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A walk-in cooler using a vapor compression refrigeration cycle is configured as shown below. The cycle uses CFC22 or R22 as the refrigerant. Assume frictionless flow through all piping and heat exchangers (e.g. neglect pressure drops except through the expansion valve). Assume saturated liquid leaves the condenser and saturated vapor leaves the evaporator. A heat exchanger is used to transfer thermal energy between the hot liquid leaving the condenser and the cold vapor leaving the evaporator. Assume this heat exchanger has perfect external insulation so the only energy transfer is between the two fluids. The main purpose of this heat exchanger is to prevent liquid from entering the compressor and damaging it. Known data are: T1=30 °C, T2=10 °C and T4= -10 °C. What are C of P and T(6)?
find omega3 va vb and vc of the mechanism below using the instant center graphical method. develop the linear graph and
Find the desired radius and mass of the absorber if the absorber is to not exceed an angular deflection amplitude of 30 degrees when the engine is running at 750 rpm.
solve the following problem by showing all work answers in parenthesis steam enters a diffuser at 20 paia and 240degf
(a) Draw a schematic of the system and (b) determine if the inventor's claims are true.
a four-cylinder four-stroke 2.8-liter compression-ignition engine operates on the ideal dual cycle with a compression
compute (a) the interplanar spacing for the set of planes and (b) the atomic radius for the rhodium atom.
initially an insulated rigid tank contains 15.65 kg of water at 24.16oc and 101 kpa. the tank also contains a 3.12 kg
a cast-iron cylinder of 300mm bore carries a pressure of 30 newtons per squaremillimetre what should be its thickness
1. a commercial refrigerator keeps food fresh at -12 ordmc. it is estimated that the refrigerator removes 3300 kjhr
in an experiment similar to the procedure set out for part a of the calorimetry experiment 1.500 g of mgs was combined
What are the percentages of the total heat absorption taking place in the economizer, boiler drum and the superheater, respectively? Assume cp of air and water as 1.005 kJ/kg K and 4.2 kJ/kg K, respectively.
a household refrigerator that has a power input of 80w assume constant work input over time and a coefficient of
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