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$''$Intercooling during multistaging compression is effective with $NH_3$ as refrigerant than $R_{12}''$. Comment.
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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find: i. Mass of air bled from cooling turbine to be used for regenerative cooling ii. Power required for maintaining cabin at required condition iii. C.O.P. of system
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Define Energy Efficiency Ratio. Write a note on star rating of BEE.
refrigeration and air conditioning updated 8.4 years ago by ddigantarroy • 0
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What are the advantages of air refrigeration for cooling of aircraft?
refrigeration and air conditioning updated 8.4 years ago by ddigantarroy • 0
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Write note on Designation of Refrigerant.
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Explain in brief an adiabatic saturation process. Represent the same on a Psychrometric Chart.
refrigeration and air conditioning updated 4.3 years ago by phenjoisilab • 0
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What is the function of a flash inter-cooler? Why it is not preferred for R-12 refrigerant?
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Discuss the static regain method for duct design
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Derive an expression for COP of an ideal Bell Coleman cycle in terms of pressure ratio.
refrigeration and air conditioning updated 4.3 years ago by phenjoisilab • 0
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an airplane using 20 TR bootstrap air refrigeration system has ambient conditions of 0.9 bar and 15C. Ram air pressure after isotropic compression is 1.1 bar.
refrigeration and air conditioning updated 4.3 years ago by phenjoisilab • 0
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Discuss the effect of evaporator and condenser pressures on the performance of a Vapour Compression Refrigeration System.
refrigeration and air conditioning updated 9.3 years ago by gauravthikrul • 0
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A refrigeration machine using R-12 as refrigerant operates between pressures 2.5 bar and 9 bar. The vapour entering the compressor is dry saturated and there is no subcooling in the condenser. If the
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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A sample of moist air has a dry bulb temperature of 25C and a relative humidity of 50%. the barometric pressure is 740 mm of Hg. without using psychrometric chart, calculate:
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Explain with schematic the working of a refrigeration system with a single evaporator and two stage compression system, with a water intercooler and flash intercooler interposed between two stages.
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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The following data are given for the space to be air conditioned: Outside air conditions = 40 C DBT and 50% RH,inside design conditions= 26 C DBT and 50% RH 50%, Apparatus Dew point = 10 C;
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Types of Cooling Tower
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Methods of defrosting.
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Write a short note on Thermoacoustic refrigeration
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Variable refrigerant flow systems
refrigeration and air conditioning updated 4.4 years ago by krithikkm200 • 10
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Define: i)Relative humidity ii)Ton of refrigeration iii)Degree of saturation iv)Dew point temperature v)Coefficient of performance
refrigeration and air conditioning updated 9.3 years ago by gauravthikrul • 0
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Draw P-H and T-S diagram when the vapours are superheated at the end of compression and with under cooling of liquid
refrigeration and air conditioning updated 8.4 years ago by ddigantarroy • 0
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atmospheric air at 10 C WBT and 15 C DBT enters a heating coil whose temperature is 40 C DBT. the bypass factor of heating coil is 0.4. Determine DBT, WBT and RH of the air leaving the coil
refrigeration and air conditioning updated 4.3 years ago by phenjoisilab • 0
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For a sample of air having 22 C DBT relative humidity 30% at barometric pressure of 760 mm of Hg. Calculate i) Vapour pressure ii) Vapour density iii) Humidity ratio iv)Enthalpy
refrigeration and air conditioning updated 9.3 years ago by gauravthikrul • 0
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Describe vapour absorption refrigerant system using three fluids.
refrigeration and air conditioning updated 9.3 years ago by gauravthikrul • 0
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An air cooling system for a jet plane cock pit operates on the simple cycle. The cockpit is to be maintained at 25 C. The ambient air pressure and temperature are 0.35 bar and -15 C respectively.
refrigeration and air conditioning updated 9.2 years ago by gauravthikrul • 0
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