Thermal Power Engineering

Air and fuel enter a furnace used for home heating. The air has an enthalpy of 320 kJ/kg and the fuel has an enthalpy of 43027 kJ/kg. The gases leaving the furnace has an enthalpy of 616 kJ/kg. There are 17 kgair/kgfuel, water circulated through the wall furnace receiving heat. The hose required 17.02 kW of heat, what is the fuel consumption per day. (41 kg/day)

Thermal Power Engineering

feedwater enters a boiler drum at a pressure of 4826 kPa abs, 148.9°C and a specific volume of 0.00109 m^3/kg. steam leaves the superheater of the boiler at 4137 kPa abs, 287.8°C and a specific volume of 0.0546 m^3/kg. calculate: a. the flow work in kj/kg associated with the water entering the boiler drum, and b. the flow work in kj/kg associated with the steam leaving the superheater

Thermal Power Engineering

What’s the basic difference between fossil fuel burning power plants and geothermal power plants?

Thermal Power Engineering

Many household use common hot water heating system which delivers hot water to the radiators at 60.0'c. Then, the water leaves the radiators at 28.0'c. New, heating system utilizes steam which at atm pressure condenses in the radiator. Then, the condensed steam leaves the radiators at 35.0'c. How many kg of steam must be produced the same amount of heat supplied by 1.00 kg of hot water?

Thermal Power Engineering

Find the pitch, diameter and desirable pressure drop through a straight orifice - type distributor plate for bubbling fluid bed (4.5 x 2.5m^2) with fluidizing solids of mean size 220x10^-6m at 5m/s at 850oC. The depth of the fluidized bed is 1.0m and the air entering the plenum is 27oC. Voidage at minimum fluidization is 0.47.

Thermal Power Engineering

Comparing the efficiency of the real power plant cycle with the ideal Rankine cycle shows:
A.
the efficiency of the real power plant cycle is equal to the ideal Rankine cycle
B.
the efficiency of the real power plant cycle is higher than the Carnot cycle
C.
the efficiency of the real power plant cycle is less than the ideal Rankine cycle
D.
the efficiency of the real power plant cycle is higher than the ideal Rankine cycle

Thermal Power Engineering

gas having a volume of 0.05 m 3 and pressure of 6.9 bar expands reversibly in a cylinder behind a piston according to lawpv1. 2 = constant until the volume is 0.08 m3. Calculate the work done by the gas. Also sketch the process on a p-v diagram. [Ans.15300 Nm]

Thermal Power Engineering

Q1. A sample of partially saturated sand had a volume of 95 x 10-6 m3 and a mass of 0.2 kg. After oven drying, its mass was 0.19 kg. Calculate the bulk density, dry density, saturated density, porosity, void ratio, moisture content, degree of saturation and air void ratio of the sample. Assume Gs = 2.6.

Thermal Power Engineering

Argon is contained in a 3 m
3
rigid volume at 75 C and 400 kPa. Calculate the heat transfer
needed to increase the pressure to 800 kPa.

Thermal Power Engineering

Air is compresses in a two-stage vane-type compressor from 1.013 bar to.
8.75 bar Using the data below, and assuming equal pressure ratios in each
stage, that compression is complete in each stage that the machine
operates in an ideal manner and is uncooled apart from the intercooler,
calculate:
(i) the power required.
(ii) The volume flow rate measured at the delivery pressure.