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A gas refrigeration system using air as the working fluid has a pressure ratio of 5. Air enters the compressor at 0°C. The high-pressure air is cooled to 35°C by rejecting heat to the surroundings. The refrigerant leaves the turbine at -80°C and then it absorbs heat from the refrigerated space before entering the regenerator. The mass flow rate of air is 0.4 kg/s. Assuming isentropic efficiencies of 80 percent for the compressor and 85 percent for the turbine and using constant specific heats at room temperature, determine (a) the effectiveness of the regenerator, (b) the rate of heat removal from the refrigerated space, and (c) the COP of the cycle. Also, determine (d) the refrigeration load and the COP if this system operated on the simple gas refrigeration cycle. Use the same compressor inlet temperature as given, the same turbine inlet temperature as calculated, and the same compressor and turbine efficiencies.
Evaluate evidence that would specify the existence of a risk or risks - Analyse the implications of the risk and the effect on life, property and activities
you will explore a game through the lens set up by the weekly material.games of all kinds are the result of a process
Describe concurrent engineering
The first assignment involves you becoming familiar with the different types of urban change experienced in cities and how urban change is managed by government (Especially local and state levels).
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CEE 357 Win 2014 HW#1: What volume of seawater would have to be processed to recover one kilogram of silver, assuming an extraction process with 100% efficiency?
I would like to use the each following methods to answer the (same question) as attached : VALUE MEASUREMENT MODELS GOAL PROGRAMMING OUTRANKING (ELECTRE I)
a. Find the maximum mass flow rate, and exit pressure under design conditions. b. What is the exit pressure for a normal shock wave to appear at the inlet of the duct. c. What is the exit pressure for a normal shock wave to appear at the middle of th..
The methodology in summary form is to design and implement improvements to the nickel-iron battery. This is your basic methodology, which needs more detail in the type of tests you will perform.
Explain the factors that affect the amount of primary settlement and the rate of primary settlement expected in a layer of soil.
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