Is there a way to design an experiment to calculate the total amount of weight or force a material (such as fabrics/toilet paper) can support before breaking that does not revolve around the usage of tensile strength test or extremely large masses? Can we design an experiment that can be small scaled?

Cantor Corp. is the country’s third largest manufacturer of garden furniture and accessories. They are planning to sell a new oak and cast iron bench that will be available in a choice of three colors. Part of the manufacturing process requires the iron handrails to be spray-painted. As this is a new process for the company, they will have to create workstations adequate to the task. Their first step is to design a local exhaust ventilation system. 1. What are the major elements of such a system? 2. Which hood type should they use for their local exhaust ventilation system and why 3. What special room conditions are critical for this type of hood? 4. In general, what are the other types of hoods utilized in a local ventilation system? An important step in the system design is to determine whether an air cleaner is needed to reduce the amount of contaminants discharged to the environment. 5. What factors determine the type of cleaner needed? 6. What type would you select for the spray painting job? Management is concerned about their ability to supply adequate makeup air so that they don’t become air bound. 7. What are the important features to keep in mind when designing a makeup air system?

Saturated water vapor at 300°F enters a compressor operating at steady state with a mass flow rate of 5 lb/s and is compressed adiabatically to 650 lbf/in.²


If the power input is 2150 hp, determine for the compressor:

(a) the percent isentropic compressor efficiency and

(b) the rate of entropy production, in hp/°R.

Ignore kinetic and potential energy effects.

Design an ECBM system with methane recovery, electricity generation, and carbon sequestration for a coal field with 17 billion m3 methane capacity and a yield of 280 m3/tonne CO2 sequestered. The methane (assume it is pure CH4 and ignore impurities) is delivered to an advanced technology-generating plant where it is mixed with a stream of pure oxygen to deliver electricity for the grid, CO2 for sequestration, and water as a by-product. Of the energy available in the methane, 40% is delivered to the grid in the form of electricity. The remainder is dissipated in losses in the plant and to supply energy needed for the operation (methane, CO2 and water pumping, CO2 injection, and so on). All CO2 from the generating plant is injected into the coal field, so that there are no emissions of CO2 to the atmosphere. Additional CO2 is transported by pipeline from other sources located at a distance. The plant is planned to operate for 40 years at a constant output, after which all the methane will have been withdrawn. How much electricity does the plant produce per year? What is the net amount of CO2 sequestered, after taking into account the fraction that is derived from carbon that was under the ground in the first place?

Consider a steam power plant operating on the simple ideal Rankine cycle. Steam enters the turbine at 15 MPa and 600°C. The steam condenses in the condenser at 10 kPa. Use the EES software to study the effects of the following cases on the cycle performance and to sketch the T-s diagram for each case:

Plot the variation of the cycle thermal efficiency with the turbine isentropic efficiency. Take the isentropic efficiency of the turbine in the range 70% to 100%.

If the cycle is modified to the ideal reheat Rankine cycle with the same pressure limits and same maximum temperature, Plot the variation of the steam quality at the turbine exit and the thermal efficiency with the reheat pressure. Take the range of the reheat pressure from 3 to 8 MPa.

If the cycle is modified to the ideal regenerative Rankine cycle with the same pressure limits and same maximum temperature, plot the variation of the thermal efficiency with the extraction (bleeding) pressure ranging from 1 to 3 MPa, with a step of 0.5 MPa.

The heat is supplied to the boiler from a heat source (e.g. furnace) of a constant temperature. For the same pressure limits and same maximum temperature of the cycle, plot the variation of the second law efficiency with the heat source temperature ranging from 700 to 1200 K. In addition, show the variations of the exergy destroyed in each component of the cycle (boiler, turbine, condenser, pump) with the heat source temperature and identify the rooms of improvement in the second-law efficiency

it should be solved by ees.....

A Rankine cycle (not an ideal cycle) generates steam (H2O, Water) at 100 bars
and 640 oC (state 3) and the turbine-exhaust pressure is 0.08 bar (state 4). The enthalpy value
of the turbine outlet is 2577.0 kJ/kg (state 4). Assuming the state of the inlet of pump is a
saturated liquid and kinetic and potential energy changes are negligible, a pump operates
isentropically and it has a steady state mass flow rate of 23,740 kg/h through it. Determine
a. The temperature of the inlet pump (state 1), in oC,
b. The enthalpy of the inlet pump (state 1), in kJ/kg,
c. The entropy of the inlet pump (state 1), in kJ/(kg*K),
d. The entropy of the inlet boiler (state 2), kJ/(kg*K),
e. The enthalpy of the inlet boiler (state 2), kJ/kg,
f. The temperature of the inlet boiler (state 2), oC,
g. The enthalpy of the inlet turbine (state 3), kJ/kg,
h. The entropy of the inlet turbine (state 3), kJ/(kg*K),
i. The entropy of the inlet condenser (state 4), kJ/(kg*K),
j. The temperature of the inlet condenser (state 4), oC,
k. The adiabatic efficiency of the turbine, in percent, %
l. The power input into the pump, MW,
m. The rate of heat transfer into the working fluid as it passes through the boiler, MW,
n. The power output by the turbine, MW,
o. The rate of heat transfer into the working fluid as it passes through the condenser, MW,
p. The thermal efficiency, %

The strains of prismatic beam made of extruded polycarbonate were measured using multiple strain gauges. When loaded at room temperature, normal strains are 200us and 100us, while the shear strain is 45us. The modulus of elasticity is 2.38GPa, the mass density is 1200kg/m3 , the glass transition temperature is 147°C, and the shear modulus is 0.96GPa. Determine all six independent components of the stress tensor. Clearly list all your assumptions.

Complete combustion of 1 kmol of PROPANE GAS with 0% excess air produces (?????) kmol of carbon-dioxide gas. (enter a decimal number)

A C-D nozzle is to be designed to produce a flight Mach number of 3.0 for the atmospheric conditions (pressure and temperature) at 15 km altitude in the test section of a supersonic wind tunnel. The diameter of the test section is 10 cm. Assume the gas has Y(gamma) = 1.4 and R = 2.077 kJ/kg*K, determine (a) the mass flow rate that must be provided, (b) the nozzle throat area, (c) the reservoir temperature and (d) the reservoir pressure.

Determine the final temperature and pressure of a mixture of CO₂ (MW=44) and nitrogen if 3 kg of CO₂ at 20°C and 1.5 MPa is mixed with 1 kg of nitrogen at 100°C and 0.75 MPa. Use c_v of CO₂ as 0.656 kJ/kg K and c_v of nitrogen as 0.752 kJ/kg K. The process can be considered to be adiabatic.

For storage options a, b, and c, what volume of storage tank for hydrogen would be needed for a hydrogen fuel cell car to have the same delivered transport energy (that is, total vehicle-km of travel) as a conventional car with a full 50 litre petrol tank (note that the actual volume of the tank is more than 50 litre). a- If the hydrogen is stored as compressed gas at a pressure of 350 bar (1 bar = 101 kPa) b- If the hydrogen is stored cryogenically as a liquid c- If the hydrogen is stored in a metal hydride in solid form Important assumption and information required to answer this question: • The energy content of hydrogen (HHV) is 142 MJ/kg (~40 kWh/kg)The average energy efficiency of the fuel cells used is 44% (based on HHV), and that of the electric motors 86%. • Note that the following gravimetric and volumetric energy storage figures are based on 50% fuel cell energy efficiency, but the energy efficiency that you need to use (based on question 2) in order to answer this question is 44%, HHV. Assumptions for the volumetric and gravimetric electrical energy densities of different hydrogen energy storage options based on 50% electrical energy efficiency (HHV) for the fuel cell: - High-pressure hydrogen at 350 bar: 0.75 kWhe/kg and 0.35 kWhe/litre - Cryogenic hydrogen storage 1.46 kWhe/kg and 0.89 kWhe/litre - Metal hydride 0.5 kWhe/kg and 0.5 kWhe/litre.

nswer the following questions:

1. What is PFCU functions and State the advantage and Disadvantages of PFCU?

2. What do you understand about fly by wire?

Answer the questions in paragraph form.

Saturated water vapor at 300°F enters a compressor operating at steady state with a mass flow rate of 5 lb/s and is compressed adiabatically to 750 lbf/in.²


If the power input is 2150 hp, determine for the compressor:

(a) the percent isentropic compressor efficiency and

(b) the rate of entropy production, in hp/°R.

Ignore kinetic and potential energy effects.

Objective question :-

The function of air conditioning system is

(A) Cooling and humidification
(B) Cooling and dehumidification
(C) Heating and humidification
(D) Heating and dehumidification