Arby 4.8. two horizontal pipelines are parallel, with one carrying salt water (rho = 1.988 slugs/ft3 ) and the other carrying fresh water (rho = 1.937 slugs/ft3 ). an inverted manometer using linseed oil (rho = 1.828 slugs/ft3 ) as the manometer fluid is connected between the two pipelines. the interface between the oil and the fresh water in the manometer is 38 in. above the centerline of the freshwater pipeline, and the oil/salt water interface in the manometer is 20 in. above the centerline of the salt water pipeline. if the manometer reading is 8 in., determine the difference in the pressures between the pipelines (a) in pa and (b) in psi.

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?

Aheat pump with refrigerant-134a as the working fluid is used to keep a space at 25°c by absorbing heat from geothermal water that enters the evaporator at 500c at a rate of 0.065 kg/s and leaves at 40°c. the refrigerant enters the evaporator at 20°c with a quality of 23 percent and leaves at the inlet pressure as saturated vapor. the refrigerant loses 300 w of heat to the surroundings as it flows through the compressor and the refrigerant leaves the compressor at 1.4 mpa at the same entropy as the inlet. determine: (a) the degrees of subcooling of the refrigerant in the condenser, b)-the mass flow rate of the refrigerant . (c) the heating load and the cop of the pump, and d)-the theoretical minimum power input to the compressor for the same heating load.