subject
Engineering, 14.11.2019 20:31 mzyjohnson47

Aheat pump cycle is used to maintain the interior of a building at 21°c. at steady state, the heat pump receives energy by heat transfer from well water at 9°c and discharges energy by heat transfer to the building at a rate of 120,000 kj/h. over a period of 14 days, an electric meter records that 1490 kw ⋅ h of electricity is provided to the heat pump. determine: 1. the amount of energy that the heat pump receives over the 14-day period from the well water by heat transfer, in kj. 2. the heat pump’s coefficient of performance. 3. the coefficient of performance of a reversible heat pump cycle operating between hot and cold reservoirs at 21°c and 9°c.

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
question
Engineering, 04.07.2019 18:10
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
question
Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
question
Engineering, 04.07.2019 18:20
Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false
Answers: 2
You know the right answer?
Aheat pump cycle is used to maintain the interior of a building at 21°c. at steady state, the heat p...
Questions
question
Chemistry, 05.05.2021 19:00
question
Mathematics, 05.05.2021 19:00
question
Mathematics, 05.05.2021 19:00
question
English, 05.05.2021 19:00
question
Mathematics, 05.05.2021 19:00