August 21, 2014 at 1:19 am Comments (0)
Today people depend on heating and cooling system (also known as the HVAC system) very much. Whether during cold winter nights or sweltering summer days HVAC is the technology which can make our life more comfortable and pleasant. So we depend on it at every step – being at home, at work, driving an auto.
Nearly half of a home’s total energy expenses go towards heating and cooling. That’s not surprising, especially I you’re living there where outdoor temperatures are either too cold or too hot most of the time to even think about keeping the windows open.
High efficiency, low heating and cooling costs
According to the U.S. Dept. of Energy, an older furnace or boiler operates with an efficiency of 56% – 70%. A new, high-efficiency furnace can operate at 96% efficiency. Depending on the cost of fuel and electricity, an upgrade to a high-efficient HVAC system can pay for itself in just a few years.
HVAC systems are classified as either self-contained unit packages or as central systems. Unit package describes a single unit that converts a primary energy source (electricity or gas) and
provides final heating and cooling to the space to be conditioned. Examples of self-contained unit packages are rooftop HVAC systems, air conditioning units for rooms, and air-to-air heat pumps.
With central systems, the primary conversion from fuel such as gas or electricity takes place in a central location, with some form of thermal energy distributed throughout the building or facility. Central systems are a combination of central supply subsystem and multiple end use subsystems. There are many variations of combined central supply and end use zone systems. The most
frequently used combination is central hot and chilled water distributed to multiple fan systems. The fan systems use water-to-air heat exchangers called coils to provide hot and/or cold air for the controlled spaces. End-use subsystems can be fan systems or terminal units. If the end use subsystems are fan systems, they can be single or multiple zone type.
Once the ideal comfort conditions for a building have been identified, good controls can help maintain these conditions.
August 21, 2014 at 12:45 am Comments (0)
A new solar “mega-trap” in the middle of California’s Mojave Desert is not so green as we thoight, because it is killing the avian lot at a rate of up to one bird every two minutes, according to the U.S. Fish and Wildlife Service (USFWS).
The state-of-the-art Ivanpah Solar Electric Generating System (ISEGS), which opened in February, is the world’s largest solar plant to utilize “power towers”. It contains of the $2.2 billion plant, which launched in February, is at Ivanpah Dry Lake near the California-Nevada border. More than 300,000 mirrors reflect solar rays onto three boiler towers up to 40 stories high.
Water inside is heated to produce steam, which turns turbines that generate enough electricity for 140,000 homes. The new plant would have towers up to 75 stories high. Federal wildlife officials said Ivanpah’s bright light might be attracting insects, which in turn attract insect-eating birds. But Ivanpah officials say at least some of the puffs of smoke mark insects and bits of airborne trash being ignited.
Ecology is one of the most important things people have to keep and in the light of this problem searching a new way of getting energy for future power generation. According to BBC a Japanese electronics firm has shown off a vibration-harvesting generator that could replace standard batteries. “It’s great because they will work OK in a low-power application for AA batteries that one can shake without breaking; a remote control, for example,” Carl Telford an analyst at electronics business consultants Strategic Business Insights told.
“Of its size, it is small, compact, and directly compatible with existing power sources. Brother says that it can produce enough power at reasonably low frequencies, around 4-8Hz – this is impressive.
“Walking with a device in your pocket would vibrate with a frequency of around 2Hz. You’d need to shake the remote quite briskly, but it would work.”
There are no plans to commercialise the batteries as yet. “Currently the cells are still in the trial phase and so far we do not have a clear business plan for this item. However, we will continue to monitor the market to make a business plan when needed.”
June 7, 2014 at 2:12 pm Comments (0)
The climate is changed and a lot of things related to that is inevitable and must be considered by governments right now to take a number of steps to limit emissions and save water.
You know, many years ago I had read in some of newspapers that in future people have to buy clear water, packed in bottle in a shop then I remember that I could not imagine how it can be at all!
So now we have what we have – we buy clear water in a store, we have the changed climate, changed world and the most important the clear watet which is one of the based staff of life is a truly biggest world’s problem today. As you know, no water, no life. It is essential for all dimensions of life., it’s not necessary to life, but rather life itself. Every scholar knows that whater is H2O, hydrogen two parts, oxygen one, but actually nobody knows what that is.
Why am I writing about again and again? Because the facts are still unconsoling:
1.1 billion people don’t have safe water and 2.6 billion lack basic sanitation.
Source: Human Development Report
Dirty water and poor sanitation account for the vast majority of 1.8 million child deaths each year from diarrhea – almost 5,000 every day – making it the second largest cause of child mortality.
We have to adopt to the new reality.
December 17, 2013 at 3:37 pm Comments (0)
Green gardering advices
Interesting and looking for green gardering advices I’ve found 250 Tips for an Eco Lifestyle book FROM the Little Green Book series where I found answers on most of my quastions. If you want to learn how to make choices that affect not only your own life but the planet as a whole, this is for you. The Little Green Book of Gardening contains 250 tips on such subjects as organic growing, lawn care, wildlife gardening, gardening power and products, water and garden waste. Theres great advice on everything from the ins and outs of watering your lawn and digging your garden green to making your own compost and practising green pest control. Be sure you can buy tthi useful book online, on barnesandnoble.com right now for $10 only.
Environmentally friendly solutions
Here is some of cost-efficient and environmentally friendly solutions for eco-gardening and large-scale landscaping projects, offered by the Environmental Protection Agency.
Make your garden a place for good conservation and environmental savings, getting economic at the same time. If yard waste is managed properly, a garden environment can not be enhanced but also help you save money.
Use shredded untreated wood and leaf wastes converted into chips as mulch on garden beds. This would help prevent weed growth, retain moisture, regulate soil temperature, and add nutrients back to the soil
You can use recycled materials – like wood scraps and cardboard – for building a backyard fort or tree-house for your children, giving them an eco-friendly atmosphere.
Purchase recycled-content gardening equipment and tools. Some fo such equipments are like,
– garden hoses made from old tires.
– stepping stones made from old glass bottles.
– hand tools made with recycled plastic.
– plastic lumber made from recycled plastic bottles and bags — to make flower beds, trellises, decks and birdhouses.
Recycle used oil and tires from lawn and garden equipment.
Maintain your lawn mower and other gardening equipment regularly. Always keep them in efficient operating condition. When refilling your lawn mower, use a nozzle that prevents fuel spills and get wasted unused. To save fuel and protect the air quality, use manual tools.
Don’t bag the grass clippings; leave them on your lawn instead. You can also use a mulching mower. The clippings will return nutrients to the soil rather than take up space in landfills.
Protect young seedlings
Protect young seedlings from frost, wind, heavy rain, and roving animals by reusing plastic milk jugs, just by cutting the bottoms off, or else use small paper bags for the purpose. And, once the seedlings have grown, recycle the bags and jugs for sure.
Donate healthy plants to community gardens or schools, or gift them to neighbors.
Introduce ladybugs as they will eat aphids.
Plant marigolds to ward off beetles.
Look for quick-sprouting plants that help block weed growth.30647
November 29, 2013 at 8:29 pm Comments (0)
You know what happend in Chilie recently. It was an earthquake, the magnitude 8.5 earthquake on this Saturday, 50 times stronger than Haiti’s, expert say. It’s awful, but now I want to talk about what to do if it happend?
Stay as safe as possible during an earthquake. Be aware that some earthquakes are actually foreshocks and a larger earthquake might occur. Minimize your movements to a few steps to a nearby safe place and stay indoors until the shaking has stopped and you are sure exiting is safe.
DROP to the ground; take COVER by getting under a sturdy table or other piece of furniture; and HOLD ON on until the shaking stops. If there isn’t a table or desk near you, cover your face and head with your arms and crouch in an inside corner of the building.
Stay away from glass, windows, outside doors and walls, and anything that could fall, such as lighting fixtures or furniture.
Stay in bed if you are there when the earthquake strikes. Hold on and protect your head with a pillow, unless you are under a heavy light fixture that could fall. In that case, move to the nearest safe place.
Use a doorway for shelter only if it is in close proximity to you and if you know it is a strongly supported, loadbearing doorway.
Stay inside until shaking stops and it is safe to go outside. Research has shown that most injuries occur when people inside buildings attempt to move to a different location inside the building or try to leave.
Be aware that the electricity may go out or the sprinkler systems or fire alarms may turn on.
DO NOT use the elevators
Move away from buildings, streetlights, and utility wires.
Once in the open, stay there until the shaking stops. The greatest danger exists directly outside buildings, at exits, and alongside exterior walls. Many of the 120 fatalities from the 1933 Long Beach earthquake occurred when people ran outside of buildings only to be killed by falling debris from collapsing walls. Ground movement during an earthquake is seldom the direct cause of death or injury. Most earthquake-related casualties result from collapsing walls, flying glass, and falling objects.
If in a moving vehicle
Stop as quickly as safety permits and stay in the vehicle. Avoid stopping near or under buildings, trees, overpasses, and utility wires.
Proceed cautiously once the earthquake has stopped. Avoid roads, bridges, or ramps that might have been damaged by the earthquake.
If trapped under debris
Do not light a match.
Do not move about or kick up dust.
Cover your mouth with a handkerchief or clothing.
Tap on a pipe or wall so rescuers can locate you. Use a whistle if one is available. Shout only as a last resort. Shouting can cause you to inhale dangerous amounts of dust.
September 8, 2013 at 1:11 pm Comments (0)
Someone said that the greatest gift of the garden is the restoration of the five senses and that’s very truth. What is the place might be better in any season than your garden. It’s the place for sentiment, thoughts and dreams.
The thoughts grow there as freely as the flowers, and the dreams are as beautiful. It’s all right, but… there is nothing grows there without doing work -from planning a garden through harvest, for all types of gardens.
If you try to keep your backyard eco-friendly it helps eco global living, then you do a great deal. Besides that gardening has many advantages, first of all it can be a great workout. There is nothing like a day spent outdoors, it has certain healthy phisical and psychological benefits. The greatest gift of the garden is the restoration of the five senses.
September 8, 2013 at 1:08 pm Comments (0)
In this modern world of technology, we need energy in different forms to do our work easily. We need these energy resources to produce electricity, to fuel our cars and for almost every type of work. There are two major sources of energy. One is renewable and other is non renewable. Non Renewable resources of energy are oil, gas, coal etc and renewable energy resources include wave power, solar energy, wind power etc. our non renewable resources of energy are getting less day by day, due to which it has become important for us, to find out ways for using renewable resources in an efficient way.
In recent years, much of the research has been done to use solar energy for different purposes. In this we basically use sunlight as a source of energy. This energy can be used to produce electricity, to run our cars and for many other purposes. This is very cheap except for the initial investment and everyone can use it. Nowadays car companies are designing cars that make use of the solar energy rather than petrol or gas. These cars are also good for environment as they do not create any pollution. The energy from sunlight can also be used to make saline water potable. It can also be used in heating, cooling and ventilation technologies.
The people are now using solar energy to produce electricity for their homes or offices. Solar energy advantages are that, it is cheap as you don’t have to pay for sunlight but the initial investment is little bit expensive. The best part is you don’t have to pay big bills for electricity. It is also good for people who live in countries where there is shortage of electricity and they have to face problems like load shedding.
The first thing that you will have to do in order to generate electricity through sunlight is to buy solar panels. This is a device that collects the solar radiations from sun and converts it into electrical energy. It is composed of several individual solar cells. The output of electricity from the solar panel depends on the quality and the quantity of solar cells used. They work in the same manner as large semiconductors.
Many solar energy companies are now working to use this renewable form of energy in an efficient way and to make it available to everyone.
September 8, 2013 at 12:38 pm Comments (0)
In our everyday life we use an enormous amount of water – except for drinking it, we use it to clean ourselves and our belongings, to water the plants and in general, to make life better. But this excessive use of the possibly most important element on earth is dangerous for us and our planet.
“Our home – our planet” is a website that provides you with all the necessary knowledge about how to save water. Among other things, you can find on the website a water calculator: a great way to find out how much water and energy you can save without compromising your way of life. You can learn many interesting facts and tips that can help you realize that small changes will change everything!
Also, the website has a whole section with water games. This will allow you to involve your kids in the matter of conserving water in a fun and educational way!
So don’t waste another minute! Go on the website and find out how you can protect you planet!
September 8, 2013 at 12:11 pm Comments (0)