ASSIGNMENT 4 Essay Example

  1. Determining increase in length

ASSIGNMENT 4

ASSIGNMENT 4 1

  1. Determining heat energy requirement

Total energy = Energy for raising ice temperature from -120C to 00C+ Heat of fusion

ASSIGNMENT 4 2

ASSIGNMENT 4 3

  1. Determining gas pressure.

From pressure law ASSIGNMENT 4 4

ASSIGNMENT 4 5

ASSIGNMENT 4 6

ASSIGNMENT 4 7220C =273+22=295K

ASSIGNMENT 4 8

ASSIGNMENT 4 9

  1. Pressure determination of heliem

Atomic mass of helium=4.003

Molar mass = 4.003g

Number of moles in 250g= 250/4.003= 62.5moles

ASSIGNMENT 4 10

Amount of energy produced by fuel= (1.25x1000x36 000)=45 000MJ/hr

Power rating of boiler =Power available in stream

Enthalpy of steam h = 3177kJ/kg

Power available in stream ASSIGNMENT 4 11

Thermal efficiency of boiler ASSIGNMENT 4 12