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Determine the change in entropy when 2 kg of a gas at 277 K is heated in a closed, rigid container to a temperature of 368 K. Take the specific heat at constant volume to be 1.42 KJ/Kg.K
A packed tower is designed to recover 98% CO2 from a gas mixture containing 10 % CO2 and 90 % air using water . A relation y = 14 x can be used for equilibrium conditions where y is kg CO2 / kg dry air and x is kg CO2 /kg water. The water to gas r..
Design a column for this separation. The column will operate at essentially atmospheric pressure. Use a reflux ratio 1.5 times the minimum.
Overall heat transfer coefficient is 3000 W m2 K. Calculate the heating surface required in calandra in m2 and the economy of the evaporator.
a gas present in a cylinder fitted with a frictionless piston expands against a constant pressure of 1 atm from a volume of 2 liters to a volume of 6 liters. it absorbs 800 j heat from surroundigs .
Suppose the Chinese subcontractor is willing to share the economies-of-scale benefits it might achieve in production and offers an incremental quantity discount on the variable cost. The subcontractor now charges $6 per unit for the first 0.5 mill..
in heat transfer terms , the surface temperature rises above the wet bulb surface ceases to behave as a wet surface - the surface temperature rises to dry bulb temperature and air as the moisture level fa..
Write down any four challenges that are faced by researchers in nanotechnology?
Low temperature reservoir at reservoir at a rate of 300 j/s . what is the temperature of the high temperature reservoir.
determine the time for the moisture to penetrate to the center of the slab (2 in. from either face). Assume a diffusivity of water in the wood as 8.3?10?6 cm2/s.
A brief current pulse of duration 50 ms and amplitude 1 mA is presented to a cell membrane with time constant 10 ms. Find the cell membrane voltage output.
Determine the flow rate of the refrigerant, the amount of work in the compressors, and the heat loads in all heat exchangers.
Steam enters a cooling tower at 200 °C and exits at 60 °C. Cooling is supplied by the surroundings which are assumed to be at 30 °C. The process takes place under atmospheric pressure (1 bar).
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