old refrigerator energy use

It is based on the Peltier effect. If a current is passed through a thermo- couple, heat is absorbed (or removed) at one junction and is evolved at the other junction of the thermo-couple. If the first junction is in a closed region, it can cool it. Such a refrigerator uses no m..

A heat engine takes heat from a hot body, converts a part of it into work and rejects the rest to a cold body. A refrigerator also known as a heat pump, does the reverse operation. It takes an amount of heat Q 2 from a cold body, an amount of work W is done on it by the surrounding and th..

Energy - Fuel wood, agricultural waste and cow dung (gobar), form the major sources of energy for rural India and most of the urban Indian population consumes energy from coal, petroleum, natural gas (CNG), hydel power (hydroelectricity), sun, wind and nuclear power. A..

Energy can be defined as the ability to do work. A good source of energy would be the one which would: do a large amount of work per unit volume or mass be easily accessible be easy to store and transport and be economical Fossil Fuel Fossil fuel is a hydrocarbon de..

Judicious use of Energy - In order to live and enable ourselves to do everyday work we need energy. The prosperity of a country depends upon the availability of energy. Huge amount of electrical energy is used to run the air conditioners, ..

Advantages of Using Solar Energy - It is present everywhere. It is available in plenty. It does not cause any environmental pollution like the fossil fuels and nuclear power. Solar cells last a longer time and have low running costs. In the first half of the twentieth century so..

One GTP is hydrolysed to GDP as each successive amino acid-tRNA complex attaches to the A site of the ribosome. A second GTP is broken down to GDP as the ribosome moves to each new codon in the mRNA. One ATP is hydrolysed to AMP during amino acid activation. Thus, the formation of each peptide bond..

>Complete the following fission reaction: What should be the value of x? Is the mass conserved? Explain. Suggested Answer:- x = 3 Mass is not conserved. The difference in mass is converted to energy as the binding energy of the nuclides changes. Example 9:- What is the function ..

Some halides of carbon find wide use in industry. For example, Carbon tetrachloride is used as a fire extinguisher under the name pyrene. Carbon tetrachloride is a common solvent for plastics, resins etc. Freon (CF 2 Cl 2 ) is used as a refrigerant..

Carbon dioxide is used In the manufacture of aerated water (soft drinks). As a fire extinguisher. For the manufacture of sodium carbonate and sodium bicarbonate by Solvay process. As a refrigeration/coolant (in the form of dry ice) for perishables in food industry e...