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A ground-coupled heat pump operates on the ideal vapor-compression cycle with refrigerant 134-a as the working fluid. This heat pump has a SEER equal to 15 m this cooling mode and maintains a space at 25 degree C w hen absorbing heat from the space at the rate of 18 kW in the evaporator. The evaporator operates at 20 degree C. and the condenser operates at 1400 kPa. Ground water taken from a well at the rate of 0.32 kg s (equivalent to a volume flow rate of approximately 5 gal mm) absorbs the heat transferred from the refrigerant in the condenser. Sketch the hardware for the cycle showing all energy interactions for the components. Sketch the T-s diagram for the cycle. If the ground water enters the condenser at 10 degree C (50 degree F), what will be the temperature of the cooling water as it is returned to the ground, in C? Assume Cp = 4.18 kJ/kg k for cooling water.
a spacer made of aisi 1020 hot-rolled steel is in the form of a hollow cylinder with a nominal inside diameter of 3.25
a 1 hp electric motor drives a water pump. the pump volumetric flow rate is 2103 m3s at 300 k.a determine the head loss
Cylinder problem, Determine the strains in thick walled cylindrical vessel with inside diameter 1000 mm and outside diameter of 1400 mm
what is the change in enthalpy in kjkg of oxygen as its temperature changes from 150 to 200oc? is there any difference
an open feedwater hearter operating at steady state accepts superheated steam at 500kpa and 200degc and mixes the
What is the effect of immersion depth on a glass electrode and what aspects of the design of a pH electrode installation would lead to reduced manual maintenance and improved reliability
10 kg of water in a piston cylinder exists as a saturated mixture at 120 kpa with quality 40. the water is now heated
The bent rod ABDE is supported by ball-and- socket joint at A and E and by the cable DF. If a 600-N load is applied at C as shown , determine the tension in the cable.
a particle is moving along a circular path having a radius of 5.7 in. such that its position as a function of time is
determine the magnitude of its total accleration when (a) t=0 and (b) t=2 Whats the solution.
A cylindrical bar of aluminum 19 mm (0.75 in) in diameter is to be deformed elastically by application of a force along the bar axis. Using E=10 psi (Modulus of Elasticity), determine the force that will produce an elastic reduction of 1e-4 in. in..
a diffuser is a device that the flow of air in order to recover a pressure loss. for the diffuser shown in the attached
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