The energy generated within the house from people lights

Assignment Help Mechanical Engineering
Reference no: EM13630641

A heat pump keeps the air temperature in a house at a temperature of 22.5 oC. The house is losing heat to the outside air through the walls and the windows at a rate of 61,500 kJ/h while the energy generated within the house from people, lights, and appliances amounts to 4,500 kJ/h. For a COP of 2.5, determine the power input to the heat pump in kW.

Reference no: EM13630641

Questions Cloud

Determine a the initial and final temperatures b the mass : a mass of 5kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder device at 125kpa. initially
The hall-effect is used to determine the mobility of holes : the hall-effect is used to determine the mobility of holes in a p-type silicon. assume the bar resistivity is 20000 ohm
Based on inernal energy considerations what dislocation : based on inernal energy considerations what dislocation density in cu is needed to make the crystalline form of cu
Cld water cp 418 kjkgc leading to a shower enters a : cold water cp 4.18 kjkgc leading to a shower enters a well-insulated thin walled double-pipe counter-flow heat
The energy generated within the house from people lights : a heat pump keeps the air temperature in a house at a temperature of 22.5 oc. the house is losing heat to the outside
To a closed system we add 28 kj of heat while its internal : a to a closed system we add 28 kj of heat while its internal energy decreases by 24 kj. how much work do we gain or
If the plant uses 287 kgs of coal as its fuel and coal has : a coal-fired power plant uses a large lake for its cooling needs. the power plant output is 300.0 mw. if the plant uses
A bar of high strength aluminum alloy is 150 mm long and : a bar of high strength aluminum alloy is 150 mm long and has a circular cross section of diameter 40mm. it is subjected
Steam enters an adiabatic turbine at 3 mpa and 350 celsius : steam enters an adiabatic turbine at 3 mpa and 350 celsius and leaves the turbine at 75 kpa with a quality of 89. if

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Find the force f required to hold the plug in place at the

find the force f required to hold the plug in place at the exit of the water pipe. the flow rate is 1.5 m3s the

  Method available-australia to protect intellectual property

Prepare a report on the various types of methods available in Australia to protect intellectual property - The strategy's main items should include what to protect, what countries to protect it in, how to protect it, and when to seek protection

  Determine the cpk for the new machines

You want to know if you should replace the existing machines, which has a Cpk of 1.0. You decide to determine the Cpk for the new machines and make a decision on that basis.

  During the same 10 minutes heat transfer occurs at a

2kg of air in a closed rigid tank is fitted with an electrical resistor. the resistor draws a constant current of 10

  What is the distance between the hook ends if the spring is

a helical tension spring is made of 1.2 mm wire having a yield strengths of 1280 mpa tension and 740 mpa torsion. the

  The water layer is at a temprature of 0 c determine the

a person with a mass of 85 kg wearing snow skis is gliding down a long slope at an angle of 15 degrees. each ski is 185

  Determine the magnitude of forces t

the boat is to be pulled onto shore using two ropes. If the resultant force is to be 1000 N, directed along the keel aa , determine the magnitude of forces T, P acting in each rope at the angle teta of P so that the magnitude of P is minimum. T ac..

  An engineer designing a vibration isolation system for an

an engineer designing a vibration isolation system for an instrument console models the console and isolation system as

  The 24m wide portion abcd of an inclined cantilevered

the 2.4m wide portion abcd of an inclined cantilevered walk-way is partially supported by members ef and gh. knowing

  Determine the pressure and the internal energy

refrigerant -134a at 800kPa and 25 C is throttled to a temperature of -20C. determine the pressure and the internal energy of the refrigerant at the final state.

  A rigid tank of cold fluid sits in a room at 300 k t the

a rigid tank of cold fluid sits in a room at 300 k t... the fluid is initially at 180 k t.. the luis temperature is

  An 8 ft3 tank contains air at an initial temperature of 80f

an 8 ft3 tank contains air at an initial temperature of 80f and intial pressure of 100psi. the tank develops a small

Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd