Example: A 40 kg steel casting ( Cp = 0.5 kJ/kg.K) at a temperature of 450°C is quenched in 150 kg of oil (Cp 2.5kJ/kg.K) at 25°C. if there are no heat losses, what is the change in entropy of the (a) casting (b) oil (c) both considered together?

Q: Steady-state temperatures at selected nodal points of the symmetrical section of a flow channel are…

A: Given, The convection coefficient, hi= 500 W/m2.K ho= 250 W/m2.K

Q: Convert the following temperature. a. T=-40⁰F to ˚R, K, ˚C b. ∆T=-40⁰F to ˚R, K, ˚C

A:

Q: How many heat are needed to change 50.0 grams of ice at -15.0 °C to steam at 120.0 °C?

A: Given: mass of ice = 50g=50g×kg1000g=0.05kg temperature of ice = -15°C=-15+273K=258K temperature of…

Q: QE/ Consider the flow of a gas with density 1 kg/m³, viscosity 1.5 x 105 kg/(m.s), specific heat Cp…

A:

Q: (2.11) A graphite heat exchanger is constructed by drilling circular channels in a solid block of…

A:

Q: Record the T1 and T2 values. How much energy is required to heat 65.0 g ice to from 0 Celsius to 79…

A: Mass (m) = 65 gm T1 = 0 C = 273 K T2 = 79 C = 352 K.  specific heat capacity = 4.184 J/g.C To find :…

Q: asses through a heater-expander and emerges at 39.516 bar and 420.45 ℃. There is no work into or out…

A:

Q: For a single phase system, what happens to its internal energy when the temperature goes up? Why is…

A: For a single phase system, internal energy is a function of temperature. the relation is as follows:

Q: 10.33 Saturated steam at 0.2 bar condenses with a convec- tion coefficient of 6000 W/m²2 · K on the…

A: The objective of the question is to estimate the steam condensation rate per unit length of the…