A system is proposed to generate power from wastewater of 54C. If the ambient temperature is 23C, what is the highest thermal efficiency of this system in %?

A vertical piston-cylinder assembly containing water is being heated on a stove. During this process, 140kJ of heat is transferred to the water’s expansion process (because of the heat addition), -20 kJ of work is done. Also, there is 50 kJ heat loss from the assembly. What is the water’s change of internal energy because of the heat addition process? Draw the diagram.

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A heat pump shown is driven by 3.0 MW motor and receives heat from a source at 60C and deliver energy to a boiler that operates at constant pressure and saturation temperature of 140 C. The water enters the boiler as saturated liquid and leaves as saturated vapor at the same temperature. The heat pump operates with a COP (coefficient of performance) that is 60% of a Carnot heat pump COP. Find : 1- the maximum mass flow rate of water the system can deliver 2- the heat received from the source Q, boiler mter TH VHP - w T 60°C

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Pineapple fruits with a mass of 500 kg are supplied to a cold storage at 20 C. The cold storage is maintained at 5 C and the fruits get cooled to a storage temperature in 10 hours. The latent heat of freezing is 105 kJ/kg and the specific heat of fruit is 1.256 kJ/kg.K. Find the refrigeration capacity of the plant.

A heat engine draws 1200 kW from a hot reservoir at 800K and rejects 600 KW to a cold reservoir at 375K a) Show using the Clausius Inequality whether that the process is possibie b) What is the efficiency of the process 6) f the process were reversible what would the efficiency be if the engine draws the same 1200 kW from the hot reservoir and what would be the heat rejected

What is the the answer to the Thermodynamics in engineering i upload. Thanks

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A tank of water has a shaft rotating at 60 rpm with a torque of 40 N-m that is stirring the water. A heater is also present that operates at 120V and draws 4A of current. Heat is then removed from the water such the total energy content of the water is constant. How much heat is removed?