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How does temperature difference affect the rate of heat transfer?
Wiki User
∙ 6y ago
- Temperature Difference (.T ) between the two fluids - This is the driving force in heat exchange principles. The greater the .T, the greater the heat transfer rate .
- Fluid flow rate - Increasing flow rate will increase heat transfer rate.
- The nature of the heat conducting materials - Some materials have a high conductivity while others don't. This factor is 'built-in' in the design of the Exchanger and choice of materials. It is governed by the design engineers before manufacture.
- Surface area - The larger the surface area of the conducting interfaces, the greater the heat transfer rate.
The surface area, again, is controlled by the design and manufacture of the exchanger. The more tubes contained in the bundle, the greater the surface area. The tube length will also affect heat transfer, as will the outside diameter and metal thickness of the tubes.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoOne important factor is the 'difference of temperature' between the two substances. This factor is called delta-T, the change in Temperature. The greater this difference is - i.e. the larger the Temperature difference is between the two involved substances - the faster is the rate of thermal energy transfer.
Wiki User
∙ 13y agoThermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different. This process is one aspect of homeostasis: a dynamic state of stability between an animal's internal environment and its external environment (the study of such processes in zoology has been called ecophysiology or physiological ecology). If the body is unable to maintain a normal temperature and it increases significantly above normal, a condition known as hyperthermia occurs. This occurs when the body is exposed to constant temperatures of approximately 55° C, any prolonged exposure (longer than a few hours) at this temperature and up to around 70° C death is almost inevitable. The opposite condition, when body temperature decreases below normal levels, is known as hypothermia.
Whereas an organism that thermoregulates is one that keeps its core body temperature within certain limits, a thermoconformer is subject to changes in body temperature according to changes in the temperature outside of its body. It was not until the introduction of thermometersthat any exact data on the temperature of animals could be obtained. It was then found that local differences were present, since heat production and heat loss vary considerably in different parts of the body, although the circulation of the blood tends to bring about a mean temperature of the internal parts.
Wiki User
∙ 6y agoFor conductive and convective heat transfer, the rate of heat transfer is proportional to the the temperature difference; if you double the difference you will double the rate of heat transfer.
For radiative heat transfer, the rate of heat transfer is proportional to the difference of the 4th powers of the absolute temperatures.
Wiki User
∙ 12y agomy name is michaela
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How would it be possible that there could be high temperature but no heat transfer?
Heat transfer will only occur if there is a difference in temperatures. So if an object is high temperature but the surrounding area is also high temperature there will be no heat transfer.
Heat is the transfer of thermal energy because of difference?
Heat is not the transfer of thermal energy. Heat is the thermal energy. What drives itacross a boundary between substances or objects is a difference in their temperatures.
Does the change in temperature of an object affect how much heat it can transfer to another object?
The temperature of an object affects how much heat can be transferred. This is because if the object to which heat is transferred has high temperature then there will not be much heat transfer. Heat flows from a body of higher temperature to lower temperature.
Why is energy transferred as heat between two objects at the same temperature?
It's not. A difference in temperature is required in order to drive the transfer of heat.
What is the reason for heat transfer from one substance to another difference in mass?
Difference in temperature is the reason heat transfers from one substance to another.
Does temperature difference does not affect heat transfer rate?
yes
How does temperature affect the rate of heat transfer?
For conductive and convective heat transfer, the rate of heat transfer is proportional to the the temperature difference; if you double the difference you will double the rate of heat transfer. For radiative heat transfer, the rate of heat transfer is proportional to the difference of the 4th powers of the absolute temperatures.
How would it be possible that there could be high temperature but no heat transfer?
Heat transfer will only occur if there is a difference in temperatures. So if an object is high temperature but the surrounding area is also high temperature there will be no heat transfer.
Heat is the transfer of thermal energy because of difference?
Heat is not the transfer of thermal energy. Heat is the thermal energy. What drives itacross a boundary between substances or objects is a difference in their temperatures.
Does the change in temperature of an object affect how much heat it can transfer to another object?
The temperature of an object affects how much heat can be transferred. This is because if the object to which heat is transferred has high temperature then there will not be much heat transfer. Heat flows from a body of higher temperature to lower temperature.
Where can heat transfer happen?
any where but condition is there should be temperature difference
Why is energy transferred as heat between two objects at the same temperature?
It's not. A difference in temperature is required in order to drive the transfer of heat.
What is the reason for heat transfer from one substance to another difference in mass?
Difference in temperature is the reason heat transfers from one substance to another.
Transfer of energy from one object to another as a result of difference in temperature?
Heat energy.
At what speed does heat radiation travel?
Heat transfer rate in radiation is proportional to the fourth power of the temperature difference
What is the difference between heat transfer and mass transfer?
Heat transfer deals with the movement of heat and temperature gradients. The three types of heat transfer are conduction, convection, and radiation. Mass transfer deals with concentrations of a particular substance. Types of mass transfer include diffusion and convection.
conclusion and recommendation of lab heat transfer of first law termodynamics?
Conclusion The lab experiment on heat transfer of first law thermodynamics has demonstrated that heat energy can be transferred from one body to another through conduction, convection, and radiation. The data collected in this experiment shows that the rate of heat transfer is determined by the thermal conductivity of the material, the surface area of the material, and the temperature difference between the materials. The results of the experiment suggest that the higher the thermal conductivity of the material, the greater the rate of heat transfer. In addition, the higher the temperature difference between the two materials, the more heat will be transferred. Furthermore, the larger the surface area of the material, the greater the rate of heat transfer. Recommendation This lab experiment has shown that heat transfer is a complex process and can be further explored by performing more experiments with different materials and different temperature differences. In addition, this experiment has shown that the factors which affect heat transfer, such as thermal conductivity and surface area, can be manipulated to increase or decrease the rate of heat transfer. Therefore, it is recommended that further experiments should be conducted in order to further understand how these factors interact to affect the rate of heat transfer. Additionally, it is recommended that experiments should be conducted to explore how different materials and different temperature differences affect the rate of heat transfer. Finally, it is recommended that experiments should be conducted to explore how different materials and different surface areas affect the rate of heat transfer.
