Define Dry ice. Explain the working principle of production of dry ice. Show the schematic diagram and P-h diagram.
Design the process of liquification of natural gas with neat sketch.
Calculate the sound power level of i) a whisper that emits a power 1MW ii) a rock engine that emits 0.10 MW.
What is dry ice? Explain the working principle of production of dry ice using schematic process diagram and p-h diagram.
Design the process of liquefaction of natural gas with neat sketch.
What are the advantages of Claude system over Linde system for liquefaction of air?
Give an illustration on Primary and Secondary refrigerant. What are the desirable proportions of an ideal refrigerant?
Define "Cryogenics". Mention its application. Why dry ice, despite its high manufacturing cost. is used as a refrigerant?
Write short notes on the following:
Mention five cryogenic fluids with their boiling temperature in °C.
What are the application and limitation of low temperature refrigeration system?
Determine the power required per 1000 kg of dry ice produced using single compression and also the COP of the plant. The pressures are in snow chamber 1.03 kg/cm² and in condenser 69.35 kg/cm². Dry saturated carbon dioxide enters the throttle valve and dry saturated gas leaves the snow chamber. Dry saturated solid ice is collected from snow chamber. Make-up carbon dioxide gas is supplied at 28°C.
Explain the working principle of production of dry Ice with net sketch the process. Also draw and level the P-h diagram.
Dry air at 20°C and 1 bar is to be liquefied by the simple Linde method. The air is isothermally compressed at 20°C to 170 bar. The make-up air is supplied to the system at 20°C and 1 bar. Find the yield of liquid air in kg per kg of dry air compressed and the temperature of air before throttling.