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Digg it UP - How to Know When to Change Air-Conditioning Filters?
Every sports fan knows the story of a sports team competitively peaking at the right time on the road to winning a championship. The Pittsburgh Steelers won the 2006 Super Bowl even though they only had the second best record in their division. In addition, they had to overcome the huge hurdle of playing three straight playoff games on the road in front of hostile crowds. Entering the tournament, the Steelers were not favorites to win a champi
Changes in efficiency of the filter
This is particularly important in low efficiency filters. Their efficiencies can be radically impaired as a result of high final pressure losses. Particles that have been collected by the filter can be
The dilemma that most HR managers face, is that their staff want cash as bonuses and not gifts or gift vouchers. But why is this a dilemma?Well it has long been established that companies need to give their staff not necessarily what they want, but what they need. This way companies can start to reap the reward of giving rewards by getting their staff churn down, and by their sales /service increasing.How many of us have
Removing dust is usually done by installing filters in the incoming air stream or the circulating air stream. In air-conditioning systems, these filters are installed at the air handling units or AHU's.
How do we know when to replace the filters?
As more and more dust accumulates at the filters, the differential pressures between the inlet and the outlet will increase. By measuring the differential pressures, we will have a very good indication of how much the filter has been choked by dusts. Persons maintaining the air-conditioning plant should know at what differential a filter should be replaced. Some of the dust particles are so minute, that they cannot be seen by the naked eye. In all appearances, the filter looks as good as new.
These are some factors to consider when determining when to change the filter:
Mechanical strength of the filter
The final pressure of a filter is usually stated in the product. That is the strength of the filtration medium. However, other factors need to be considered - the strength of the filter walls, frames and holders if not adequately designed can result in the sagging of the filter housing that will result in leaks.
Changes in efficiency of the filter
This is particularly important in low efficiency filters. Their efficiencies can be radically impaired as a result of high final pressure losses. Particles that have been collected by the filter can bec
Of all the media choices available to advertisers, intrusive media has been proven in multiple national market tests to be the most effective method for brand creation.What exactly is intrusive media? I like to think of it as outbound promotion.In essence, this form of advertising involves delivery methods that are actively inserted into a prospect’s environment. Unlike passive media elements like search engine listings and yello
How do we know when to replace the filters?
As more and more dust accumulates at the filters, the differential pressures between the inlet and the outlet will increase. By measuring the differential pressures, we will have a very good indication of how much the filter has been choked by dusts. Persons maintaining the air-conditioning plant should know at what differential a filter should be replaced. Some of the dust particles are so minute, that they cannot be seen by the naked eye. In all appearances, the filter looks as good as new.
These are some factors to consider when determining when to change the filter:
Mechanical strength of the filter
The final pressure of a filter is usually stated in the product. That is the strength of the filtration medium. However, other factors need to be considered - the strength of the filter walls, frames and holders if not adequately designed can result in the sagging of the filter housing that will result in leaks.
Changes in efficiency of the filter
This is particularly important in low efficiency filters. Their efficiencies can be radically impaired as a result of high final pressure losses. Particles that have been collected by the filter can be
Dubai is home to an exciting, diverse, multi-cultural blend of young, dynamic and professional people all enjoying the unrivalled quality of life the Emirate has to offer. It is of absolutely no surprise therefore that Dubai has the fastest growing population in the world.More and more people emigrate to the city for quality of life, outstanding employment prospects and to experience the very best in the world of work and lifestyle.ery good indication of how much the filter has been choked by dusts. Persons maintaining the air-conditioning plant should know at what differential a filter should be replaced. Some of the dust particles are so minute, that they cannot be seen by the naked eye. In all appearances, the filter looks as good as new.
These are some factors to consider when determining when to change the filter:
Mechanical strength of the filter
The final pressure of a filter is usually stated in the product. That is the strength of the filtration medium. However, other factors need to be considered - the strength of the filter walls, frames and holders if not adequately designed can result in the sagging of the filter housing that will result in leaks.
Changes in efficiency of the filter
This is particularly important in low efficiency filters. Their efficiencies can be radically impaired as a result of high final pressure losses. Particles that have been collected by the filter can be
Are you looking at online fundraising ideas for your charitable organization? Let's face it, there's money to be made on the internet. So how can your organization benefit? Here are four simple ways to fundraise online: Hold eBay auctions and have your organization listed as the benefactor. eBay calls it the "Giving Works" program. Your organization must first list with "MissionFish" through eBay. Then once you're setup, have yo
Mechanical strength of the filter
The final pressure of a filter is usually stated in the product. That is the strength of the filtration medium. However, other factors need to be considered - the strength of the filter walls, frames and holders if not adequately designed can result in the sagging of the filter housing that will result in leaks.
Changes in efficiency of the filter
This is particularly important in low efficiency filters. Their efficiencies can be radically impaired as a result of high final pressure losses. Particles that have been collected by the filter can be
This is a really cranky article, but someone has to write it!Why do business owners continue to invest in automated phone mazes when we all know everyone hates them? Mom and Pop or multi-billion dollar company, growth is dependant on customer satisfaction. (…unless you have a monopoly)It is beyond belief that as many times as we all have hung up on automated phone service, that business owners still think it is better to have a m
Changes in efficiency of the filter
This is particularly important in low efficiency filters. Their efficiencies can be radically impaired as a result of high final pressure losses. Particles that have been collected by the filter can become detached and accompany the air stream. Fibrous particles are less likely to become detached compared to granular particles. Because of this, higher final pressure drops are permissible for the former, although this should not exceed about 200 Pa in a pre-filter.
With granular particles, the final pressure loss should not be allowed to exceed 100 to 150 Pa.
Fine filters and HEPA filters are less sensitive to changes in quality. In principle, they can be allowed to have a final pressure loss up to the limit of their mechanical strength.
Permissible Air flow variations in the system
In this case, the flow pattern is more important than the particles carried along the air stream. The permissible final pressure loss here will depend on the total pressure and characteristics of the fan and any other control facilities.
The filter will affect the air flow as a result of dust accumulation. The filter has to be changed when the velocity of the air in a laminar flow installation cannot be maintained or has fallen below the required specifications.
Bacteriological reasons
Sometimes, the filters are replaced at regular intervals instead of pre-defined pressure loss indications. This is to prevent accumulation of bacteria and other microorganisms.
Suitable time window periods
Fil
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