Some of the applications can be broadly categorized into: "General pressurizing" - application where only pressure is required. These compressors are usually energy-saving. For some applications, air compression doesn't require continuous pumping of air and this is achieved by means of reciprocating compressor. "Contraction" - application where discharge pressure is very low. These are in most case industrial compressors. They suffer from high noise and low cycle life. "Filtration" - application where finely distributed particles are entrained in the working medium. Often, these particles should not be admitted into the process. Examples include air scrubbers, exhaust and many other related applications. "Pneumatic transfer" - application where a working medium is transferred, (pump one liquid from one vessel to another). Though in this case, a pump is required, there is no need to keep the working medium in a high pressure. "Absorption" - application where a working medium is absorbed into the process. Many industrial plants are covered with absorbent beds and this system requires a compressor to deliver and remove the working medium.
Warranties and service level agreements are far more important that warranty. In some cases, a compressor maintained by the manufacturer himself has no warranty at all! The only responsible party is the manufacturer. He/She guarantees that the compressor will be defect free for the warranty period.
As usual, this week we reported news on a range of programming languages, framworks and tools and about software development as a profession. We also saw the Atlas humanoid robot preparing to do real work. Our two featured articles are both extracts from books published as part of the I Programmer library.
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