Sunday, May 31, 2009

What is Organic Farming and is it Important

Organic farming is a broad concept with extreme application. It is well appreciated on a large scale by the people as now with the help of it they can easily grow their own food. If you have a little bit of free time with you then you need not to face any kind of problem. You can prepare and serve good quality delicious food by doing organic farming at your home.

It is not true that organic farming is practiced at a small scale only. By having a trip of farming sector you can easily understand how much vast this sector actually is. This is not the case some time before. Few years back it was not a highly thriving and demanding sector but now the case has totally changed. It is now not limited to a small scale industry as day by day more corporate sectors are taking interest in this field. Large corporate farming is taking keen interest in the concept of organic farming. Continuous research is going on to find out the way by which huge fields of a single crop can be grown. No one can deny the fact that in the process of organic farming, pests are believed to be the major threat. Due to harmful impact on the biodiversity unnatural pesticides are not much preferred to use.

If you are going for the natural pesticides for controlling the pests then it is certainly an eco friendly approach but believed to be much expensive in contrast to unnatural ones. Some time before, due to expensive nature they were not much preferred in the process of organic farming. After the entrance of large scale industries with huge budget this can be achieved now very easily. Natural pesticides can be a good option when it is about the large scale organic farming but if you are going for it at your home or at a small scale in a separate piece of land then it is advisable to look for any other good option. This is because like other kinds of farming organic farming also requires the process of sowing, cultivating and harvesting. If you do not have proper arrangement of water for the purpose of irrigation then you require depending largely on the rain water. If you are concluding the process of organic farming at your home then irrigation is not a big issue but even at a small scale proper arrangement of water is very essential. If you do not have a huge budget with you then it can be a difficult work for you. You require investing a good amount on purchase of seeds, irrigation, fertilizers, harvesting, etc.

There is much debate till now on the use of unnatural pesticides in the process of organic farming. Several environmentalists and consumer protection organization have claimed that the use of unnatural pesticides not only damage the environment but also have an adverse impact on the quality of food. For killing the insects and pests these pesticides are used but they are not considered helpful after sometime. It is so because these insects as well as the pests easily get adapted to the effects of the chemicals involved in them and so these pesticides looses their worth. Sooner or later it damages the health of the final consumer who without knowing consumes a large amount of lethal chemicals and synthesized materials along with the natural food. Thus it is injurious for the health of the human being as well.

Thus there are several ways by which you can have your favorite vegetables as well as fruits and that too with the help of inorganic as well as organic farming. As there are several pros as well as cons of both it is up to you to decide the one that is best for you. You can make use of organic farming to turn your dreams into reality and the best part is it is already benefiting millions of people so you are not at all required to worry for it as well.


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Monday, May 18, 2009

How to Fix the Air Conditioning in a Car

Air conditioner in car has become a necessity these days. It is very difficult to travel in a car without an AC in scorching heat. The car AC is very small and the designing and the functioning is completely different from that of the air conditioners used in offices and homes. There are two sides of an air conditioning system of a car, viz high side and low side. The compressor of the AC begins at the high side, and performs the functioning of the pump. The refrigerant is moved through the system with the help of the compressor. The expansion valve is there at the low side, which restricts the flow of refrigerant. This helps in reducing the temperature and the pressure of the refrigerant.

The car air conditioner works almost like a refrigerator and has a multi-component piece of machinery. The warm air is removed from the car and the cool air is pushed inside the car. This helps in maintaining the temperature of the small space in the car, and moderates the area.

There may be times when the AC in the car stops working or does not give effective cooling. A repair is required at this stage. Each and every car is made of different design and model. But, the basic functioning of the AC in most of the cars is the same. The basic problems with the car air conditioner and the basic ways to fix the problems of car air conditioner have been listed below:

Absence of cool air and improper cooling are the signs of problems with respect to the car air conditioner.

In order to diagnose the problem with your car air conditioner, it is very important to have proper information and knowledge of the different parts of the car air conditioner. There are five components of the car AC viz the compressor, the condenser, the expansion valve, the refrigerant, and the dryer or evaporator.

It is very important to understand the functioning of all the parts so that the right action can be taken in case of any problem.

The refrigerant is pumped out through the compressor. The compressor acts as a power unit of the car air conditioner.

The condenser performs the function of changing the refrigerant to the liquid form.

The liquid formed through the condenser is converted into cold air with the help of the evaporator or the dryer.

There may be some pressure on the condensed refrigerant. This pressure is removed with the help of the expansion valve and moved into the evaporator.

In case of ineffective cooling, check the refrigerant for any kind of leakage. A fluorescent dye that is readily available at any auto part shop can be used to check the refrigerant. Autozone or NAPA can be used as the fluorescent dye.

The instructions given on the pack of the dye that you purchase should be followed completely and carefully. In most of the cases, the dye is added through the low pressure A/C recharge port that is found on the canister of the air conditioner of the car.

Use the U/V light to check for the leakage. In case of leakage of the refrigerant, the refilled kits can be bought from any auto supply store. These refilled kits are sealed and the replacement can be done by anyone at home.

In case this is not the problem, check for any kind of problem with the fuses, wires, and fan belts. The fuse may have turned bad. The wires might have broken, and the belts of the fan may have got damaged. All these problems may be creating trouble with the functioning of the pump. In case of any problem with any of these parts, get the parts replaced to ensure proper functioning of the car air conditioner.

The air conditioner should be tested after making any kind of repair done by you.

In case one has tried all the above methods to make the AC function properly, and even after replacing all the parts, the AC does not function properly, then there is a need to call a professional.


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