Please see the attached file for the fully formatted problem(s).

Problem 1:

> A piece of wood is 2ft x 2ft x 0.25 ft ----- the hot plate is also 2ft x 2ft square
> A wet piece of wood is placed on a steam heated hot plate ---- the dry weight of the wood is 10 lbs ----- the weight of the water in the wood is 6.5 lbs
> 450 psi saturated steam is used to heat the hot plate ---- the steam is approx. 456 degrees F and has an enthalpy of approx. 1202 btus/lb
> Given are Cp values for wood at .57 btus/lb/oF; water vapor at .46 btus/lb/oF; and water liquid at 1.00 btu's/lb/oF
> Assume no air flow over the wood
> If the steam flow to the hot plate is 25 lbs steam per minute and it is assumed that heat transfer from the hot plate to the wood is 100% efficient:

a) Determine the total energy need to heat the wood to completely bone dry?
b) Determine the time needed to completely dry the wood?
c) Determine how much condensate would be produced on the discharge end of the hot plate (assuming no other radiative or convective losses)
d) From a Physics stand point, would the total energy needed in this case be the amount of work performed?? If not, how would I calculate the work?

Steam inlet condensate out

Hot Plate

Problem 2:

> Exactly the same as above but:

- in this case the heat transfer from the hot plate to the wood is only 70% efficient

... hot water is to be used as the energy source in ... the condenser temperature is 40°C. Calculate the heat transfers in ...Calculate the work in kJ/kg at the pump and ...

... be 23 J. This means that the heat absorbed in ... We can also calculate this from the internal energy change ... We have calculated that the change in internal energy...

...Calculate the maximum speed of the bob ... gravitational potential energy, kinetic energy ,Celsius temperature ... Kelvin temperature, specific heat, heat and Ideal gas ...

... The solution shows how to calculate the standard enthalpy ... 7) Using the following information calculate the heat...heat of reaction is calculated as )( ) ( ∆H 0 ...

... To calculate the heat released multiply the heat capacity by the ... U = q (calculated above ... Essentially, what I did was divide the heat generated by the moles of ...

...calculate the change in internal energy of the gas and ... You can also use the "temodynamic calculator" found on ... conditions, Q=0 (there is no heat transfer from ...

...Calculate iv) the final pressure, v) final temperature, vi) the work done if ... pass through origin, vii) the change in internal energy and the heat transfer. ...

... Other part of the problem was to calculate internal energy, entropy, work and heat for ideal monatomic gas if we have reversible and irreversible ...

... The energy corresponding to a shell is calculated using E n ...Calculate the energy difference for a transition in the ... A system gives off 500 kJ of heat and does ...