Mechanical Engineering Exam > Mechanical Engineering Videos > Topper Handwritten Notes & Videos for GATE ME > Relation Between Heat and Temperature Difference HMT Tutorial- 8, Heat and Mass Transfer, GATE
Relation Between Heat and Temperature Difference HMT Tutorial- 8, Heat and Mass Transfer, GATE Video Lecture | Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering
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FAQs on Relation Between Heat and Temperature Difference HMT Tutorial- 8, Heat and Mass Transfer, GATE Video Lecture - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering
| 1. What is the relationship between heat and temperature difference? |  |
Ans. The relationship between heat and temperature difference is governed by the principle of heat transfer. Heat transfer occurs from a region of higher temperature to a region of lower temperature, and the amount of heat transferred is directly proportional to the temperature difference between the two regions. This relationship is described by the equation Q = mcΔT, where Q is the heat transferred, m is the mass of the substance, c is the specific heat capacity, and ΔT is the temperature difference.
| 2. How does heat transfer occur? | |
Ans. Heat transfer can occur by three mechanisms: conduction, convection, and radiation. Conduction is the transfer of heat through direct contact between particles in a solid or between adjacent solids. Convection is the transfer of heat through the movement of fluids, such as air or water. Radiation is the transfer of heat through electromagnetic waves, and it does not require a medium for transfer.
| 3. What factors affect the rate of heat transfer? | |
Ans. The rate of heat transfer is influenced by several factors. The temperature difference between the two regions, the surface area of contact, the thermal conductivity of the materials involved, and the distance over which heat must be transferred all affect the rate of heat transfer. Additionally, the presence of insulation or the flow of fluids can also impact the rate of heat transfer.
| 4. How does temperature difference affect heat transfer? | |
Ans. Temperature difference plays a crucial role in determining the rate of heat transfer. The greater the temperature difference between two regions, the higher the rate of heat transfer. This is because a larger temperature difference provides more energy for heat transfer to occur. However, as the temperature difference decreases, the rate of heat transfer also decreases.
| 5. What are some practical applications of heat and temperature difference? | |
Ans. Heat and temperature difference have numerous practical applications. They are essential in various industries, such as HVAC (heating, ventilation, and air conditioning), where heat transfer is utilized for cooling or heating purposes. Heat transfer is also crucial in cooking, refrigeration, power generation, and thermal management in electronic devices. Understanding the relationship between heat and temperature difference is vital for efficient design and operation in these applications.
Text Transcript from Video
all right my dear so in this video I'll
share with you relation between hate
Azula heat and temperature defense in
case of conduction in case of convection
and of course in case of radiation in
these three cases how shall with you the
relation between heat and temperature
defense so let's go for it so what is it
if not what the relation that is Q in
case of conduction Q is directly
proportional to temperature defense as
well as in the case of convection q is
equal to this oh I let me share with you
in case of conduction we are having a
four-year law that is equal to minus ka
DT upon DX in convection we are having
Newton's law of cooling that is a Q
equal to H a delta T but in radiation we
are having stefan-boltzmann law Stefan
Boltzmann law according to this law q is
directly proportional to t 1 to the
power 4 minus T to the power 4 that
means Q is equal to Sigma in T 1 to the
power 4 minus T 2 to the power 4 this is
known as Boltzmann law and this these
three relations these radiations are
most important whenever you are studying
about at Mt then you need we will have
to be always deal with these three this
the formula as well as relation so this
is most important and one more important
thing is that this TV these teeth are in
Kelvin always Wilber that if you are
appearing for Cate examination then you
need to understand this my dear we have
to consider unit of these in Kelvin
always one more thing if you know if the
temperature difference is sufficient or
higher much more higher then we
preferred radiation then conduction or
convection process for at a spot of heat
we used that radiation I hope you
understand this
intercept between conduction convection
radiation for heat as well as
temperature difference thanks for
watching see you soon in my next video
bye bye
share with you relation between hate
Azula heat and temperature defense in
case of conduction in case of convection
and of course in case of radiation in
these three cases how shall with you the
relation between heat and temperature
defense so let's go for it so what is it
if not what the relation that is Q in
case of conduction Q is directly
proportional to temperature defense as
well as in the case of convection q is
equal to this oh I let me share with you
in case of conduction we are having a
four-year law that is equal to minus ka
DT upon DX in convection we are having
Newton's law of cooling that is a Q
equal to H a delta T but in radiation we
are having stefan-boltzmann law Stefan
Boltzmann law according to this law q is
directly proportional to t 1 to the
power 4 minus T to the power 4 that
means Q is equal to Sigma in T 1 to the
power 4 minus T 2 to the power 4 this is
known as Boltzmann law and this these
three relations these radiations are
most important whenever you are studying
about at Mt then you need we will have
to be always deal with these three this
the formula as well as relation so this
is most important and one more important
thing is that this TV these teeth are in
Kelvin always Wilber that if you are
appearing for Cate examination then you
need to understand this my dear we have
to consider unit of these in Kelvin
always one more thing if you know if the
temperature difference is sufficient or
higher much more higher then we
preferred radiation then conduction or
convection process for at a spot of heat
we used that radiation I hope you
understand this
intercept between conduction convection
radiation for heat as well as
temperature difference thanks for
watching see you soon in my next video
bye bye
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Dec 24, 2024 Last updated |
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