subject
Engineering, 12.12.2019 01:31 zulaykaalex

Aheat pump with a cop of 2.8 is used to heat an air-tight house. when running, the heat pump consumes 5 kw of power. if the temperature in the house is 7°c when the heat pump is turned on, how long will it take for the heat pump to raise the temperature of the house to 22°c? is this answer realistic or optimistic? explain. assume the entire mass within the house (air, furniture, etc.) is equivalent to 1500 kg of air.

ansver
Answers: 3

Another question on Engineering

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
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
Answers: 1
question
Engineering, 04.07.2019 18:20
Find the minimum film thickness for a journal bearing with the data below. shaft diameter, d-50 mm, clearance ratio, cdratio? 0.001, shaft speed, n 2000 rpm; bearing length. i 200 mm; eccentricity ration, ? -0.55. ( note, cdratio-ca/d) the minimum film thickness is um
Answers: 2
question
Engineering, 04.07.2019 18:20
For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.
Answers: 1
You know the right answer?
Aheat pump with a cop of 2.8 is used to heat an air-tight house. when running, the heat pump consume...
Questions
question
History, 24.04.2020 20:46
question
Physics, 24.04.2020 20:47
question
English, 24.04.2020 20:47
Questions on the website: 13722363