Combined Heat-Power

Author: Franco Zinzi
Source: ezinearticles.com

Another method to save energy dollars is to recapture and reuse heat that would otherwise be wasted. This is known as combined heat-power (CHP), heat recovery, heat reclamation, or cogeneration (the latter because it utilizes the same energy for two jobs). Waste heat can also be recaptured from HVAC systems, refrigeration compressors, and computers, and also the idea is adaptable sufficient that:

Hot exhaust air can warm incoming cold air.
Warm exhaust air can warm water. Hot refrigerant can warm air or another liquid.
Warm from a boiler could be accustomed to make steam or to heat air or drinking water.

The trend in CHP is toward clean, quiet, reliable microturbine generators that don’t require any special kinds of permits to install and generate no environment-damaging emissions. Both gas and electric utility companies have done extensive investigation on cogeneration. The Gas Investigation Institute conducted a study of utilities for 1000 restaurants in 28 U.S. cities, suggesting a cogeneration program in each case.

This specific system, which impacted both gas and electric appliances in the restaurant, cost $128,000 to install. However, the average utility price savings was an impressive $22,000 per year, meaning the system would pay for itself within five or six years. Another analyze was conducted by the Electric Power Investigation Institute in conjunction with Pennsylvania State University.

Reuse possibilities in four kinds of restaurants (cafeteria, full menu, fast food, and pizzeria) were assessed in cities having a variety of climate conditions, and also the study revealed that every of the following technologies reduced power consumption by at least 10 (and as much as 25) percent.

Reuse of Dining Room Air for Kitchen Ventilation:
Since dining room air is already conditioned, it could be used to meet hood ventilation requirements above the hot line. This reduces the amount of (naturally hotter) kitchen area air that should be conditioned. Air can be transferred in the dining region to the kitchen utilizing a single-duct system or transfer grills. After use in the exhaust hood, the heated air can even be used to preheat incoming makeup air. However, the cost of this technique makes it feasible only in restaurants that use the largest amounts of hood ventilation air.

Warm Pump Water Heaters:
A warm pump is a mechanical device that moves warm from 1 region to an additional. In all restaurant types, this was cited as an efficient way to use less energy to warm water. An additional advantage of warm pump drinking water heaters is the cool air in the evaporator, which can be routed to spot-cool the hottest areas from the kitchen. The heat pump contains an evaporator, a compressor, a condenser, and an expansion valve.

Rather than cooling, nevertheless, the warm pump recovers heat from an region and uses it to warm drinking water. The location of a warm pump water heater is important. To perform at its best, It ought to be in a space where the ambient temperature is between 45 and 95 degrees Fahrenheit. If operating correctly, and if its air intake filters are kept clean, this handy appliance is capable of producing 30 to 70 percent of the hot water needs of an typical restaurant.

Recovery of Refrigerator Warm: Hot air released by refrigerators and walk-ins could be used to warm water. Nevertheless, because refrigerators and walk-ins run 24 hours a day, storage is essential to retain the warm during the hours when there’s no demand for warm drinking water. This is feasible with a two-tank program that consists of the preheating tank that keeps drinking water warm using air in the refrigerator, then feeds it into a conventional water heater tank, which does not use as a lot power simply because it doesn’t have to perform as hard. A side advantage of this system is that in warm months, the building’s HVAC program does not have to work so tough to cool the space either. The warm is getting captured and used for other purposes.

HVAC Warm Recovery:
When the restaurant is being cooled (air conditioned), the heat from the cooling process could be captured to heat drinking water elsewhere in the building. Usually, a lot more heat is generated than required, so correctly sizing the storage tank is critical to the success of this technique. This technique also utilizes a two-tank system similar to the one just discussed.

Online and in foodservice trade magazines, you will find plenty of examples of restaurants which are using “cogen” successfully.

Franco Zinzi has been involved with online marketing for nearly 3 years and likes to write on various subjects. Come visit his latest website which discusses of Restaurant Fridges and fridges supplies for the owner of his own business.

Polar Bear to Install Air-Conditioning

Author: Wayde Delafield
Source: ezinearticles.com

“Polar bear to use sunscreen” or “Polar bears set to install air conditioning in Antarctica” would be great liberal propaganda headlines for their latest scare tactics. Actually, global warming is a hoax, according to 650 esteemed climatologists that recently met at a United Nations conference. Their assertions are that we could be facing the next great ice age. This certainly flies in the face of the hysterical and shrill rhetoric from the left that earth is doomed because of man’s utter disregard for the planet. Moreover, the founder of the Weather Station stated that the global warming alarmists are perpetuating one of the most significant lies of our lifetime tht is devoid of any irrefutable or tangible evidence. If global warming is such as imminent threat then why has the planet been experiencing global cooling for the past decade? Additionally, the hottest decade on record was in the 1930′s, according to NASA research. Meanwhile, the limousine liberal elites illustrate their hypocrisy in stunning technicolor as they arrogantly criss cross the globe in carbon guzzling private jets, coupled with living in the most opulent energy consuming mansions. Why don’t these scientists that make a living by being pro-global warming alarmists, while scaring little children debate scientists on the other side too?

I’m confident that the polar bears will be just dandy, unlike the dozens of people who died in this country from a harsh winter. Parts of the Midle East had snow this year for the first time in history and many countries received rare winter wonderlands. I don’t think the world is in imminent danger, unless freezing to death is our concern. It’s pretty vain to think that man could destroy God’s creation as we are like atoms or ants (but, not Atom Ant) compared to the awesomeness of the Father. Why should we listen to bureaucrats that absurdly think that they can set the thermostat for the world? It stands to reason that more food could be produced if the temperature did increase in an array of countires around the big blue beautiful earth too. But, it is arrogant and vain to think that we can have any impact on weather. More people die from exposure to the extreme cold weather than oppressive hot temperatures. A University of California Berkeley study found that 14,380 Americans died from cold weather in 2007. They found that “Deaths linked to extreme cold account for 0.8% of the nations annual death rate and outnumber those attributed to leukemia, murder and chronic liver disease combined”. And, the research illustrated people who live in warmer climates live longer than those in colder weather regions which “delay an estimated 4.600 deaths a year.

The goal of these bureaucrats with this “Chicken little sky is falling” mentality is to enrich themselves with this nonsense, while fleecing the taxpayers of the United States of America. The Democrats will take this to the next level as they will exponentially increase the price of gasoline, home heating, air conditioning when we can least afford these extra expenses during an economic recession. I affectionately call Cap & Trade the “Tax and Gouge” plan! In predictable fashion, the Democrats have been “Pinnochioesque” once again as they have gone back on their promises to drill for more oil in our own country after President Bush lifted the moratorium on offshore drilling. The Democrats are either ignorant of the fact that the country runs on oil or they are more concerned with socializing all sectors of industry, which will be catastrophic to our way of life. Never mind that hundreds of household products have petroleum based ingredients in them. Our national security is at grave risk if we continue to be dependent upon some of America’s enemies for oil when we have enough oil inour owncountry for decades. Unfortunately, the Democrats have blocked efforts for us to finally become energy independent. When we are paying $4.00 a gallon again please remember that the Democrats are responsible for the legalized theft from your respective families. Clearly, politicians and left-wing groups that want us to dial back our standard of living while booking private jets and pretending that their Jimmy Johnson (NASCAR) gunning for a Daytona 500 win have no room to condemn anybody.

The best meteorologists rarely can predict the temperatures correctly for 5 to 10 days. God made this planet and man couldn’t destroy God’s creation if he wanted to. The exception is an all out nuclear war, but only man would be extinct and the world would regenerate.

The bottom line is that the clueless bureaucrats think that they know more than scientists and climatologists. They assert that the debate is over and those who don’t go along are “Global Warming deniers”, but the real evidence is to the contrary. It is just another power grab by leftists politicians who want to attack Capitalism. The temperature has gone up less than a half of a degree in the last 100 years, which seems irrelevant. Plus, the temperatures have actually decreased in the last decade. If you get a chance, an excellent report was turned in by Dr. Tim Ball and Tom Harris on canadafreepress.com called “US hookwinked into draconian climate policies. Europe is already pushing back against their socialized governments who exploited the climate change myth that was allegedly caused by man. The citizens are protesting against these painful taxes as the supposed evidence is being debunked. Now the United States of America is heading in the opposite direction, as the Democrats are getting ready to hit us with their best Spiderman impression glomming onto our wallets and purses with deft precision.

By: Wayde Delafield

http://www.conservativegalaxy.com

Air Conditioning – Increases Productivity And Profits

Author: Pearl Deloria
Source: isnare.com

Mnay companies are thinking about the cost of installing air conditioning units in their premises. A commercial enterprise needs to be able to justify any investment in terms of the increase in profits it will bring. Can this cost be justified in term sof increased profits?

People do not work at their most efficient if they are too hot or the air is too humid. This is the reason that most companies install air conditioning units, at least in their offices. Company planners and decision makers work in offices, so mistakes made here, because an individual is too hot, can be very expensive indeed.

In a production environment quality control is improved by the use of air conditioning to maintain an appropriate environment. If quality control improves, profits improve, so again, the investment pays for itself.

You need to consult an air conditioning company in order to determine exactly what kind of units you require. It is not simply a matter of cooling the air, there are other factors to consider, too.

When air is cooled, any moisture in it is normally removed. This leads to the common complaint that air conditioning causes dehydration. A poorly designed system will. The air is dryer, so workers lose more water through sweat, even at lower temperatures. If your workforce are dehydrated they will perform below expectations. Research shows that performance at any task, mental or physical drops off very quickly as we become even 10% dehydrated.

It is not a wise decision to buy an off the shelf unit, especially if you have concerns over dry air. You may also be purchasing a less efficient model, or one with too high or low a cooling capacity for your needs. Always consult a specialist engineering company, who will specify, design and install the correct air conditioning system for your needs.

Changes to Air Conditioning Legislation for Companies in Milton Keynes

Author: Jenny Pilley
Source: articlesbase.com

Do you own or operate air conditioning or cooling equipment containing HCFC refrigerants? Are you aware of your new legal obligations under EU F Gas Regulations? Take advice from an air conditioning specialist to give your business a head start before the next phase of legislation comes into effect on 1st January 2010. ÂHCFC’s (such as the commonly used R22) are being phased out and from 1st January 2010 the sale and use of newly produced HCFC refrigerants will be illegal in the maintenance and servicing of air conditioning and cooling equipment. Recycled or recovered HCFC’s may be used until 31 December 1014 but this is a short term option with likely reduced availability and higher costs becoming an issue as the deadline approaches.If you own or operate an air-conditioning system it is your responsibility to comply with the new regulations and all air-conditioning systems are affected. Operators must take precautionary measures to prevent and repair leaks and use appropriately qualified personnel to carry out installation, servicing & maintenance, and leakage checks. Companies who do not comply may face penalties.In the current economic climate, business’s are especially cost conscious. Financial benefits of an air conditioning upgrade include:•Â Âthe Government’s ECA Scheme (tax relief on certain new equipment)•Â Ânew equipment is likely to be more efficient and cheaper to run•Â ÂUp to 5 years warranty on new equipment•Â Âsignificantly reduce CO2 emissions and your Company’s carbon footprint•Â Âavoidance of non-compliance penaltiesThere are specialist, professional, air conditioning Milton Keynes providers. We can provide assessments and suggest effective solutions to enable companies to comply with their obligations under the new legislation. Take a look at our web site which has information about our specialist air conditioning services and information to raise awareness of the impending phase out.

Written by Jenny Pilley, Content Writer for Creare, Web Design specialists.