The engine that powers a crane burns fuel at a flame temperature of 1970°C. It is cooled by 25°C air. The crane lifts a 2195 kg steel girder 19 m upward. How much heat energy is transferred to the engine by burning fuel if the engine is 32% as efficient as a Carnot engine?
The engine that powers a crane burns fuel at a flame temperature of 1970°C. It is...
please I need help with this thermodynamics problem 2. (11 marks total) A Diesel engine burns liquid Diesel fuel with a composition of 86% C, 14% H by mass, a higher heating value of 45.6 MJ/kg, and a lower heating value of 42.5 MJ/kg The engine uses 30 kg of air for combustion per kg of fuel burned. (a) (4 marks) Determine the quantities of product species (CO2, H2O, etc.) produced in units of kmols of product per kg fuel....
1. Calculate the primary NAAQS concentration limit for 502 in units of ug/m' at standard temperature and pressure (STP:T - 25*C, P = 1 atm). 2. Fuel X9-6000 is 95.8% efficient in an airplane engine. The unburned fuel leaves as VOCS in the exhaust. For each kg of fuel X9-6000 (Molecular Weight, MW-98), the engine exhausts 20 kg of gases (MW = 28 g/mol). What is the fraction of VOCs in the exhaust (ppm)? ncinerator burns 30 tonnes of plastic...
A steel block of mass 6.4 kg is originally at a temperature of 18°C and 1 atm. A steel block of mass 6.4 kg is originally at a temperature of 18°C and 1 atm. It is then heated to a temperature of 68°C without any change in pressure. The specific heat of steel is 452 J/(kg . °C), its density is 7.85 x 103 kq/m3, and the coefficient of linear expansion is 12 x 10-6/oc. (a) Determine the work done...
4. Air enters the intake manifold at 25°C and 100 kPa on an SI engine utilizing throttle body injection. Liquid methanol, CH40, is injected into the intake manifold at an equivalence ratio of 1.1. Assume all the fuel evaporates in the manifold before entering the cylinder. The temperature of the mixture at the entrance to the cylinder is 5°C. a) Calculate how much heat transfer, per kg of air (i.e. kJ/kg air) must be entering the intake manifold. In your...
Question 10 5 pts A steam engine converts 1640 million Btu input energy obtained by burning a fuel into mechanical energy. The steam goes into the turbine at 210 °C and condensed water leaves the turbine at 21 °C. Assuming that the turbine operates as an ideal Carnot engine determine the mechanical energy output in MWh. Question 11 5 pts Which ones below are the benefits of hydroelectric power generation? O Hydro electric power don't depend on market conditions. Hydroelectric...
DIESel Ehgine Power Plant) a) Write a short note (not more than 10 lines in each ase) Write a short note (not more than 10 lines in each case) for the following: () diesel engine, (ii) for Supercharger and turbocharger, (ii) Heat (energy) balance sheet of a Cooling system of a diesel power plant b) From the data given below, calculate: () indicated power, (i) brake power, and (ii) 20 minutes at full load. drawn heat balance sheet for a...
Quantitative: In the 1950s liquid hydrogen was considered as a fuel for a new type of aircraft being developed, the SR-71 Blackbird (shown in Figure 1). Figure 1: The SR-71 Blackbird Early research on the project focused on which fuel to use for the Blackbird. Pratt & Whitney had a J-57 engine that was designed for kerosene and being considered for implementation on the Blackbird. The J-57 only took 5 months to convert to running on liquid hydrogen, however tests...
nominal temperature of 660K and heptane 3. Assume that air enters a combustor at a (C-H16) enters at the reference temperature (298.15 K) creating products of combustion leaving at a nominal temperature of 1540 K. Values given in the table below are in units of kJ/kmol. Values are also given for the heat of formation. In the case of the H2O this would be for a gaseous product. (a) Write a reaction equation for heptane burning with air with c*100%...
Please help solve these parts. Thanks After leaving the furnace at temperature 900°C, steel balls of radius 1.5 cm are being placed in a moving belt of speed u=1 cm/s and cooled slowly in air (Too = 30°C, h = 100 W/m²K); these balls are then collected Furnace Air, 35°C after moving a distance of L = 4.5 m. Choose steel: ks = 900°C 50 = 0.465 kg.K Air: ka = 0.025 Pa = 1.2800 kg,ca = 0.718 k] The...
pts per question) 1. A 2 m piston cylinder device contains nitroen gas at 200 kPa and 350K. Now heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kPa and volume is maintained at same. The boundary work done during this process is (a) 1080 kJ (b) 840 k (c)240 k 2. A heat engine receives heat from a source at 727°C and rejiects the waste heat to a sink at 27°C,...