Heat Pumps

27 May

Do not cease talking about the limited reserves of fossil fuels. Energy crisis predicted since the mid-nineteenth century. One of the solutions proposed in those days, Lord Kelvin, does not lose relevance and today. Theoretical background "multiplier heat" flow from operations Carnot. These days, the unit for clean energy for heating said heat pump.

At its core, the heat pump does not differs from the refrigeration unit. It also carries heat from the body with a low temperature to a body with higher temperature. Refrigerator cools the food and the heat energy released into the environment. The main function of the heat pump is heating. It takes energy from the environment and gives her a room at a higher temperature level. The main advantage of the heat pump over other heating systems lies in the fact that for the production of 5 kW of heat energy it needs to be spent (mostly for driving the compressor) 1 1,5 kW of electrical energy. This does not contradict the law of conservation of energy, since the missing kilowatts of heat pump takes from the environment. Air at any temperature has a reserve of thermal energy. It needs to be cooled a few degrees to pick up this heat. Surface and ground water are more stable

Wireless Headphones

3 Jul

Headphones Wireless are devices that allow us to listen to music without taking into account the cables connected to the music source. But what makes them work without wires? Keep reading to learn how they function headphones wireless. Today, many people use wireless headphones, they know how to operate the headphones, but they don’t know about the current system of its operation. Headphones Wireless are technological gifts that allow us to listen to music without wires. They can be used in any source of music as a CD Player / DVD, television, computer or an mp3 player. However, cannot be connected directly with these sources, but he used the frequencies of radio or infrared to communicate with your headphones base station devices. The wireless headphone sound quality depends mainly on the range in which they are effective. Just want to say that if you go on the signal range of the base station, you will get a output blurred or No sound.

When these wireless headphones were launched for the first time, they were very expensive, but as I spent time and several companies used this technology, the price was reduced considerably. With the growing popularity of these wireless headphones, electronics manufacturing companies, have thought and they are working on the invention of new technologies that have improved the technologies incorporated in them, such as radio, infrared, Bluetooth, etc how to wireless headphones work? Wireless headphones have three devices as the transmitter, headphones and stereo. Since it is a wireless technology, it is obvious that it is not necessary to connect wireless headphones directly to stereo to listen to music. Rather it is necessary to connect the transmitter to stereo connecting cable, either in the headphones input wireless or any other type of audio output connection. The transmitter is the main part of the headphones Wireless, as does the work of reception of signal from the source of music and its transmission output on headphones, which must be in specific distances of operation.

Wireless technology, can use any radio or infrared frequencies to carry out the operation of signals. If wireless headphones are using infrared technology, they need to be in direct view of the wireless transmitter without an obstruction of the walls, tables, or other similar obstacles. Since infrared technology is based totally on the light, it will not be possible for transmitter transmit signal through solid materials, as light can not penetrate through solid materials. The signals can be received even in other rooms. However, other electronic equipment that are incorporated into a system that uses radio signals common, such as cordless phones, can disrupt the reception of frequencies. If both wireless headphones and any of these wireless devices are turned on at the same time, the signals sent by the transmitter would be received by both devices, and this can cause disorders of output.