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Cooled Spot
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 Mallory 5/8" Electrode Holder-Water Cooled Spot Welding  US $225.00
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Small is beautiful and convenient and so is the portable air conditioner as it can be shifted from one place to the other very easily. Read on to find out all the other advantages.
With the onset of the damp weather, it becomes difficult to survive without constant central air conditioning but that can prove to be quite expensive. The answer to this problem is a portable air conditioner as it has many advantages. It is easy to shift from one place in the home to another and that makes a portable air conditioner the ideal cooling system solution for your home, office or industrial site.
The portable air conditioners are easy and quick to install, as they do not involve any lifting or tearing up of windowsills. Moreover it can be shifted very easily from one place in the home to the other. For taking care of the hot spots in the central air conditioning, the portable air conditioners are far more convenient than window air conditioners. It is also ideal for window shapes, which present problems for installation. There is nothing like portable air conditioners for use as a spot cooler in the home.
A portable air conditioner is an excellent choice for saving money as just one unit needs to be purchased and it can be shifted easily to where you need it as it is mounted on castors and some can weigh only about 36 pounds. Moreover, as only one room is cooled at a time instead of the whole house, the total energy consumption is very low as compared to other air conditioning systems.
Another advantage of portable air conditioners is the energy efficiency that they provide. The average efficiency is in the 8 to 10 range although some are as high as 15, which is 50 percent better than most older central air conditioners. The small size of the portable air conditioners is very advantageous and as such it can fit in a corner or against a wall. It functions like an effective dehumidifier if you do not vent the warm exhaust air out through a window and its size is also the same as that of a room dehumidifier.
In order to reduce humidity and allergies, even the small ones remove 35 pints of moisture per day from the room air. The portable air conditioners also use the heat-exchange principle as the other air conditioners to cool and dehumidify the air. The operating principle is also similar to a window air conditioner as the room air circulates over cold evaporator coils to cool and dehumidify it inside the unit. The room air is exhausted outdoor after flowing over the hot condenser. There is no chance of already-cooled indoor air escaping outside as two ducts are now used.
Nowadays, you have electronic controls in most models and you can set the desired room temperature, blower speed, start and stop timer, and operation mode (cool, dehumidify, heat). The portable air conditioners also have hand-held remote control with which you can conveniently change all the settings as per your need.
The other features of portable air conditioners include a built-in air cleaner with an optional charcoal filter and oscillating louvers to distribute the cool air throughout the room. You can also switch off the louvers to direct the flow of air towards yourself, if you so desire.
Get the right air conditioner the first time. Discover the advantages of different air conditioner models and which one best suits your needs by reading our free articles at: Air Conditioner Reviews [http://www.nichearticles.com/airconditioner/]
Beat the Heat—effective Cooling Strategies for Today’s Datacenters
Datacenter cooling is the main concern for many datacenter managers. Excess heat in a server room adversely affects equipment performance, shortens its lifespan, and leads to a premature end of life for equipment. Keeping a server room at the recommended 68 ° to 77 ° F (1) is not an easy task. There are many factors that make cooling today’s datacenters a significant challenge, including high-density computing clusters and rapid changes in technology.
High-Density Computing Clusters
The rise in the use of blade servers and virtual servers has greatly increased the potential amount of power consumed per rack, as well as the resulting heat output. While the heat dissipated by a 2 ft by 2.5 ft rack is currently about 10 kilowatts or more, experts estimate that designs for future equipment will require dissipations of 30-50 kW in the same rack space.(2) The trend toward increased power consumption has been documented in several studies, including one recent five-year study of 19 computer rooms that showed that power consumption rose by 39% from 1999-2005.(3)
Changes in Technology
Traditionally, advances in technology have occurred at an extremely rapid rate, as illustrated by “Moore's Law,” which predicts the doubling of semiconductor performance approximately every 24 months. Historically, increased computational abilities have led to increased power consumption and heat loads. Datacenter managers should take these trends into account when planning for future expansion. According to Gartner Research, "Without careful planning and coordination between the data center facilities staff and the server procurement staff, data centers will not be able to increase power or cooling in line with increases in server deployments…through year-end 2008, heat and cooling requirements for servers will prevent 90 percent of enterprise data centers from achieving the maximum theoretical server density." (4)
Isolating Hot Spots
Hot Spots are areas in a datacenter that are not properly cooled, often resulting in temperatures that exceed recommend conditions for maximum equipment reliability and performance. Hot spots are not necessarily caused by a lack of cooling capacity and commonly occur in datacenters with sufficient or excess cooling capacity, but can be caused by poor circulation or improper air flow.
Zone Hot Spots can be present over fairly large areas in a datacenter and occur when the temperature at all air intake levels of a rack or cabinet are too hot, due to expelled air flow that is not properly routed.
Vertical Hot Spots occur over a small area and often affect a single server rack. They occur when equipment at the bottom of a rack consumes the available supply of cold air and devices higher up in the rack pull in the hot air exhaust of adjacent equipment or ambient air.
Strategies to Improve Datacenter Cooling
Datacenter managers can take several steps to meet datacenter cooling challenges, including choosing the right rack, increasing datacenter energy efficiency, using liquid cooling units, and taking advantage of environmental monitoring.
1. Select The Right Rack And Accessories
To fully maximize equipment cooling, when selecting a server rack consider intelligent and space-efficient design features that various rack models offer, including frame profile and capacity for increased packing density. Use blanking panels to manage air flow efficiency and select a rack with built-in channels for better cable management and improved air flow. Fully perforated doors and top panels can help improve ventilation as well. Also consider server rack accessories that will improve cooling, including fans, enclosure blowers, and rack air conditioners. In addition, consider using energy-efficient power supplies, such as 220V power, which significantly increases available amperage into the server rack, using fewer circuits while providing a more balanced power load. This can reduce the overall number of PDUs needed to power equipment, leaving more space for airflow.
2. Aim for Energy Efficiency
There are several steps you can take to reduce overall energy consumption and resulting heat loads in your data center. To begin with, consider hiring an expert to conduct room diagnostics, measure airflow, and correct any cooling problems identified. Next, conduct a thorough audit of your equipment and determine if any servers can be consolidated or discarded—this process can cut power consumption in some organizations by up to 30%. (5) Finally, clean up any clutter under your datacenter floor, including cabling, that might be impeding air flow.
3. Deploy Liquid Cooling Units
As power-intensive applications and server densities have increased, Liquid Cooling Packages (LCPs) have become a valuable alternative to ambient air cooling and can better meet the cooling challenges presented by high-density computing clusters. These modular, temperature-neutral high-density cooling solutions utilize air/water heat exchangers to provide uniform, effective cooling. Liquid cooling units use a special horizontal airflow with constant-temperature cold air provided at the front intake and hot air removed from the rear of the enclosure. They can be mounted at the rack base, in a rack “side car.” Fully-loaded LCPs have a 30kW cooling output with three cooling modules possible per equipment rack, and controlled variable speed fan and water flow based on actual heat load generated in a cabinet.
4. Use Environmental Monitoring
These devices allow administrators to proactively monitor rack and server room temperature, including hot spots, at any time and from anywhere and provide protection to mission-critical applications. They also allow administrators to continuously monitor amperage draw per circuit, water leaks, and physical security and can send alerts automatically via SMTP/SMS/SNMP when conditions exceed established thresholds. This allows IT managers to quickly respond to any irregularities before they become larger problems. Environmental monitoring devices also help administrators in future planning, as they provide valuable data that can be used for trending analysis.
When considering datacenter management, cooling is only one piece of the puzzle. Other key considerations include intelligent power management and KVM console management tools. The team at 42U specializes in assessing needs, creating solutions, and supporting our clients, to ensure that IT professionals maximize their use of current technologies to improve overall business performance.
About the Author
42U’s team of technology specialists provide unbiased, independent expertise and solutions for Data Center infrastructure. They provide best practices and products for Data Center builds, expansions, and consolidations. For thirteen years, the majority of Fortune 500 companies have engaged the 42U team to resolve their data center management challenges. 42U (http://www.42u.com) and its sister companies, are value-added resellers that provide expert independence advice and solutions around enterprise kvm switches, remote power, computer room power and cooling , server racks and green data center solutions.
Any piercing suggestions? The coolest spot for a piercing?
I wanna get a piercing somewhere besides my ears - my bf is coming home in a a few weeks and I wanna surprise him.
What's the coolest spot, in your opinion, to get a piercing - and how long does it take to heal? Thanks!
Well i really like the belly button and think its cute pierced! I have it done and i got it done last summer and its just really cute! It takes about 3 months to fully heal to wear it wouldnt hurt if you accidently pulled it or what not. Plus i have a lot of piecrings on my ears and they are also cute! =]
NCAA: Half of Final Four is set; who's next?
Half of the Final Four is set, and anybody who predicted it could be making a fortune.
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