reading the main story But Bob isn't answering the phone and you don't know where he is, or who else may be able to help you. Your dreams of early retirement on your yacht in the Caribbean slip away into the ether. Is there anything that could have avoided this? Well, if the hype is to be believed, unified communications (UC) may have saved the day. Tech talk Jargon like this can seem daunting to those uninitiated in the dark arts of IT and telephony. But what it actually means is bringing together all of the communication tools you use on a daily basis - phone, email, messaging, even video conferencing and social media - and running them from a single platform. This should allow you to see where your staff are,...

Jelly batteries: Safer, cheaper, smaller, more powerful

A new polymer jelly could be the next big step forward for lithium batteries. The jelly replaces the volatile and hazardous liquid electrolyte currently used in most lithium batteries. Researchers from the University of Leeds hope their development leads to smaller, cheaper and safer gadgets. Once on the market, the lithium jelly batteries could allow lighter laptop computers, and more efficient electric cars. In 2006, Dell recalled four million laptop batteries because of concerns that they might catch fire. Dell replaced them with batteries that used lower-performance electrodes, but these batteries were significantly larger. Battery size still dictates the size and weight of most laptops, say the developers of the new battery. Electronics manufacturer Apple got around the safety problem for their lightweight laptops with a solid polymer electrolyte, but in doing so, the power output of the computers suffered. Overheating is also an issue for electric cars. Developer...