Physics, 08.10.2019 06:00, beluvangel418

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.

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 14:30, darceline1574

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil

Answers: 2

continue

Physics, 22.06.2019 16:30, aliviadushane

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is

Answers: 2

continue

Physics, 22.06.2019 18:00, cratsley321

By what primary heat transfer mechanism does the sun warm the earth?

Answers: 1

continue

Physics, 22.06.2019 18:30, dbryrob2557

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km. h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.

Answers: 2

continue

Do you know the correct answer?

At steady state, a heat pump provides energy by heat transfer at the rate of 25,000 btu/h to maintai...