Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
At steady state, a heat pump provides energy by heat transfer at the rate of 25,000 Btu/h to maintain a dwelling at 708F on a day when the outside temperature is 308F. The power input to the heat pump is 4.5 hp. Determine
(a) the coefficient of performance of the heat pump.
(b) the coefficient of performance of a reversible heat pump operating between hot and cold reservoirs at 708F and 308F, respectively, and the corresponding rate at which energy would be provided by heat transfer to the dwelling for a power input of 4.5 hp.
A closed, rigid tank is filled with water. Initially, the tank holds 9.9 ft^3 saturated vapor and 0.1 ft^3 saturated liquid, each at 212F. The water is heated until the tank contains only saturated vapor.
Saturated isobutane vapor at 320 K is contained in a piston-cylinder assembly. It is expanded to 3 bar by a reversible isothermal process. At 320 K, the vapor pressure of isobutane is 6.243 bar. Using the truncated virial equation of state, i.e. with..
a boy tosses a ball in the vertical direction off the side of a cliff. if the initial velocity of the ball is 15ms
a 12-ft3 rigid tank contains refrigerant-134a at 40 psia and 55 percent quality. heat is transferred now to the
Silicone rubber has a Poisson’s ratio of 0.4 Consider a silicone rubber drain hose for a surgical procedure. The hose has an outer diameter of 4mm and a wall thickness of 0.5mm. How much does the lumen of the catheter constrict if the hose is stretch..
At the proportional limit, a 1.5-in. gage length of a 0.375-in.-diameter alloy rod has elongated 0.0081 in. and the diameter has been reduced 0.00071 in. The total tension force on the rod was 5.62 kips.
How long will it take for the surface of the rod to reach 175°C, the temperature above which the special coating will cure? Generate a plot of the time to reach 175°C as a function of air velocity for 5 V 50 m/s.
On which of these systems would you expect slip to ?rst occur as the applied stresses increased? Assuming slip on that system, determine the ratios of the strains, ε2/ε1 and ε3/ε1.
Explain whether the following situations and should be modeled as closed systems, control volume systems, or transient systems. Convert the following temperatures to °F, °C, K, R (4 pts) a. 98.6 °F b. 298 K c. 5715 °F e. 100 °C. Convert the following..
consider the combustion of butane c4h10 in the gas phase with the theoretical amount of air. the products and reactants
packages are thrown down an incline at a with a velocitynbspof 1 ms. the packages slide along the surface abc to
write the temperature of a cooling body as an exponential function of time. Is Newton's Law of Cooling still widely accepted? Are there any substitutes?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd