Steam engine with incomplete expansion receives saturated steam at 1.04 Mpa, expands it to 0.105 Mpa where release occurs. Exhaust is to a condenser at 40C. The actual engine uses 6070 kg/h of steam; it has a brake engine efficiency of 60% and a mechanical efficiency of 85%. The electric generator which it drives has an efficiency of 92%. (a) For the ideal engine, find the thermal efficiency and the mep.
Provide a complete given and computation. Include all the decimals.
Steam engine with incomplete expansion receives saturated steam at 1.04 Mpa, expands it to 0.105 Mpa where release occurs. Exhaust is to a condenser at 40C. The actual engine uses 6070 kg/h of steam; it has a brake engine efficiency of 60% and a
(a) For the ideal engine, find the thermal efficiency and the mep.
For the actual engine, determine (b) the brake work in kW and the brake thermal efficiency,
(c) the indicated work in kW, indicated thermal efficiency and indicated steam rate,
(d) the combined thermal efficiency and the combined steam rate.
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