Engineering, 23.03.2020 22:59 jaygamer37
Liquid nitrogen for cooling the high-purity germanium detectors, maintained at a temperature of 78 K, is stored in a dewar made from two concentric cylinders. The area between the cylinders is evacuated, so no conduction or convection can occur. The inner cylinder has an outside diameter of 0.6 m and an outside height of 1.5 m. There is a 0.1 m gap between the inside and outside cylinders. The surfaces of both cylinders are gray, with emissivity of 0.2. The outer surface of the outer cylinder has emissivity of 0.8 and loses heat by radiation to surroundings at 300 K.
Find the total heat rate into the liquid nitrogen.
Answers: 1
Engineering, 04.07.2019 18:10, anna22684
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10, soreese02
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:20, kendrawalraven
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
Answers: 3
Liquid nitrogen for cooling the high-purity germanium detectors, maintained at a temperature of 78 K...
English, 24.10.2021 01:00
History, 24.10.2021 01:00
Mathematics, 24.10.2021 01:00