Evaluate the convection coefficient at the instant of time

Assignment Help Mechanical Engineering

Reference no: EM131281641

The free convection heat transfer coefficient on a thin hot vertical plate suspended in still air can be determined from observations of the change in plate temperature with time as it cools. Assuming the plate is isothermal and radiation exchange with its surroundings is negligible, evaluate the convection coefficient at the instant of time when the plate temperature is 225°C and the change in plate temperature with time (dT/dt) is 0.022 K/s. The ambient air temperature is 25°C and the plate measures 0.3 × 0.3 m with a mass of 3.75 kg and a specific heat of 2770 J/kg · K.

Reference no: EM131281641

Questions Cloud

Direction of change for the quantity : Can we determine with certainly the direction of change for the quantity? For the price? Explain briefly.

Describe a wan in terms of uses, ownership and span. : Describe a MAN network, in terms of its uses, ownership, and span (how much area is covered).Describe a WAN in terms of uses, ownership and span.

Calculate convection coefficients for flows of water and air : Calculate and compare the convection coefficients for the flows of water and air.

Above or below equilibrium for long : Explain why the price in a free market will not remain above or below equilibrium for long, unless there is outside interference.

Evaluate the convection coefficient at the instant of time : evaluate the convection coefficient at the instant of time when the plate temperature is 225°C and the change in plate temperature with time (dT/dt) is 0.022 K/s. The ambient air temperature is 25°C and the plate measures 0.3 × 0.3 m with a mass o..

Should the union bring the issue to arbitration : The union has asked you for advice on how to challenge the testing program. - Should the union bring the issue to arbitration? The NLRB? The courts? Advise the union and explain.

What is total daily service cost for the single teller model : Bank Boston has a branch at Bryant College. The branch is busiest at the beginning of the college year when freshmen and transfer students open accounts. What is the total daily service cost for the single teller model?

What is the surface temperature of the transmission : If the transmission efficiency is η = 0.93 and airflow over the case corresponds to T∞ = 30°C and h = 200 W/m2 · K, what is the surface temperature of the transmission?

High effort on preparing the test : Write down the game in strategic form. What is the equilibrium? Show your steps. The supervisor wishes the employees putting high effort on preparing the test. Will he be satisfied?

User Account

All Pages