Question

For the same compression ratio and heat addition, the efficiency order of otto, dual and diesel cycle is

Answer 1

Answer:

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Answer 2

Diesel cycle

Explanation:

• Otto cycle is more efficient than Diesel cycle for a given compression ratio.  For constant maximum pressure and warmth input, the air standard efficiency of the gas power cycle is within the order.
• Although for a given compression ratio the Otto cycle has higher efficiency, because the diesel motor is operated to higher compression ratio, the engine can even have higher efficiency than an Otto cycle when both are operated at compression ratios that may be achieved in practice.
• Since all the cycles (i.e. Otto, diesel and dual) their heat at the identical specific volume, process line from state 4 to 1, the amount of warmth rejected from each cycle is represented by the suitable area under the road 4 to 1 on the T-S diagram.
• Thus, the Otto cycle is that the most effective and therefore the Diesel cycle is that the least efficient of the three cycles.