Friday, September 5, 2014

Go into the details of the cooling cycle must have to know some basic laws, which depend on them al

Engineer magazine and the laws of the cooling cycle
Go into the details of the cooling cycle must have to know some basic laws, which depend on them all cooling systems, a five fundamental laws, namely: 1. Fluid absorbs heat when it turns from a liquid state to a gaseous state (from liquid to vapor) and expel heat when the transition from steam Means to 0.2. Alter the condition of the fluid at a temperature and pressure steadfast.
5. thermal energy and other forms of energy can be converted from any picture to another, for example, could be a turning rational ag electrical energy into heat energy, and Beks thermal energy can be converted into electrical energy, rational ag as well as the transformation of thermal energy into energy Maktanikih and so on. Core cooling circuit:
Called cycle compression rational ag steam this name because the compressor compresses vapor refrigerant from low pressure to high pressure, and this compression happens transmission of thermal energy rational ag from inside the space radiator to the outside, where the compressor to transfer heat from one place to another, rational ag it has also called Baltalmbh Thermal Heat Pump.
The system consists of cooling mainly by the high pressure and the low pressure side, and be able to follow the cycle cooling simple Kalmodhh in the form of 3-1, the beginning of the reservoir fluid Liquid receiver (a), which is a container used to store liquid refrigerant as a reserve rational ag in the cooling cycle, and yet installed intensive direct.
Upon landing piston during rational ag a run clouds and opens the bathroom clouds (d) to allow the entry of steam coming from the evaporator and close this valve again at the end of the half to begin the compression stroke and the pressure inside the cylinder compressor is higher rational ag than the pressure in the pipe expulsion opens the valve expulsion (e) and expels pressurized steam to condenser (f) and the temperature of compressed vapor is very high and during the intense, moving heat from the refrigerant to the surrounding medium (air or water) depending on the type of intensive user and thus get rid of refrigerant from the heat and condenses into a liquid, and return the liquid to the fluid reservoir (a) where the cycle begins all over again. And now we will start to talk about the basic elements of the cooling circuit and the first start the compressor.
The function of the compressor in the cycle is to raise the compressive pressure dry steam from low pressure to high pressure of the capacitor, and the compressor rational ag is one of the key parts in any mechanical cooling Doah Without the compressor can not cycle occurs cooling and re-cooling liquid to its original state in terms of heat content.
The purpose of the use of the compressor is to raise the pressure refrigerant coming from the evaporator pressure corresponding to the degree of saturation temperature higher than the ambient temperature or the surrounding medium, and this leads to a heat exchange between the refrigerant condenser and the surrounding medium, as it leads to the intensification of refrigerant and manufactures compressors shapes and sizes and designs different compressors and generally divided into:
Condenser is one of the key elements in any cycle cooling, and function of the condenser in the cycle compression steam are receiving vapor refrigerant hot high pressure coming from the compressor, and freeing it from the heat absorbed by the evaporator and this heat is a heat acidification and latent heat as well as heat resulting from the filling of the compressor and expel This heat to the surrounding medium if the surrounding medium is air called the condenser rational ag coolant rational ag condenser air (anaerobically) and if the middle ocean water called the condenser condenser coolant water (aqua) If the cooling condenser refrigerant back into a liquid. Control rational ag Valve Control Valve
The purpose rational ag of the control valve is to control the flow of refrigerant from the refrigeration condenser side of a high pressure in the evaporator to a session low of the compressor. In this LED is reduced pressure coolant coming from the condenser and therefore saturation temperature, where there is pressure for each temperature saturation concerned.
But without a change in enthalpy means that the amount of heat in the media before entering the control valve is equal to the amount of heat after graduating from the LED, but the coolant will be at low pressure and low temperature, a saturation temperature at this pressure.
The purpose of the burner in the cooling cycle is receiving refrigerant with low pressure rational ag and low temperature, and the next from the control valve, and make it in the tentacles thermal Contiguous with pregnancy and draws refrigerant temperature inherent to the evaporation of pregnancy and any amount of heat absorbed in the evaporator turning part of the liquid at a temperature rational ag to the saturation vapor pressure at the same temperature and evaporators are divided rational ag into two main types, namely:
There are other parts in the cooling cycle is necessary for the safety of the work of these key employees or to enable them to perform their work will find these parts in any refrigeration unit, whether the unit and cooling unit or commercial or industrial cooling unit for household and these additional parts are:
2 Break Oil Oil Separator is found in refrigeration rational ag units that operate in very low temperatures Kfrisrat cooling deep, where there is a break Alouette between Expulsion line of compressor and condenser, and the primary purpose of the separator oil is get rid vapor refrigerant hot high pressure of the excess oil and unwanted For the other parts of the circuit, such as condenser and the evaporator, where the oil is separated and returned to the compressor tray facility through a pipe and we will explain it in detail later:
3 There are also other important elements necessary for the proper functioning of the main parts of a heat exchanger, and dried, and the fluid reservoir, and for electrical circuits there are an officer thermostat temperature and high-pressure officer, and the officer of low pressure and other important elements. Graphs of the compression cycle with steam:
4 Finally, the process where the four occur in the burner and this process occurs under constant pressure rational ag and the evaporator absorbs heat from the space to be cooled and the coolant turns to steam with the stability of both the pressure and the degree of the

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