Nama :Amalina Wardani
Nim : 115623267
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REFRIGERATOR
Refrigerator or freezer is often called an electricity were machines that work on the principle of equilibrium pressure using a material that serves to cool the refrigerant or as lowering the temperature. Cooling process works by removing heat from a hot object and move it to another object and the surrounding air. Actually refrigerator not only can work as a coolant because in addition there are parts that cause the cold, in other parts of the refrigerator also raises the heat as a result of the cold.
Some refrigerators are now divided into four spaces for storage of different food types:
-18 ° C (0 ° F) (freezer)
0 ° C (32 ° F) (meats)
4 ° C (40 ° F) (cooling)
10 ° C (50 ° F) (vegetables), to put different types of food.
-18 ° C (0 ° F) (freezer)
0 ° C (32 ° F) (meats)
4 ° C (40 ° F) (cooling)
10 ° C (50 ° F) (vegetables), to put different types of food.
The capacity of a refrigerator is measured in liters. Usually the contents of freezers is 100 liters and 140 liters of coolant (but can vary widely).
Refrigerator Parts :
a. Compressor
a. Compressor
The compressor is an important part in the refrigerator. If the analogy with the human body, together with the compressor functioning heart pumping blood around the body as well as the compressor. Compressor pumping and sucking material functioning cooling (refrigerant) throughout the refrigerator for more detailed function is sucking low-pressure gas from the evaporator, having smoked a low-pressure compressed gas or compressed so that the temperature of the gas rises again, so it could also be said Kompressor function is to change the gas low pressure to high pressure gas.
The compressor has two main channels, namely channels suction (suction line) and the exhaust / exit (discharge line). Suction channel should be connected to the output pipe evaporator, while the channel tap is connected to the input pipe condenser. To distinguish the suction channel and the channel tap can be seen from his physical condition. Suction channel diameter larger than the pipeline tap. Through the compressor suction line will suck the vapor refrigerant material from evaporator emudian output channel is pressed so that upon exiting the compressor, through the exhaust channel (discharge). The compressor is the part that is connected to the power source and the sensor breakers.
b, Condenser.
In a refrigerator cooling system functioning releasing heat / heat from the refrigerated food products. As the name implies, condensers, condensing the material component is in charge of refrigerant (refrigerant) that is by changing the form of high-pressure refrigerant vapor materials into a liquid coolant material to release heat / heat into the surrounding air. Condenser only changes form into a liquid coolant material, while the pressure remains high. Types of condensers are widely used in refrigerator technology today is the condenser with air conditioning.
Installed after the condenser outlet (discharge) compressor. These components are usually made of copper pipe or aluminum pipe. On the side of the pipe were made of iron fin small or thin aluminum plate. Fins are useful to expand the heat transfer surface, so that the heat removed is more optimal. In this process the high-pressure gas from the compressor discharge pipe press fit, and with the help of a fan motor heat gas or high pressure gas is inhaled and expelled from the cooling system to the outside environment .. When heat flows from the condenser to the air, condensation temperature must be higher than the air that is between 12 degrees Celsius to -1 degrees Celsius. high pressure gas in the condenser and then cooled to a liquid gas to the expansion valve or capillary tube. Currently working refrigerator condenser will feel warm when held, and this heat can also be utilized.
c. Strainer (Filter Dryer / Filter / Faucet expansion)
Strainers are usually made of copper material. There are two kinds, namely empty strainers and strainers containing silica gel. This component serves to filter the liquid coolant material (refrigerant) emanating from the condenser to be free from dirt. This was intentionally done because the liquid coolant material (refrigerant) will be channeled into a hole that is really small with a diameter of holes in less than 0.032 inches.In a refrigeration system expansion valve located before the tip of the liquid line or evaporator. at high pressure fluid enters the expansion valve which comes from the condenser, expansion valve and then reduce the pressure of the refrigerant as it passes through the hole located under the expansion valve. With the reduction in pressure, the temperature of refrigerant to be down to a level below the ambient air. Low pressure is then driven into the evaporator in the form of fog. Filter (the filter) is also useful to filter impurities that may be carried by the flow of coolant material that comes out after doing so does not enter into circulation compressor and capillary tube. In addition, cooling the material to be distributed at the next process is cleaner so it can absorb heat more leverage.
Strainers are usually made of copper material. There are two kinds, namely empty strainers and strainers containing silica gel. This component serves to filter the liquid coolant material (refrigerant) emanating from the condenser to be free from dirt. This was intentionally done because the liquid coolant material (refrigerant) will be channeled into a hole that is really small with a diameter of holes in less than 0.032 inches.In a refrigeration system expansion valve located before the tip of the liquid line or evaporator. at high pressure fluid enters the expansion valve which comes from the condenser, expansion valve and then reduce the pressure of the refrigerant as it passes through the hole located under the expansion valve. With the reduction in pressure, the temperature of refrigerant to be down to a level below the ambient air. Low pressure is then driven into the evaporator in the form of fog. Filter (the filter) is also useful to filter impurities that may be carried by the flow of coolant material that comes out after doing so does not enter into circulation compressor and capillary tube. In addition, cooling the material to be distributed at the next process is cleaner so it can absorb heat more leverage.
If there is congestion due to a hard object, then the capillary tube should be replaced with new ones, with the same length and diameter. For this type of strainer that contains silica gel, in addition to filter out impurities, these components can also absorb moisture. If no moisture is trapped in the system, this component will immediately absorb it.
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