0
The overall heat transfer coefficient represents the rate at which heat is transferred between two mediums per unit area and per unit temperature difference. It combines the individual resistances to heat transfer in conduction, convection, and radiation into a single value. A higher overall heat transfer coefficient indicates a more efficient heat transfer process.
What else can I help you with?
How does the resestance to heat transfer of the matrrial of the condenser pipe effect on the transfer coefficient?
The resistance to heat transfer of the material of the condenser pipe affects the overall heat transfer coefficient by increasing the overall thermal resistance. A higher resistance to heat transfer in the material of the condenser pipe will reduce the heat transfer coefficient, making heat transfer less effective. This can result in reduced efficiency in the condenser's operation.
What is the convective heat transfer coefficient of water and how does it impact the rate of heat transfer in a system?
The convective heat transfer coefficient of water is a measure of how easily heat can move through water. A higher convective heat transfer coefficient means heat can transfer more quickly. In a system, a higher convective heat transfer coefficient can increase the rate of heat transfer, making the system more efficient at exchanging heat.
What is the ambient temperature formula used to calculate the overall heat transfer in a given environment?
The formula used to calculate overall heat transfer in a given environment is Q U A T, where Q is the heat transfer rate, U is the overall heat transfer coefficient, A is the surface area, and T is the temperature difference between the object and the environment.
Does juice temperature increase with increasing convective heat transfer coefficient at any constant kettle surface temperature?
Yes, the juice temperature increases with an increasing convective heat transfer coefficient at any constant kettle surface temperature. The convective heat transfer coefficient represents the efficiency of heat transfer from the kettle to the juice. As the convective heat transfer coefficient rises, more heat is transferred from the kettle surface to the juice per unit of time. This increased efficiency results in a faster temperature rise in the juice. Therefore, a higher convective heat transfer coefficient enhances the overall heating process, leading to a greater temperature increase in the juice even when the kettle surface temperature remains constant.
What is the heat transfer coefficient of water and how does it affect the efficiency of heat transfer processes?
The heat transfer coefficient of water is a measure of how well water can transfer heat. It is influenced by factors such as temperature, flow rate, and surface area. A higher heat transfer coefficient means that heat can be transferred more efficiently between water and another substance. This is important in heat transfer processes like cooling systems or heating systems, where efficient heat transfer is crucial for optimal performance.
How does the resestance to heat transfer of the matrrial of the condenser pipe effect on the transfer coefficient?
The resistance to heat transfer of the material of the condenser pipe affects the overall heat transfer coefficient by increasing the overall thermal resistance. A higher resistance to heat transfer in the material of the condenser pipe will reduce the heat transfer coefficient, making heat transfer less effective. This can result in reduced efficiency in the condenser's operation.
What is the value of an overall heat transfer coefficient in an engine oil cooler?
I have a book (Introduction to heat transfer - Bergmann), there is an example of an oil cooler cooled by air (crossflow heat exchanger with both fluids unmixed). There is written: "... with an overall heat transfer coefficient of 53 W/(m²*K)."
How does dirty overall heat transfer coefficient affect water flow rate?
A decrease in the overall heat transfer coefficient due to fouling or dirt buildup can reduce the efficiency of heat transfer in a system. This can lead to a decrease in the water flow rate as the system needs to compensate for the reduced heat transfer efficiency. Increased resistance to heat transfer can result in higher energy consumption and reduced performance of the system.
What is the convective heat transfer coefficient of water and how does it impact the rate of heat transfer in a system?
The convective heat transfer coefficient of water is a measure of how easily heat can move through water. A higher convective heat transfer coefficient means heat can transfer more quickly. In a system, a higher convective heat transfer coefficient can increase the rate of heat transfer, making the system more efficient at exchanging heat.
What is the ambient temperature formula used to calculate the overall heat transfer in a given environment?
The formula used to calculate overall heat transfer in a given environment is Q U A T, where Q is the heat transfer rate, U is the overall heat transfer coefficient, A is the surface area, and T is the temperature difference between the object and the environment.
Does juice temperature increase with increasing convective heat transfer coefficient at any constant kettle surface temperature?
Yes, the juice temperature increases with an increasing convective heat transfer coefficient at any constant kettle surface temperature. The convective heat transfer coefficient represents the efficiency of heat transfer from the kettle to the juice. As the convective heat transfer coefficient rises, more heat is transferred from the kettle surface to the juice per unit of time. This increased efficiency results in a faster temperature rise in the juice. Therefore, a higher convective heat transfer coefficient enhances the overall heating process, leading to a greater temperature increase in the juice even when the kettle surface temperature remains constant.
What is the effect of overall heat transfer coefficient U to heat exchanger performance?
The equation for the duty of a heat exchanger is:Q=U*A*LMTDwhere:Q is the dutyA is the overall heat transfer areaLMTD is the log mean temperature difference.generally when desiging heat exchangers the desired duty is known, as are the desired inlet and outlet temperatures. Therefore we solve for A to find the overall heat transfer area.A= Q/(U*A*LMTD)If we hold Q and the LMTD constant, you can see that a larger overall heat transfer coefficient U, will result in a small exchanger area and, therefore; a smaller, less expensive piece of equipment.The the greater the U, the better the performance.
What is the heat transfer coefficient of water and how does it affect the efficiency of heat transfer processes?
The heat transfer coefficient of water is a measure of how well water can transfer heat. It is influenced by factors such as temperature, flow rate, and surface area. A higher heat transfer coefficient means that heat can be transferred more efficiently between water and another substance. This is important in heat transfer processes like cooling systems or heating systems, where efficient heat transfer is crucial for optimal performance.
Why heat transfer coefficient decrease with increase in fluid viscosity?
An increase in fluid viscosity can impede the movement of fluid molecules, reducing their ability to transfer energy through the fluid. This decreased fluid mobility results in a lower heat transfer coefficient, as there are fewer fluid molecules available to transport thermal energy across the surface. Additionally, higher viscosity fluids may form boundary layers that resist heat transfer across the fluid-solid interface, further reducing the overall heat transfer coefficient.
What is the convective heat transfer coefficient of water and how does it affect heat transfer processes?
The convective heat transfer coefficient of water is a measure of how easily heat can transfer through water by convection. It represents the rate at which heat is transferred between a solid surface and water through the movement of fluid particles. A higher convective heat transfer coefficient means that heat can transfer more efficiently, leading to faster heat exchange processes. This coefficient is influenced by factors such as temperature, flow rate, and surface area, and plays a crucial role in various heat transfer applications, such as cooling systems and thermal management.
Conductive heat transfer coefficient of ptfe?
12
What is the heat transfer coefficient for copper in SI units?
400W/mK
