The operation performed on the vapor flowing above the feed stage to the top exit of a distillation common is:

wet steam at 20 bar with 97%. quality is passed through a throttling valve and expands to 1 bar pressure. Calculate the temperature of the Steam that departs from the adiabatic expansion valve.

A horizontal coil of water is circulated through it, which is heated from the outside by high-temperature flue gases. While passing through the coil, water changes condition from liquid at 200 kPa and 800C to vapour at 100 kPa and 1250C, depending on the pressure and temperature. The speed at which it enters is 3 ms-1, and the speed at which it exits is 200 ms-1. Calculate the amount of heat that has been passed through the coil per unit mass of water. The following are the enthalpies of the entrance and outflow streams: The energy input is 334.9 kJ kg-1, while the energy output is 2726.5 KJ kg-1 Includo the following Information: the givon, the roquirod, and the solution to the problom above.

One pound mole of CH4. per minute is fed to a heat exchanger. How many kilograms is this per second?

The reduction in condensing pressure makes the system: c) has no effect on efficiency b) less efficient a) more efficient Which state of the refrigerant, in the evaporator, offers the greatest heat absorption capacity? a) Steam b) liquid c) superheated steam High compression ratios mean that system performance: a) increase b) decrease c) remain constant

In a shower, cold water at 10 oC flowing at a rate of 5 kg/min is mixed with hot waterat 60 oC flowing at a rate of 2 kg/min. What is the exit temperature of the mixture?

Find the pressure at point A. Water temp. = 150 F A Kerosene 2 in Mercury 5 in 7 in→

A double pipe heat exchanger is to be designed to heat 1 kg/s of a cold fluid from 30°C to 60°C using 2 kg/s of a hot fluid at 100°C. The two streams have equal specific heat capacities and overall heat transfer coefficient. Calculate the ratio of heat transfer areas of counter current to co-current. a) 1.142 b) 0.875 c) 0.927 d) 1.077

3. In an adiabatic cooling tower 500 kg/min hot water, is to be cooled from 50°C to 35°C by using air with 25°C dry bulb temperature and 15°C wet bulb temperature. The air leaves the tower with 32°C dry bulb temperature and 85% relative humidity. a. Show the points of inlet and outlet air on the PSYCHROMETRIC chart given below. Read the followings: Absolute humidity and Relative humidity of the inlet air. Absolute humidity and wet bulb temperature of the exit air. b. Calculate the volumetric flow rate of the air used. c. Why do we use cooling towers in process plant?

A stream of ammonia is cooled from 100oC to 20oC at a rate of 180 kg/hr in the tube side of a double-pipe counter-flow heat exchanger. Water enters the heat exchanger at 10oC at a rate of 250 kg/hr. The outside diameter of the inner tube is 3 cm and the length of the pipe is 7m. Using the log-mean temperature difference, calculate the overall heat transfer coefficient (U) for the heat exchanger. Determine the log-mean temperature difference. Determine the heat transfer coefficient for the heat exchanger.   Cp for ammonia is 5234J/kgK and cp for water is 4180J/kgK.