The efficiency of the Brayton cycle increases with an increase in the pressure ratio across the compressor. What limits our use of this tactic to increase cycle efficiency? What trade-offs have to be made?

plase typr the answer no hand writing

Construct a sketch to show the working of an air handler of the blow-through type with cooling and
heating coils in series? Clearly label all parts and components and briefly explain its working?

Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of 100 m3/s at 0.8 bar, 280 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 1800 K. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. For a regenerator effectiveness of 86%, determine: (a) the net power developed, in MW. (b) the rate of heat addition in the combustor, in MW. (c) the percent thermal efficiency of the cycle.

A mud logger places a sample of calcium carbide in the drillstring when a connection is made. The calcium carbide reacts with the mud to form acetylene gas. The acetylene gas is detected by a gas detector at the shale shaker after pumping 4, 500 strokes. The drill string is composed of 9, 500 ft of 5-in, 19.5-lbm/ft drill pipe and 500 ft of drill collars having an ID of 2.875 in. The pump is a double acting duplex pump with 6 in liners, 2-in rods, and 14 in strokes and operates in a volumetric efficiency of 80%.

a.Estimate the pump cycle required to move the gas from the surface to the bit.

b.Estimate the number of pump cycles required to move the gas from the bit to the shale shaker.

c.If the penetration rate of the bit is 20 ft/hr and the pump speed is 60 cycle/min, how many feet are drilled by the bit before the formation gas expelled from the rock destroyed by the bit travels from the bit from the surface?

(with steps please)

The displacement volume of an internal combustion engine is 2.19 liters. The processes within each cylinder of the engine are modeled as an air-standard Diesel cycle with a cutoff ratio of 2.5. The state of the air at the beginning of compression is fixed by p1 = 1.6 bar, T1 = 325 K and V1 = 2.36 liters. If the cycle is executed 2100 times per min, determine: a) the compression ratio, b) the net work per cycle, in kJ, c) the maximum temperature, in K, d) the power developed by the engine, in kW, e) and the thermal efficiency.

Stainless Steel spoons are tested after manufacture with each test taking 10 minutes. If the plant makes 200,000 units a day and the quality Page 117-Sep-2018 assurance technologist recommends testing 1% of them to failure, is this sampling plan sensible? What would you recommend? Why?

Draw block diagram of a sun tracking system for a solar power system. Also mention the component clearly.

Note: give a small description of its working.

Pressurized water (pin= 10 bar, Tin= 110°C) enters the bottom of an L= 10-m-long vertical tube of diameter D= 88 mm at a mass flow rate of m˙⁢= 1 kg/s. The tube is located inside a combustion chamber, resulting in heat transfer to the tube. Superheated steam exits the top of the tube at Pout= 7 bar, Tout= 600°C. Determine the change in the rate at which the following quantities enter and exit the tube: (1) the combined thermal and flow work, (2) the mechanical energy, and (3) the total energy of the water. Also, (4) determine the heat transfer rate, q.
Hint: Relevant properties may be obtained from a thermodynamics text.

ANSWERE ALL BELOW Qs PLEASE!!

a) What is the outlet specific volume, in m³/kg?

b) What is the outlet velocity, in m/s?

c) What is the change in specific enthalpy from inlet to outlet, in kJ/kg?

d) Solve for the rate of change in the combined thermal and flow work energy from inlet to outlet, in MW.

e) Solve for the rate of change in mechanical energy from inlet to outlet, in MW.

f) What is the total heat transfer rate from the pipe, in MW?

What factors, not including thermal mismatch to the substrate, contribute to a change in gauge response as the temperature of the gauge changes?

How do the required CL and AOA for a Piper M350 at 4,000 lbs change with changes in airspeed? (Provide specific examples)

What happens if the required CL is larger than CL_max of your airfoil, and what speed regime is usually associated with that condition?

The spring-loaded piston–cylinder device shown in the figure is filled with 0.55 kg of water vapor that is initially at 4 MPa and 400°C. Initially, the spring exerts no force against the piston. The spring constant in the spring force relation F = kx is k = 0.9 kN/cm and the piston diameter is D = 20 cm. The water now undergoes a process until its volume is one-half of the original volume. Calculate the final temperature and the specific enthalpy of the water. Use data from the steam tables

For liquids, the viscosity decreases as the temperature increases. For gases, the viscosity increases as the temperature increases. Your objective is to provide an explanation for these trends. You may do internet research, but your response must be in your own words and references provided. Your response must be typed and grammatically correct.

If the cells operate with 18% efficiency, and there is no mismatch loss among the cells, calculate the overall module efficiency if the round cells are used. Assume a PV Module is to have dimensions of 37.5 X 63.2 in. Also assume that 8-in. round cells are available

A local firm manufactures children's toys. The project demand over the next four months for one particular model of toy robot is

Assume that a normal workday is 8 hours. Hiring cost are $350 per worker and firing cost (including severance) are 850 per worker. Holding cost are $4 per aggergate unit held per month. Assume that it requires an average of 1 hour and 40 minutes for one worker to assemble one toy. Shortages are not permitted. Assime that the ending inventory for June was 600 of these toys and the mangager wishes to have at least 800 units on hand at the end of October. Assume that the current workforce level is 35 workers. Find the optimal plan by formulating as a linear program.