Engineering Outlook

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? ...

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

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.

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...