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A heat pump is used to maintain a house at a constant temperature of 23°C. The house is losing heat to the outside air through the walls and the windows at a rate of 60,000 kJ/h while the energy generated within the house from people, lights, and appliances amounts to 4000 kJ/h. for a COP of 2.5, determine the required power input to the heat pump. [6.22 kW]
write a reflective assessment of how you rate yourself against these competencies and Describe the main learning outcomes that this course and the EWB project have generated for you over the semester. Have any of these learning outcomes been a ..
a 1500 kg car is traveling up on a road with a slope of 15 i.e. rise of 15 on a run of 100 at a constant speed. knowing
steam enters an adiabatic turbine at 8 mpa and 520 degc with a volumetric flow rate of 0.8 m3s and exits at 30 kpa. the
a refrigeration system is designed to operate between temperture limits of -10 c and 25 c. the power input to the steam
Determine the maximum speed at which the car with mass can pass over the top point A of the vertical curved road and still maintain contact with the road.
consider a 20-l evacuated rigid bottle that is surrounded by the atmosphere at 100 kpa and 27 celsius. a valve at the
3 rigid tank initially contains refrigerant-134a at 14oc. at this state 70 of the mass is in the vapour phase and the
a mass of 5 lbm is released when it is just in contact with a spring of stiffness 25 lbfft that is attached to the
Knowing that in the position shown the rod has angular velocity of 4 rad/s clockwise; determine the angular velocity of the rod after it has rotated through a 90°.
suppose that you are designing a toy car that will be propelled by water that squirts from an internal tank at 3 ms
find the phase compressed liquid superheated vapor saturated liquid saturated vapor or a mixture of saturated liquid
a 30 m x 30 m concrete floor slab is heated by 0.025 m diameter hot water pipes sunk beneath the floor surface and
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