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?

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.

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

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]

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.

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.

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.

A double pipe heat exchanger has an effectiveness of 0.5 when the flow is
counter- current and the thermal capacity of one fluid is twice that of the
other fluid. Calculate the effectiveness of the heat exchanger if the direction
of flow of one of the fluids is reversed with the same mass flow rates as
before?

A rankine cycle has the following operating conditions, steam pressure, 2.5 MPa, steam temperature, 280°C, Exhaust pressure 0.026 MPa, indicated steam rate, 5.45 kg/kwh, mechanical efficiency, 90%. For ideal cycle and engine, calculate (a) thermal efficiency, (b) The engine steam rate, (c) The actual condition of exhaust steam, and (d) The steam flow rate in kg/h for 1 Mw generator output at 94% efficiency. Ans. (a) 28.6%, 28.5%; (b) 4.69 kg/kwh; (c) 86.33%; (d) 6447 kg/h

i want to know about all dimensions of solar flat plate collector for modeling in cad software.
please help me with it. i want it for capacity of 200 L.