MECHANICAL VACUUM BOOSTERS:-Mechanical Vacuum Boosters are dry pumps that meet most of the ideal vacuum pump requirements. They work on positive displacement principle and are used to boost the performance of water ring /oil ring /rotating vane /piston pumps and steam or water ejectors. They are used in combination with any one of the above mentioned pumps, to overcome their limitations. Vacuum booster pumps offer very desirable characteristics which make them the most cost effective and power efficient option.The major advantages are:-(a) Can be integrated with any installed vacuum system such as Steam Ejectors, Water Ring Pumps, Oil Sealed Pumps, Water Ejectors, etc.(b) The vacuum booster is a Dry Pump as it does not use any pumping fluid. It pumps vapor or gases with equal ease. Small amounts of condensed fluid can also be pumped.(c) Vacuum boosters are power efficient. Very often a combination of Vacuum Booster and suitable backup pump results in reduced power consumption per unit of pumping speed. They provide high pumping speeds even at low pressures.(d) Boosters increase the working vacuum of the process, in most cases very essential for processperformance and efficiency. Vacuum Booster can be used over a wide working pressure range,from 100 Torr down to 0.001 Torr (mm of mercury), with suitable arrangement of backup pumps.Everest ...................... Leaders in Vacuum Booster Technology Boosters for Vacuum Process Everest Transmission January, 2005.(e) It has very low pump friction losses, hence requires relatively low power for high volumetricspeeds. Typically, their speeds, at low vacuums are 20-30 times higher than corresponding vanepumps / ring pumps of equivalent power.(f) Use of electronic control devices such as Variable Frequency Control Drive allow to modifyvacuum boosters operating characteristics to conform to the operational requirements of the primevacuum pumps. Hence they can be easily integrated into all existing pumping set up to boost theirperformance.(g) Vacuum boosters don't have any valves, rings, stuffing box etc., therefore, do not demand regular maintenance.(h) Due to vapor compression action by the booster, the pressure at the discharge of booster (or inlet of backup pump) is maintained high, resulting in advantages such as low back streaming of prime pump fluid, effective condensation even at higher condenser temperatures and improvement of the backup pump efficiency.The Table below gives a rough estimate of how the boosters enhance the working vacuums of the processes when installed in combination with various types of industrial vacuum pumps currently used in the industry. They can effectively replace multistage steam ejectors, resulting in considerable steam savings and reduced loads on cooling towers. Mechanical Vacuum Boosters are versatile machines and their characteristics depend largely on backing pump. Various types of backing pump can be used, depending upon the system requirement and ultimate vacuum needs.However, the final vacuum is governed by the suitable selection of the backing pump and boosterarrangement. The table below gives a broad range of vacuum achieved with various backing pumps combinations.Vacuum Pump Expected vacuum Vacuum on installation Range of Booster (single stage)Single Stage Ejector 150 Torr 15 - 30 TorrWater Ejector 100 Torr 10 - 20 TorrWater Ring Pump 40 - 60 Torr 5 - 10 TorrLiquid Ring Pump 20 - 30 Torr 2 - 5 TorrPiston Pumps 20 - 30 Torr 2 - 5 TorrRotary Piston Pumps 0.1 Torr 0.01 TorrRotary Vane Oil Pump 0.01 - 0.001 Torr 0.001 - 0.0001 Torr.Everest ................ Leaders in Vacuum Booster Technology Boosters for Vacuum Process Everest Transmission January, 2005.For example, if a process is using water ring Pump, the estimated working vacuums would be of the order of about 670-710 mmHg gauge (90-50 mmHg abs.), largely depending on the water temperature and pump design. When a Booster is installed prior to the water ring pump, in series, the vacuum levels of the order of 5-10 Torr can be easily achieved. In a Multi-Stage booster installation, vacuum levels of the order of 0.5 Torr & better can easily be expected. Mechanical Boosters offer a completely dry pumping solution and do not add to any vapor load, unlike steam ejectors, and therefore, do not require large inter stage condenses. At low vacuums, higher pumping speeds are required to maintain the through-put, since the specific volume increases with the increase in vacuum. Vacuum boosters enhance the pumping speeds by about 3-10 times depending upon the selection by virtue of which one can expect higher process rates and through-puts. The drawbacks of steam ejector system such as sensitivity to motive fluid pressures and discharge pressure are overcome easily by the Mechanical Boosters, since the volumetric displacements/pumping speeds are insensitive to the inlet & outlet working pressures.Typical Booster Installation(1) Evaporator (2) Gauge (3) Condenser (4) Mechanical Booster(5) backup PumpEverest ................. Leaders in Vacuum Booster Technology Boosters for Vacuum Process Everest Transmission January, 2005.Calculating the Pump Capacity: -Based on the fundamental gas laws PV= RT, an expression can be derived for Volumetric Flow Rates required for pumping different vapors/gases. Based on the Mass flow rates one can estimate the pump capacity required.V = R . Tgas / P Q1/M1 + Q2/M2 ............. Qn/MnWhere V = Inlet Volume flow rate m3/hr.R = Universal gas Constant, 83.14 mbar m3/ Kgmol x KTgas = Gas/Vapor abs. Temp, in KP = Process Absolute Pressure in mbarQ1, Q2, Q3 = Gas / Vapor flow rate, in Kg/hr.M1 , M2 ,M3 = Molar mass, in Kg/mol. of gas /vapor.Booster Operation:Power Constraints restrict the total differential pressures across the booster. This demands to ensure the total differential pressure across the Booster must not exceed the rated limits. This can be ensured by any of the following means:-1.) Manual method:- Initially the fore pump is switched on until the required cut in pressure is achieved and there-after the booster is switched on.2.) Auto method:- Installation of mechanical By-pass arrangement across the booster or hydro kinematic drive or Variable Frequency Drive (VFD). In this arrangement, the booster and fore pump can be started simultaneously from atmosphere.Advantages of using Electronic Variable Speed Control DeviceElectronic A.C Variable Frequency Control Drives are most preferred devices used to regulate theBooster speed to match the varying load conditions of the process. These drives enhance the overall performance of the Boosters and offer various advantages for the trouble free operation.The major advantages are: -1. Booster can be started directly from atmosphere.Everest ................... Leaders in Vacuum Booster TechnologyBoosters for Vacuum Process Everest Transmission January, 2005.2. No need for separate pressure switch, by pass line or offloading valves.3. Considerable savings in power.4. Prevents over-heating of Boosters.5. Protects the Booster against overload and excessive pressures.6. Offers complete protection to motor against over voltage, under voltage, over current,Over-heating, ground fault.7. Eliminates the needs of separate starter and overload relays for the Motor.8. Automatically adjusts the speed of Booster between low and high range set giving highpumping speeds with relatively low input power.The Electronic Variable Frequency Control Drive is a microprocessor based electronic drive which is specially programmed to meet the demands of the Booster allowing it to operate directly from atmosphere along with suitable fore pump. Conventionally, Boosters can be started only after achieving fore vacuum in the range of 30 - 100 Torr, as they are not recommended for direct discharge into the atmosphere. Use of Pressure Switch, Hydro kinematic drive and by pass valves is necessary to prevent the overloading of the Booster. However with the installation of Electronic Variable Frequency Control Drive all the conventional methods can be bypassed since the drive is programmed to regulate the Booster speed automatically, keeping the load on motor within permissible limits. This allows the Booster to start simultaneously with backup pump. When the backup-pump and Booster are started the drive reduces the Booster speed to the pre-set levels and as the vacuum is created the Booster speed picks up, reaching the final pre-set speed, giving most optimum performance over the entire range. Since all the parameters are easily programmable, one can adjust the booster pumping speeds to match the system requirements easily and quickly. The drive limits the current to the motor and safeguards the motor against over voltage, under voltage, electronic thermal, overheat ground faults. i.e. protects the motor against all possible faults.External computer control over all aspects of booster performance is possible via RS485 serial interface built into the drive electronics. This enables the Booster to be integrated into any computer-controlled operating system.To know more about this site visit this site: http://www.everestblowers.com
Mobile document shredding service companies come to the physical location of your business and take care document disposal for you. These services typically use a medium size truck with the shedding device built into the back of the vehicle. This is so the shredder can go to the company location and shred all the documents on site before taking the particles to the dumping area for final disposal.What are the benefits of mobile shredding service?* Containers: Many shredding companies furnish nice looking steel locking containers for use in your office. These containers can be emptied on schedule, or whenever they get full. Many mobile shredding companies offer flexible scheduling.* Certification: You may get a Certificate of Destruction. While this certificate doesnt totally absolve the business of responsibility for the document security, it does help.* Ease Of Use: Why risk transporting tons of documents off-site when you can witness the document destruction in the back of the truck right outside your office!* Unrecoverable: The professional process used by mobile shredding companies makes it impossible to reconstruct documents.* Affordable: It can cost only pennies per pound to shred business documents.* Verified Firsthand: Company personnel can witness the shredding is done on-site. You dont have to entrust the drivers and a chain of people to destroy your documentsyou can witness it firsthand without leaving your office parking lot!* Less time consuming: Shredding these documents by hand would waste valuable employee-hours. With a mobile shredding service, huge piles of documents can be shredded in a fraction of the time.Mobile shredding is probably the easiest, most secure, and most rest freeway of disposing of documents. Some of the service options frequently offered by mobile document shredding companies:Ongoing scheduled serviceOne time bulk shredding.Onsite shredding Offsite plant based shreddingOne time purgesElectronic destruction / RecyclingDaily, weekly, monthly, and semimonthly (or, biweekly) scheduleFor a company, it can be a good investment to hire a mobile shredder to come to the site regularly and dispose of sensitive documents. After all it can cost a lot of money to warehouse this type of data. Instead of documents sitting around collecting dust, a mobile shredder can make mincemeat of them with minimum hassle and clear the clutter. You can find more information about certified "mobile document shredding" and paper shredding in general at our website.
Where in the world? How many clues do you need to guess where in the world this place is .. .. .. Clue 1. The Government gives you $1000 for your personal pension plan?Clue 2. It is one of the top ten emigration destinations in the world?Clue 3. It is the first country in the world to see the new day each dayClue 4. It has the tallest building on the southern hemisphere.The answer is at the bottom of this article! If you still haven't guessed then you should join the forum with the answers! For General business information and topical news is presented daily at www.businessforums.co.nz topics covered range from business opportunities, brokers, biz networking through to recruitment and breakfast clubs.Other key facts that would interest business entrepreneurs would be that unemployment is at 3%, with a feel good economy, and the fact that the population is only 4 million and where the main language is English.Where the famous Lord of the Rings was filmed, the snow capped mountains through to the subtropical forests give this wonderful island a demand, infact only 50,000 people every year are allowed to migrate.The answer is of course? New Zealand.If you are looking for information about New Zealand and are considering emigration or business opportunity then you should seriously join the business forum of New Zealand.
Get Rich Quick Scams RevealedRead this article before you consider paying for a "get rich quick" program. From: Step Plans!Everybody would love to make lots of money quickly, working from home, and only doing a few hours of work per week. I've spent the past two years trying to find a great way of doing this. Only over the course of the past few months have I found any "get rich quick" programs worth buying. I've been trying to make money online for a long time. I had a few small websites, but they never made much more than a few hundred per month. It was easy money and didn't require much work on my part, but I knew there were people out there doing better than I was and I knew I could do as well as them. Now, I've seen a lot of "get rich quick" programs. Most of these people make claims about earning $2000/day with Google or something similarly insane. Almost all of these people are complete liars. Even if they were making $2000/day with Google AdSense, it'd be because they had high- traffic websites with a lot of quality content. I'd know, because in one whole month, I never even made half of what they promised I'd make daily with their programs. Maybe you've already been scammed by one of these fraudsters. Anyway, I finally got sick of what was being offered. I decided I'd look through the all of the "get rich quick" programs I could find and see if there were any that were actually legitimate. I found that there were owners selling their programs for well over $100, but the information in them could be found almost anywhere online for free. Additionally, they all contained out-of-date information, had no e-mail support, no money back guarantees, and broken links in the downloads section. In conclusion, almost all of the programs I found were completely useless. The owners knew it, but they couldn't care less about their customers since they didn't offer refund policies! Amazingly, while looking through all of the programs, I actually did find a few legitimate programs. They were run by ordinary people like you and me, and they had found some great methods of making money from their home by doing very little work. I spent some time working with those programs, and my income is now ten times what it used to be. These programs provided a large amount of great information on how to make extra money on your computer doing very little work. Numerous customers had provided great feedback and reviews for their products. Many of them have started to make money just days after buying! Their programs have excellent prices, and the authors have a group of paid staff who are dedicating to helping you or providing assistance if you need any. I must say I was amazed! If you do decide to purchase any of the programs listed below, I recommend you join quickly. Most of the owners tell me they are getting an overwhelming number of sales and plan on raising prices in the near future, so order while prices are still low! To Your Online Success, Step Plans!
Outsourcing = Global Momentum The global business landscape has changed dramatically in the last couple of years thanks to growth of outsourcing. Outsourcing has gained strength as a management strategy for sustaining global growth as well competitive advantage to overcome the challenges of ever growing business complexities. So whether its a Fortune 100 transnationals or even a small enterprise, everyone is looking at outsourcing as a key growth engine thanks to the increased levels of process specialization and sophistication. Domain specialization and not just economies of scale are key to the success of any outsourcing relationship. Outsourcing has been recognized to save companies and not just costs. Evolving Outsourcing Relationships Organisations now regard outsourcing as a key initiative for overall growth and not just as mere cost saving exercise. Hence organizations are increasingly seeking best-in-class outsourcing specialists and not just large best of breed outsourcing service providers. This is especially true in the IT & engineering verticals as organizations even outsource new product development tasks to specialized offshore vendors. Research intensive, customer focused outsourcing relationships now have to include the following to remain competitive: Innovation Update. Quarterly, bi-annual, or annual innovation reviews (also known as innovation boards) focus typically on state of the market, industry trends and relevant information, technology updates, solution demonstrations, site visits, etc. Leverage other industry peer groups to understand what is happening in your industry, the outsourcing industry, and other sectors. Benchmarking. Clients should always activate their benchmarking clauses and focus on best practice as comparators of innovationnot just cost comparisons. Benchmark both functional excellence and outsourced environments. Stakeholder Satisfaction Surveys. Perform monthly, quarterly, and annual customer satisfaction surveys. They should be 360 degreescovering multiple dimensions and all internal and external stakeholders. Deliver on Partnering Promise. Hold regular collaborative planning sessions. Where people are briefed on the strategic and business objectives. Service providers need to come up with implantable strategies on how best they can meet their clients business challenges. This makes the outsourcing vendors to think and act above simple tactical delivery. Value sharing framework. A transparent value-from-outsourcing sharing mechanism on a case-by-case basis should be harnessed to pay for business services delivered. Inclusion of regular mutual rewards for both your organization and that of the service provider boosts people motivation at all levels. Service Excellence. All SLAs must be tied to process excellence or customer delight will not happen. Project milestones, go-live events, and pilots are tangible means of tracking process maturity & excellence. Other measures include customer satisfaction, productivity, Six Sigma (defects), work elimination, etc. Outsourcing Management. The internal governance team should have a transformation or innovation owner, sufficient staff & budget to help drive innovation and must hold the provider accountable for innovation. Reassure and demonstrate to the provider that the relationship is long-term; otherwise they will be inclined to disinvest in innovation and the relationship. Your organization must retain process management expertise at a level at which you can clearly articulate future state requirements, evaluate proposals brought forward by the service provider, and work with your organization to get the business case for change. Executive Visibility / Support. Senior executives from the service provider side must have high visibility and access. This includes steering committees, reciprocal headquarter visits, joint speaking engagements, regularly scheduled calls, quarterly and annual briefings. Behaviour/Communication/Culture. Be prepared to invest in and encourage business process transformations that are aligned to business goals - rather early in any outsourcing relationship. Transformation requires a partnership mindset, not a transactional orientation. Innovation is often not brought to bear because clients do not ask for it, define what they mean by it, and motivate the provider to deliver it, or put restrictions around it. Clients rarely help the provider to understand what is important to them. Consultative BPOOutsourcing has now scaled the maturity milestone globally and hence is increasingly consultative in nature rather than being mere business vendors. Outsourcing relationships now proactively meet business challenges as specialist BPO vendors invest to stay ahead of the learning curve. Outsourcing is often regarded as a change catalyst and hence clients are increasing using outsourcing initiatives in their growth strategies/ employee career planning initiatives. Joint client-service provider partnering is key to this new consultative approach where both invest in transformations and not just fund reactive process management.