Heat transfer

Anonymous

Aug 5

#heat-transfer #thermodynamics #physics

List three main difference between changing by induction and changing by conduction?

2 1

Anonymous

Jun 5

#heat #heat-transfer #fluids-mechanics #thermodynamics #physics

What are limitations of the Newtown law of cooling?

2 1

what-are-limitations-of-the-newtown-law-of-cooling

2 0

Anonymous

Mar 23

#heat-transfer #thermodynamics #physics

What quantity of heat will be necessary to change 2kg of ice at 0c⁰ to water at 10c⁰ specific latent heat of fusion of ice =3.36*10⁵jkg-¹k-¹ at specific heat capacity of water 4200jkg-¹k-¹??

Physics

1 1

Anonymous

Mar 23

#heat-transfer #thermodynamics #physics

Calculate the specific heat capacity of the materials for which the heat supply mass and temperature rise are .i 2.5210⁴j ,20kii 810³j 500g from 20c⁰ to 60c⁰iii 9.45 *10³j 150g from 15c⁰ to 45c⁰ ??

Physics

1 1

Anonymous

Mar 7

#heat-transfer #mechanical-engineering

Distinguish between thin and thick cylinders. And explain the term logging as applied to heat transfer?

Thermal dynamics

1 1

Anonymous

Mar 6

#volume #heat-transfer #pressure #internal-energy #temperature-change #thermodynamics

Calculate max temp reached, change in internal energy, heat transfer. When vol=0.2m^3, at 1.2 bars, 60°c compressed 12bars temp 270°c at constant vol. P becomes twice at the end(cp=1.072kj,R=294j/kgk?

P= pressure

1 1

Anonymous

Mar 6

#heat-transfer #thermodynamics #physics

Calculate maximum temperature reached and change in internal energy, heat transfer during process?

Vol is 0.2m^3 of mixture of fuel and air at 1.2 bar and 60°c compressed until it's pressure becomes 12bars with Temp of 270°c. It's then ignited suddenly at constant volume and it's pressure becomes twice the pressure at the end of compression.( Cp=1.072kj/kg and R=294j/kgk.

2 1

Anonymous

Mar 4

#heat-transfer #thermodynamics #physics

What must be the initial velocity of a lead bullet at 25 degrees Celsius so that the heat developed when it is brought to rest will be sufficient to melt it at 327.3 degrees Celsius ?

1 1

Anonymous

Mar 3

#heat-transfer #thermodynamics #physics

A400g aluminum container containing 300g of water at 20 degrees Celsius is refrigerated to 0 degrees Celsius in 80 minutes. Determine the rate per minute at which heat is removed from the container ?

1 1

Anonymous

Feb 28

#heat-transfer #science #physics

Conduction as a method of heat transfer ?

1 1

Anonymous

Feb 28

#heat-transfer #thermodynamics #physics

Sensible heat ?

1 1

Tumsime Godfrey

Jan 3

#heat-transfer #thermodynamics #physics

If the temperature differenc across a 43cm thick dry sand soil is 23, calculate the thermal flux and total heat transfer in three hour under steady stateAssume thermal conductivity of dry sand 0.27w?

1 1

Anonymous

Jan 2

#heat-transfer #chemistry #thermodynamics

The molar heat of solution of NaOH is -445.1KJ/mol. In a certain experiment,5g of NaOH is completely dissolved in 1L of H2O at 20°C in foam cup calorimeter. Assuming no heat loss , Tf= 33.2°C, verify?

Chem

1 1

Anonymous

Jan 2

#heat-transfer #chemistry #thermodynamics

The molar heat of solution of NaOH is -445.1KJ/mol. in a certain experiment,5g of NaOH is completely dissolved in 1L of water at 20°C in foam cup calorimeter. Assuming no heat loss, calculate Tf?

Chemistry

1 1

#heat-transfer

Questions

Anonymous

List three main difference between changing by induction and changing by conduction?

Anonymous

What are limitations of the Newtown law of cooling?

Anonymous

What quantity of heat will be necessary to change 2kg of ice at 0c⁰ to water at 10c⁰ specific latent heat of fusion of ice =3.36*10⁵jkg-¹k-¹ at specific heat capacity of water 4200jkg-¹k-¹??

Anonymous

Calculate the specific heat capacity of the materials for which the heat supply mass and temperature rise are .i 2.52*10⁴j ,20kii 8*10³j 500g from 20c⁰ to 60c⁰iii 9.45 *10³j 150g from 15c⁰ to 45c⁰ ??

Anonymous

Distinguish between thin and thick cylinders. And explain the term logging as applied to heat transfer?

Anonymous

Calculate max temp reached, change in internal energy, heat transfer. When vol=0.2m^3, at 1.2 bars, 60°c compressed 12bars temp 270°c at constant vol. P becomes twice at the end(cp=1.072kj,R=294j/kgk?

Anonymous

Calculate maximum temperature reached and change in internal energy, heat transfer during process?

Anonymous

What must be the initial velocity of a lead bullet at 25 degrees Celsius so that the heat developed when it is brought to rest will be sufficient to melt it at 327.3 degrees Celsius ?

Anonymous

A400g aluminum container containing 300g of water at 20 degrees Celsius is refrigerated to 0 degrees Celsius in 80 minutes. Determine the rate per minute at which heat is removed from the container ?

Anonymous

Conduction as a method of heat transfer ?

Anonymous

Sensible heat ?

Tumsime Godfrey

If the temperature differenc across a 43cm thick dry sand soil is 23, calculate the thermal flux and total heat transfer in three hour under steady stateAssume thermal conductivity of dry sand 0.27w?

Anonymous

The molar heat of solution of NaOH is -445.1KJ/mol. In a certain experiment,5g of NaOH is completely dissolved in 1L of H2O at 20°C in foam cup calorimeter. Assuming no heat loss , Tf= 33.2°C, verify?

Anonymous

The molar heat of solution of NaOH is -445.1KJ/mol. in a certain experiment,5g of NaOH is completely dissolved in 1L of water at 20°C in foam cup calorimeter. Assuming no heat loss, calculate Tf?

Anonymous

Calculate the specific heat capacity of the materials for which the heat supply mass and temperature rise are .i 2.5210⁴j ,20kii 810³j 500g from 20c⁰ to 60c⁰iii 9.45 *10³j 150g from 15c⁰ to 45c⁰ ??