Femap Nastran pressure vessel analysis series 3 of 5. Free edges, hole sizing, stitching, elements Скачать
Femap Nastran - Meshing, fixing meshing issues with congruency and coincident node elimination Скачать
Femap Nastran - beginner's tutorial on loads, constraints and analysis. Not realistic results! Скачать
Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.2 MPa Скачать
Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.4 Mpa Скачать
Consider a two-stage cascade refrigeration system operating between the pressure limits of 0.8 Скачать
A heat pump that operates on the ideal vapor compression cycle with refrigerant-134a is used to heat Скачать
Refrigerant-134a enters the condenser of a residentialheat pump at 800 kPa and 50 C at a rate of Скачать
An actual refrigerator operates on the vapor compression refrigeration cycle with refrigerant-22 Скачать
The manufacturer of an air conditioner claims a seasonal energy efficiency ratio (SEER) of 16 Скачать
A refrigerator uses refrigerant-134a as the working fluid and operates on the ideal vapor-compress Скачать
Refrigerant-134a enters the compressor of a refrigerator at 100 kPa and -20 C at a rate of 0.5 Скачать
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerate Скачать
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and -5 C Скачать
Consider a 300 kJ/min refrigeration system that operates on an ideal vapor-compression refrigeration Скачать
An ideal vapor-compression refrigeration cycle thatuses refrigerant-134a as its working fluid Скачать
A refrigerator operates on the ideal vapor-compressionrefrigeration cycle and uses refrigerant-134a Скачать
Refrigerant-134a enters the condenser of a steady-flow Carnot refrigerator as a saturated vapor at Скачать
Complete the table below on the basis of the conservationof energy principle for a closed system. Скачать
A piston–cylinder device contains 50 kg of water at 250 kPa and 25 C. The cross-sectional area Скачать
An ideal gas undergoes two processes in a piston-cylinder device as follows:1-2 Polytropic compressi Скачать
0.75 kg of water that is initially at 0.5 MPa and 30 percent quality occupies a spring-loaded piston Скачать
A piston–cylinder device contains 0.15 kg of air initially at 2 MPa and 350 C. The air is first Скачать
Hydrogen is contained in a piston–cylinder device at 14.7 psia and 15 ft^3 . At this state a linear Скачать
A piston–cylinder device initially contains 0.4 kgof nitrogen gas at 160 kPa and 140 C. The nitrogen Скачать
The rear window of an automobile is defogged by attaching a thin, transparent, film-type heating Скачать
A new building to be located in a cold climate is being designed with a basement that has an L=200mm Скачать
Consider the plane wall of Figure 3.1, separating hot and cold fluids at temperatures T ∾,1 and Скачать
During an expansion process the pressure of a gas changes from 15 to 100 psia according to the rel Скачать
A gas is compressed from an initial volume of 0.42 m3 to a final volume of 0.12 m3. During the quasi Скачать
A mass of 1.5 kg of air at 120 kPa and 24 C is contained in a gas-tight frictionless piston cylinder Скачать
Calculate the efficiency of the collector described in Problem 1 on March 1 at a latitude of 40°N Скачать
Calculate the heat-removal factor for a collector having an overall heat-loss coefficient of 6 W/m2K Скачать
A house has a composite wall of wood, fiberglass insulation, and plaster board, as indicated in the Скачать
Argon is compressed in a polytropic process with n=1.2 from 120 kPa and 10 C to 800 kPa in a piston Скачать
A rigid tank initially contains 1.4-kg saturated liquidwater at 200 C. At this state, 25 percent Скачать
A rigid vessel contains 8 kg of refrigerant-134a at 500 kPa and 120 C. Determine the volume of the Скачать
How much error would one expect in determiningthe specific enthalpy by applying the incompressible Скачать
Consider an experimental flat-plate collector with A = 4 m^2 being tested during the evening in Скачать
Consider a 5.6 m^2 collector with F’ = 0.893, Uc = 3.85 W/m^2-K ( Ta)s = 0.79 and a flow rate Скачать
A PV battery system has an end-to-end efficiency of 77%. The system is used to run an all-AC load Скачать
Estimate the daily load and the peak power required by a PV system that have the following equipment Скачать
A piston–cylinder device contains 0.6 kg of steam at 200 C and 0.5 MPa. Steam is cooled at constant Скачать
Superheated water vapor at 180 psia and 500 F is allowed to cool at constant volume until the temp Скачать
At what efficiency is a PV array running if insolation on the collector is 650 W/m2, the total Скачать
Saturated steam coming off the turbine of a steam power plant at 40 C condenses on the outside Скачать
In the central receiver concept of solar energy collection, a large number of heliostats (reflectors Скачать
The normal spectral absorptivity of a SiO–Al selective surface can be approximated as shown by the Скачать
An overhead 25-m-long, uninsulated industrial steam pipe of 100-mm diameter is routed through Скачать
What is the annual loan payment on a loan of $20,000 which is borrowed at 8.5% for 15 years if all Скачать
Compute the present worth of a cost that is expected to be $5700 in 10 years if the market rate Скачать
Water at a rate of 45,500 kg/h is heated from 80 to 150C in a heat exchanger having two shell passes Скачать
The condenser of a steam power plant contains N=1000 brass tubes (kt=110 W/m K) each of inner and Скачать
A dormitory at a large university, built 50 years ago, has exterior walls constructed of Ls =25mm Скачать
A steel tube (k=50 W/m K) of inner and outer diameters Di=20 mm and Do =26 mm, respectively, is used Скачать
In a fire-tube boiler, hot products of combustion flowing through an array of thin-walled tubes are Скачать
A rigid tank with a volume of 1.8 m3 contains 15 kg ofsaturated liquid–vapor mixture of water at 90C Скачать
Water initially at 200 kPa and 300 C is contained in a piston-cylinder device fitted with stops Скачать
A square isothermal chip is of width w=5 mm on a side and is mounted in a substrate such that its Скачать
What is the thickness required of a masonry wall having thermal conductivity 0.75 W/m K if the heat Скачать
A glass window of width W=1 m and height H=2 m is 5 mm thick and has a thermal conductivity of k=1.4 Скачать
The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k = 0.029 W/mK Скачать
Consider both hydrodynamically and thermally fully developed steady laminar flow, constant property Скачать
In a certain viscous incompressible flow field with zero body forces the velocity components are u= Скачать
The exposed surface of a plane wall of thermal conductivity k is subjected to microwave radiation Скачать
Consider a steady laminar and fully developed flow through a straight pipe of circular cross-section Скачать
Vertical flow between two parallel plates. A viscous, incompressible fluid flow between two infinite Скачать
Find the velocity profile for a falling film of water over a solid vertical wall, Shear stress, Vmax Скачать
Solve the NON-Homogeneous system of differential equations. Use variation of parameters method Скачать
Solve the system of differential equations. Use eigen values and eigen vectors. x'=-5y; y'=2x+2y Скачать
Estimate visual range. The historic equation for estimating visibility is the Koschmeider equation: Скачать
The NAAQS for fine particles (PM2.5, annual average) is 12 μg/m3. Every time you breathe, you take Скачать
Industrial representatives claim that the NAAQS for S02 is so low that one exceeds it if one strikes Скачать
Convert Euler-Cauchy equation to constant coefficient linear ODE. x^3y"+x^2y'-4xy=1+xcos(lnx) Скачать