Engineering, 29.09.2019 02:20 carleygalloway103
Atypical heat pump may heat a home at a rate of 40,000 btu/hr. if a heat pump has a coefficient of performance of 3.6, how much power does it need to run, in hp? according to delmarva power, the average cost of electricity is 14 cents per kilowatt hour. how much would it cost to run the heat pump all winter (say, 2000 hours)?
Answers: 2
=912.8dollars
Another question on Engineering
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:10
Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
Answers: 1
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
You know the right answer?
Atypical heat pump may heat a home at a rate of 40,000 btu/hr. if a heat pump has a coefficient of p...
Questions
Mathematics, 31.03.2021 01:40
Mathematics, 31.03.2021 01:40
Advanced Placement (AP), 31.03.2021 01:40
Mathematics, 31.03.2021 01:40
History, 31.03.2021 01:40
Mathematics, 31.03.2021 01:40
Mathematics, 31.03.2021 01:40
History, 31.03.2021 01:40
Mathematics, 31.03.2021 01:40
Mathematics, 31.03.2021 01:40
