The thermal efficiency of a general heat engine

Assignment Help Mechanical Engineering

Reference no: EM13714114

The thermal efficiency of a general heat engine is 40 percent, and it produces a net work of 30hp. At what rate is heat transferred to this engine in kj/s?

Reference no: EM13714114

Questions Cloud

Determine factor of saftey of gears in bending : A 17-tooth 20 normal pressure-angle helical pinion with a right-hand helix angle of 30 rotates at 1800 rev/min when transmitting 4 hp to a 52-tooth helical gear. The normal diametrical pitch is 10 teeth/in, the face width is 1.5 in, and the set has a..

Emperor penguin in antarctica may be modeled as cylinder : An Emperor penguin in Antarctica may be modeled as a cylinder 1m high with a diameter of 0.2m. The male Emperor penguin warms his egg for sixty-four days during the Antarctic winter (no solar input), in deep sub-zero temperatures. During this time th..

Estimate the interior convective heat transfer coefficient : Hot water at 90 degrees C flows through a carbon-steel tube whose ID is 2 cm and OD is 3 cm, at a bulk velocity of 30 m/s. The length of the tube is 10 m. The exterior natural convection coefficient is 8 W/m2*K and the ambient temperature is 25 degre..

Magnitude plot-make sure to calculate zeta for complex peaks : Sketch Bode plots for the following systems. Use asymptotes, but locate at least one point in the Magnitude plot and make sure to calculate zeta for complex peaks.

The thermal efficiency of a general heat engine : The thermal efficiency of a general heat engine is 40 percent, and it produces a net work of 30hp. At what rate is heat transferred to this engine in kj/s?

Determine the power required to run the heat pump : A heat pump operating at steady state provides 36,000 kJ/hr to maintain the temperature in a building at 22C. The heat pump operates with a coefficient of performance 75% that of a reversible cycle operating between the same thermal reservoirs.

Determine the size of the rivets to be used for the joint : The bracket plate is 25 mm thick. All rivets are to be of the same size. Load on the bracket, P = 50 kN ; rivet spacing, C = 100 mm; load arm, e = 400 mm. Permissible shear stress is 65 MPa and crushing stress is 120 MPa. Determine the size of the ri..

Determine the volume of metal removed in an iron sheet : Determine the amount of energy (Joules) and the power (Watts) required drilling a hole of 0.2 (5.08 mm) inches in diameter in a Titanium sheet 0.2 (5.08 mm) inches thick. Determine the volume of metal removed in an iron sheet if the power required fo..

Isentropic ally through a convergent-divergent nozzle : Air at a stagnation pressure 700kPa flows isentropic ally through a convergent-divergent nozzle. The design pressure at the nozzle exit is 56 kPa. If the back pressure is raised gradually, thereby creating a shock in the divergent portion of the nozz..

User Account

All Pages