Tag Archive | "food"

Make Use of Solar Refrigerators

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Solar refrigerator are environmental friendly, as they cut down on the greenhouse gases because they are not reliant on fossil fuels to run.

Solar Refrigeration by Photovoltaic Cells

Solar Refrigeration by Photovoltaic Cells

Photovoltaic or solar cells are used to produce refrigeration. These solar cells utilize the solar power energy and convert it into electrical power. Solar refrigerators also contain thicker insulation hat is typically about 4 inches. Initial expense of buying a solar refrigerator is higher than the conventional refrigerator or electrical refrigerator.

Features of Solar Refrigerators

These refrigerators are small in size, jus about the chest size. Despite of high initial costs, they are still cost-effective than electrical refrigerators. These refrigerators are portable and can be used anywhere, but most often they are used by cabin owners, remote home and RV owners. These refrigerators typically run on the backup battery of 12-volt and are capable of reaching temperatures of about 30 degrees cooler than the exterior temperature. These refrigerators do not require high amp-hour because solar panels are the primary source of battery recharging for these refrigerators.

Output of Solar Refrigerators

Models of solar refrigerators are typically marketed on the basis of their output in watts. Watts can be converted into amps by using basic equation that 100 watts provide approximately 6.25 amps or 16 volts when the sun is shining at its peak. It doesn’t account for solar intensity hat changes throughout the day. Read the full story

Solar Heat for Solar Oven

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Solar power is of great use and helping human life a lot in various ways without charging a dime. There is no expensive equipment is required for utilizing solar power. One of these uses of solar power includes cooking oven. You can use solar power to empower your cooking and can make it safer and cleaner.

Cost of Solar Ovens

Cost of Solar Ovens

There is a great variety of solar ovens available at marketplace at different cost. The costs of solar ovens range from $32 to $260. Also, you can build solar ovens at your home just by little knowledge.

Components of Solar Ovens

Solar ovens usually comprise of dark colored pots that are tailored in a way so they can absorb sunlight. These pots are fitted closely with tight lids that contain moisture. The pots are enclosed within a box, inverted glass bowl or plastic bags that are heat resistant. Each of these plastic bags works like glazing solar collectors and enable these collectors to collect heat and prevent that heat from escape. Read the full story

Setbacks of Ethanol as an Energy Source

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Natural reserves like natural gas, coal, oil etc depleting exponentially and soon a time will come when these natural reserves will bid goodbye to us forever. Currently and since the time when humans become mindful of the wonders of natural resources, these resources are doing great job by fueling our cars and heating homes. Due to fewer deposits of these natural resources, many countries are finding alternate sources for energy production. Not only for the fewer energy resources but also for the betterment of environment, alternative sources of energy are inevitable to be practiced.

Ethanol as Energy Needs Solution

Ethanol as Energy Needs Solution

The debate of what is the best alternate energy source is a never ending debate. Many people have advocated ethanol as an appropriate alternate source of energy. In many countries ethanol has already been adopted as a source of energy for automobile fueling and for other purposes. However, there are some serious setbacks of ethanol as an alternate source of energy. It is important for people be aware of these setbacks.

Understand Ethanol

First, it is very important to understand what ethanol is and how it is produced. I is a corn based fuel that has a potential to be used as energy source for automobiles fueling and trucks. Many studies have shown that ethanol releases toxic substances into the environment through vehicle exhaust. Read the full story

We Share This Earth – A Provoking Thought

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Climate change over the past decade has been one of the most serious issues for people. Global Warming has ignited several causes to save planet Earth. Earth is the home to several species of Plants, Animals, Insects, Birds, Marine life and Human Beings.

Why I Cant Be A Skeptic

Why I Cant Be A Skeptic

We come across the 4 seasons and experience the delights of Mother Nature such as rainfall and snowfall. We live here and it is our responsibility to work towards the betterment of this society. Scientists over a course of decades have come to the conclusion that if we do not take preventative measures to bring a change, the consequences may be dire. Here are the top 10 reasons why climate change cannot be denied by anybody.

Rise to 6 Degree Celsius – Proven Theory

The temperature of Earth may rise to over 1, 2, 3 or 4 degree centigrade over the next 50 years. What will happen if this occurs? Scientists have agreed mutually that if the Earth’s temperature rises by over 1 degree, the melting of Glaciers will continue. Many of the animals like Seal’s, Panda’s and Polar Bears may face extinction. The risk of flooding will greatly increase in the eastern horizons. Agricultural problems will surface. Many species of animals and birds will lose their habitats as well.

We Already See the Signs

Wars will be fought over the right to food and drinking water. Forest fires will become common and many of the worlds most scenic and dense vegetations like Amazon forest will become a victim of deforestation. People will resort to violence and the Earth as we know today may not ever be able to return to its normal climate.

4 Degree Rise is Proved

At 3.5 degrees rise, Earth will experience rash and unpredictable weather conditions. Tornadoes, Sea Storms, Hurricanes and flooding will be common. The snow accumulated over the European Alps, Indies, Asian Mountain Ranges and the North and South Pole will completely be melted. Antarctica will no longer exist. The world will fall in panic. 4 degree centigrade rise is much the same as 3.5 or 3 degrees. Low lying African countries like Egypt will be lost completely to the sea with Bangladesh. New deserts will appear all over the world in places like Spain.

Skeptic May Lose Life

These are some of the effects of a 4 degree temperature rise. Imagine what will happen if it crosses the checkpoint of 5 and 6 degrees? A major chunk of Earth will be uninhabitable for Earthlings. People will resort to Northern Europe as refugee’s. The resources to accommodate these people will slowly vanquish. Methane Gas will rise from the Ocean bed and add to the Greenhouse gases.

Things Need To Be Worked Out

Things Need To Be Worked Out

Weather change is one of the most deadly of issues these days. The reason why I do not doubt the authenticity of this cause is because I experience the effects of climate change myself. As an individual, one cannot neglect the effects of climate change. Read the full story

Is Your Coffee Sustainable?

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We drink coffee for the change of taste, to enjoy it on a cold day with friends and family but for many of us coffee is an addiction. The consumption of coffee is almost equal to tea. Either is a morning cup or a day break or even to re-energize your work battery time to time. The addicts of coffee usually consume 4 to 5 cups daily. But the question is: is it organic? Is it sustainable enough?

Coffee Sustainable

Does the consumer of coffee thinks before drinking it? No! But for the health purpose it should be kept in check and coffee contain quite a percentage of caffeine. Coffee is considered and marked as an organic drink hence, it is sustainable IF it is planted, and cropped in an organic manner. Many coffee manufacturers purchase their coffee beans from the shade grown coffee farms which is harmful. Read the full story

Overview of Recent Trends in Solar Technology

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These days, it is hard to find anyone who does not know about solar panels. Practically solar power is mostly used in remote areas away from national grid, but it is now becoming very popular in rural and sub-urban areas as well. Solar technology is progressing by leaps and bounds. It’s getting better and better each day.In following few paragraphs we have reviewed some latest advancement in this field:

1 – MIT Researchers Print a Solar Cell on Paper

Solar Cell on Paper

The idea of clean and green fuel is great but it has certain disadvantages. First it’s so much expensive, second their power conversion rate is quite low. Final disadvantage is that you need storage space to save all the power, which is converted by a clean and green technology. The MIT researchers had developed solar cells printed on paper. This technology will take years to be in market for commercial use, but it is an interesting development.

2 – Solar Greenhouse to Produce Food and Electricity

Solar Greenhouse

It seems amazing that a greenhouse produce solar power and food. This unique has been done in Italy. Renewable energy companies Solar ReFeel, CeRSAA and solar panel manufacturer Solyndra are the companies are responsible for this project. This solar power greenhouse is being built at CeRSAA’s Albenga, Italy. Basic purpose of this project is to attain production of both food and electricity. The research team is also experimenting to validate the crop growth benefits of Solyndra’s technology by taking help of independent testing by a leading agricultural institution.

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Effects Of Global Warming

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There are multiple effects of global warming, some which we do see today, and some that will appear more with the passage of time. Earlier in a post, I explained the various factors that lead to global warming, and its causes. Today, I will be discussing the consequences of global warming and its effects.Global Warming

Global warming has led to the recent changes in the earth’s temperature and the sea levels. Although there is strong evidence that suggests that our planet is warming, but it is very difficult to identify a single cause of this.

As the Earth’s average annual temperature rises, we may see its various effects in different areas. One of its main consequences could be the rising sea levels. It could lead to many towns and cities that lie below sea level to become victim to flooding leading to loss of life and serious economical impacts.

Why Is Solar Energy Important?

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Solar energy is extremely important for us to survive. Besides helping us to stay warm, and enabling other organisms to survive, it is used in the commercial power production as well.

solar energ

Solar energy is also essential for plant life as it is necessary for photosynthesis, the process through which plants generate energy and process nutrients for their growth by converting solar light for their own use by utilizing chloroplasts within their leaves and bodies.

Through this process, food is produced for other herbivores together with oxygen for us to breath and removal of carbon dioxide from the atmosphere, allowing creatures such as ourselves to survive while maintaining a balanced world temperature.

How To Save Up On Energy And Money In Winters?

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Winter season can upset your budget due to high cost of heat and utilities. However, it is possible to save energy and money by following these simple methods.


1. Stock your refrigerator and freezer properly. Adequate air flow is required for a refrigerator and freezer to operate efficiently. Without adequate air flow, the refrigerator works harder to keep cool. Don’t overstock your freezer and you will save money on energy costs. Turn the temperature setting to the lowest where you can still maintain the freshness and safety of food.

2. Use a toaster oven or microwave instead of the oven. It is possible to cook delicious winter meals in a crock pot. These appliances generally consume less energy as compared to the oven, resulting in lesser cost.

3. Keep the curtains and blinds open, letting in the sunshine instead of using lights. This way you can enjoy the natural energy provided by the sun and your home will also be a bit warmer and, enabling you to save money. Also keep the curtains and blinds close at night to insulate from the cold weather.

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New Renewable Energy Option Unveiled

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The world’s first organization for green electricity, ecotricity, has decided to offer green gas to UK householders for the first time.

green elect.

The company will be generating the energy using a mixture of green and traditional ‘brown’ sources.

The company has stated that the residents will not have to pay any additional costs for the green fuel. Moreover, it also aims to match British Gas’ standard gas and dual-fuel charges for each area.

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How Batteries Work and Store Energy

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Energy is of  kind that can neither be created nor destroyed but it can be changed into different forms. With the growth of time it is found that energy can also be stored in battery in the form of chemical energy.  On connecting battery in a circuit, it produces electricity.

A battery has two ends, a positive and a negative terminal. When the positive terminal is connected to the negative end with a wire, it forms a circuit. The electrons will flow in the wire and the electricity will be produced.


This is possible because the chemical reaction in the battery takes place. The reaction only takes place when the flow of electrons occurs.  The energy in this way can be saved in batteries, as the chemical reacts only when the electrons move from negative to the positive terminal through a circuit. This way the batteries are useful in storing energy.

The Inside of a battery: Chemical Reactions

The process that takes place inside the battery can be simply understood by zinc-carbon battery also known as carbon battery in short. The battery consists of acidic material and a rod of zinc situated down the centre. This involves bit knowledge of chemistry. The acidic substance in the battery reacts with the zinc rod; it in result produces hydrogen gas and heat energy. chemical reaction battery

The acid molecules break up into its small components usually the hydrogen and other atoms. The process results in the evolution of hydrogen ions that combine with the zinc atoms to give hydrogen gas. The same reaction doesn’t occur when the carbon rod is intact with the acid material. But if the carbon rod is connected with the zinc rod through a wire and a circuit is settled, the flow of electrons will begin and some of them will attach with the hydrogen on the carbon rod.

This releases a little hydrogen and less heat, the heat portion is exactly what that circulates in the circuit. The energy in the circuit is capable to perform anything, it can lit a light bulb and turn on a small motor, when talking of a big battery, it can start an automobile. A battery keeps working till the whole zinc gets dissolve in the acid. As the zinc gets finished, the battery then remains no longer of use.

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