Stirling Cycle Refrigerator
1.1 Background
Thermodynamic cycle can be divided into two that are power cycle and refrigeration cycle. The cycle that produce net amount of works is called power cycle. The power cycle that can remain it working fluid in gaseous phase is called gas power cycle. There are many types of cycle in gas power cycle such as Otto cycle, Diesel cycle, Bryton cycle, Stirling cycle and Ericson cycle. The Otto cycle is known as ideal cycle for spark-ignition cycle while the Diesel cycle is known as compression-ignition internal combustion engine. The Bryton cycle is known as ideal cycle for the modern-gas turbine engineand can be categorize as one of the gas power cycle. The Bryton cycle itself has four internal reversible processes. The next cycle is Stirling cycle. This Stirling cycle involves an isothermal heat-addition process and isothermal heat-rejection process. .
In reversed of heat engine, it has refrigeration system. Refrigeration system is the transfer system for heat from low temperature region to higher temperature region. The device that produces refrigeration is called refrigerator, heat pump and air-conditioning. The cycle they operate is called refrigeration cycle. The refrigerator and heat pump operate on the same cycle but different with their objective. The objective of refrigerator is to maintain the refrigerated space at low temperature. Discharging this heat to a higher-temperature medium is merely a necessary part of the operation. But the objective of heat pump is to maintain heated space at high temperature by absorbing the heat from a low temperature source and then supplying that heat to high temperature medium such as house. The refrigeration cycle can be divided into two that is vapor compression refrigeration cycle and gas refrigeration cycle. In vapor compression refrigeration cycle, the refrigerant is vaporized and condensed alternately. This cycle is the modified of the Rankine cycle operating in reverse. It also can be the
Thermodynamic cycle can be divided into two that are power cycle and refrigeration cycle. The cycle that produce net amount of works is called power cycle. The power cycle that can remain it working fluid in gaseous phase is called gas power cycle. There are many types of cycle in gas power cycle such as Otto cycle, Diesel cycle, Bryton cycle, Stirling cycle and Ericson cycle. The Otto cycle is known as ideal cycle for spark-ignition cycle while the Diesel cycle is known as compression-ignition internal combustion engine. The Bryton cycle is known as ideal cycle for the modern-gas turbine engineand can be categorize as one of the gas power cycle. The Bryton cycle itself has four internal reversible processes. The next cycle is Stirling cycle. This Stirling cycle involves an isothermal heat-addition process and isothermal heat-rejection process. .
In reversed of heat engine, it has refrigeration system. Refrigeration system is the transfer system for heat from low temperature region to higher temperature region. The device that produces refrigeration is called refrigerator, heat pump and air-conditioning. The cycle they operate is called refrigeration cycle. The refrigerator and heat pump operate on the same cycle but different with their objective. The objective of refrigerator is to maintain the refrigerated space at low temperature. Discharging this heat to a higher-temperature medium is merely a necessary part of the operation. But the objective of heat pump is to maintain heated space at high temperature by absorbing the heat from a low temperature source and then supplying that heat to high temperature medium such as house. The refrigeration cycle can be divided into two that is vapor compression refrigeration cycle and gas refrigeration cycle. In vapor compression refrigeration cycle, the refrigerant is vaporized and condensed alternately. This cycle is the modified of the Rankine cycle operating in reverse. It also can be the