Engineering, 20.02.2020 02:02 Dessyj3113

Helium in a steel tank is at 250 kPa, 300 K with a volume of 0.1m3. It is used to fill a balloon of helium.
When thetank pressure drops to 150 kPa, the flow of helium stops by itself.
If all the helium still is at pressure in the balloon varieslinearly with volume from 100 kPa (V=0) to the final 150 kPa.

How much heat transfer took place?

Answers: 2

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, redrosesxx

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

Answers: 3

continue

Engineering, 04.07.2019 18:20, cristykianpour

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?

Answers: 2

continue

Engineering, 04.07.2019 19:20, zoebtharpe

Heat transfer by is the fastest mode of heat transfer that requires no intervening medium. a)-conduction b)-convection c)-radiation d)-conduction and convection

Answers: 1

continue

Engineering, 06.07.2019 02:30, cofran

A75mm diameter shaft is supported in a journal bearing 75mm long with a diametral clearance of 0. 1mm. it supports a radial load of 1000 n and is lubricated with sae 50 oil at 70°c. find the friction torque and the power loss when the crankshaft rotates at 2900 rev/min.

Answers: 1

continue

You know the right answer?

Helium in a steel tank is at 250 kPa, 300 K with a volume of 0.1m3. It is used to fill a balloon of...