What is the value of effectiveness for a regenerator?
Thus we see that for highly effective regenerators (close to ε = 1) a 1% reduction in regenerator effectiveness results in a more than 5% reduction in thermal efficiency η. Furthermore we see that if one has a regenerator that has an effectiveness of 0.8, the thermal efficiency has dropped by half to around 30%.
Is regenerator a heat exchanger?
A regenerative heat exchanger, or more commonly a regenerator, is a type of heat exchanger where heat from the hot fluid is intermittently stored in a thermal storage medium before it is transferred to the cold fluid.
What is the difference between regenerator and recuperator?
In a regenerator heat from the primary medium is first stored in a thermal mass and later (next cycle) regenerated from that mass by the secondary medium. In a recuperator both media are separated by a wall through which heat is transferred directly.
What is back work ratio?
Back Work Ratio : The fraction of the work produced by the turbine that is consumed by the compressor.
What is a high heat transfer coefficient?
The overall heat transfer coefficient is influenced by the thickness and thermal conductivity of the mediums through which heat is transferred. The larger the coefficient, the easier heat is transferred from its source to the product being heated.
What do you mean by regenerator?
1 : one that regenerates. 2 : a device used especially with hot-air engines or gas furnaces in which incoming air or gas is heated by contact with masses (as of brick) previously heated by outgoing hot air or gas.
What is work ratio and back work ratio?
The two main applications of gas turbine engines are jet engines and electric power production. Some of the power produced in the turbine of a gas turbine power plant is used to drive the compressor. The ratio of the compressor work to the turbine work is called the back-work ratio.
How do you calculate work ratio?
The working ratio measures a company’s ability to recover operating costs from annual revenue. It is calculated by taking total annual expenses, excluding depreciation and debt-related expenses, and dividing it by the annual gross income. The lower the ratio, the more profitable a company is.