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What is the effect of pressure and temrature on the rankine cycle?
In the Rankine cycle, increasing the pressure raises the boiling point of the working fluid, allowing it to absorb more heat during the heating phase and improve the cycle's efficiency. Higher temperatures lead to greater thermal energy conversion into work, enhancing overall efficiency as well. Conversely, lower pressure and temperature can reduce the cycle's efficiency and output power. Thus, optimizing these parameters is crucial for maximizing the performance of a Rankine cycle system.
What component in the refrigeration cycle reject heat?
The component in the refrigeration cycle that rejects heat is the condenser. In the condenser, the refrigerant, which is in a gaseous state, releases heat to the surrounding environment and condenses into a liquid. This process is essential for maintaining the cycle, as it allows the refrigerant to absorb heat from the interior space when it returns to the evaporator.
Why condenser pressure is less than a atmospheric pressure?
Condenser pressure is often less than atmospheric pressure to facilitate the condensation of refrigerant vapor into liquid at lower temperatures. This is achieved using a vacuum system or by employing cooling methods that lower the saturation temperature of the refrigerant. Lowering the pressure reduces the boiling point of the refrigerant, making it easier to condense and improving the efficiency of the refrigeration cycle. Additionally, operating at lower pressures can help prevent the formation of vapor bubbles in the condenser, ensuring efficient heat exchange.
What condenser value do you want when using 100X objective lens?
When using a 100X objective lens, you typically want to use a high numerical aperture (NA) condenser lens to match the high NA of the objective lens. A condenser with a NA value equal to or greater than the NA of the objective lens (typically around 1.4) is recommended for optimal resolution and contrast in microscopy.
What temperature does water cool using the liebig condenser?
Water typically cools to around room temperature (20-25°C) when passing through a Liebig condenser, which is a type of water-cooled condenser used in laboratory settings to cool hot vapors and condense them back into liquid form.
What are four major components of the Rankine cycle?
The four major components of the rankine cycle are as follows: 1. boiler 2. turbine 3. condenser 4. pump i.e. in short (B-T-C-P)
How do you increase the efficiency of rankine cycle?
To increase the efficiency of a Rankine cycle, you can: increase the boiler pressure to increase the temperature of the steam entering the turbine, lower the condenser pressure to improve the quality of the exhaust steam, and use regenerative feedwater heating to reduce heat losses. Additionally, using superheated steam can also improve the efficiency of the cycle.
What are the key components and processes depicted in a Rankine cycle diagram?
A Rankine cycle diagram typically shows four main components: a boiler, a turbine, a condenser, and a pump. The process involves the heating of water in the boiler to produce steam, which then expands through the turbine to generate power. The steam is then condensed back into water in the condenser before being pumped back to the boiler to repeat the cycle.
Difference between rankine and brayton cycle?
Brayton cycle: It is open cycle. Rankine cycle: It's close cycle. Brayton cycle: Mostly used in gas turbine engine. Rankine cycle: Mostly used in power generation plant. Brayton cycle: Resemble less to Carnot cycle. Rankine cycle: Resemble is more to Carnot cycle.
What is modified rankine cycle?
modified rankine cycle basically same as rankine cycle but main difference is inisentropic expansion process.we are nt expanding the styeam completely.steam is expanded up to certain level and after that it dumped in condenser due to high vacuum in condenser.the work losses by restricting the expansion of steam is very less which can be neglected.so that the stroke length of cylinder is reduced and the capitalcost of engine also reduced.engine performance is also good
Why efficiency of rankine cycle is more in winter than in summer?
The efficiency of a Rankine cycle is higher in winter than in summer because the colder ambient temperature in winter allows for better heat rejection in the condenser, resulting in a lower turbine inlet temperature. This leads to higher efficiency due to reduced heat losses and improved thermodynamic performance of the cycle components. Additionally, the colder air in winter is denser, which can improve the efficiency of the air-cooled condenser in the power plant.
What type of cycle used in steam turbine?
Rankine cycle is used in steam turbine
What is rankin cycle?
The Rankine cycle is the fundamental thermodynamic underpinning of the Steam_engine. It is named after William_John_Macquorn_Rankine
What are the relative advantage of Rankine Cycle over Carnot Cycle in thermal power plants?
Rankine cycle allows for practical implementation with real working fluids such as water, making it more feasible for thermal power plants compared to the idealized Carnot cycle. Rankine cycle also allows for the use of turbines and pumps which are more efficient than isothermal expansion and compression processes in the Carnot cycle. Additionally, Rankine cycle can be modified with reheating and regeneration to improve efficiency further, something the Carnot cycle cannot achieve.
How to increase a Thermal efficiency of rankine cycle?
To increase the thermal efficiency of a Rankine cycle, you can: Increase the temperature of the heat source entering the boiler. Lower the temperature of the heat sink exiting the condenser. Improve the insulation of the system to reduce heat losses. Enhance the performance of the turbine and pump by reducing internal losses.
What is the difference between the Carnot cycle and the Rankine Cycle?
carnot cycle is a very ideal cycle that isn't practical at all , 'cause we add and reject heat isothermally , a wet mixture enters the turbine so it'll cause pitting and erosion and a wet mixture enters the pump , and the pump can't deal with a 2 phases fluid rankine cycle is a practical cycle but with a very low efficiency so the main difference lies in the adding and rejecting of heat
What is the effect of pressure and temrature on the rankine cycle?
In the Rankine cycle, increasing the pressure raises the boiling point of the working fluid, allowing it to absorb more heat during the heating phase and improve the cycle's efficiency. Higher temperatures lead to greater thermal energy conversion into work, enhancing overall efficiency as well. Conversely, lower pressure and temperature can reduce the cycle's efficiency and output power. Thus, optimizing these parameters is crucial for maximizing the performance of a Rankine cycle system.
