A vapor-compression refrigeration system is conventional except that a countercurrent heat exchanger is installed to subcool the liquid from the condenser by heat exchange with the vapor stream from the evaporator. The minimum temperature difference for heat transfer is 5°C. Tetrafluoroethane is the refrigerant (Table 9.1, Fig. F.2), evaporating at -8°C and condensing at 24 °C. The heat load on the evaporator is 2000 kJ/s.

A steel with BS code 230M07 represents

For each of the endothermic and exothermic reactions, explain which reactor type is optimal for adiabatic operation.

Select all statements that apply to constant volume calorimetry.     A coffee cup calorimeter is used.     A bomb calorimeter is used.     The system is the reaction or process.     The system is the water plus the calorimeter.     The surroundings include the reaction or process only.     The surroundings include the water plus the calorimeter.     The temperature of the water will always increase.     The temperature of the water will always decrease.     The temperature of the water could increase or decrease.     It is used to measure heat of combustion.     It is used to measure heat of solution or reaction.