Question

Q1)In an air standard diesel cycle, the compression ratio is 16 and at the beginning of the compression, the temperature is 15-degree Celsius and pressure is 0.21Mpa. Heat is added until the temperature at the end of the constant pressure process is 1480-degree Celsius. Calculate
i) The cut off ratio
ii) The heat supplied per kg of air
iii) The cycle efficiency

Answer 1

Answer:

results shows that if compression ratio is less than certain value, the net work output first decreases and then starts to increase as the cut-off ratio increases. While if compression ratio exceeds certain value, the increase of cut-off ratio make the net work output bigge