Engineering, 26.07.2019 18:30, belle5828

Air is heated in a duct as it flows over resistance wires. consider a 20 kw electric heating system. air enters the heating section at 100 kpa and 15°c with a volumetric flow rate of 140 m/min. if heat is lost from air in the duct to the surroundings at a rate of 150 w, determine (a) the exit temperature (72) of air and (b) the energetic efficiency (ou). use the pg model for air and neglect the power consumed by the fan. (c) draw an energy flow diagram for the system.

Answers: 2

Show answers

Other questions on the subject: Engineering

Engineering, 04.07.2019 18:10, yasminothman02

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Answers: 3

continue

Engineering, 04.07.2019 18:10, Fahaddie

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Answers: 2

continue

Engineering, 04.07.2019 18:20, alexis9263

Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms

Answers: 2

continue

Engineering, 04.07.2019 18:20, 21megoplin

How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s

Answers: 2

continue

Do you know the correct answer?

Air is heated in a duct as it flows over resistance wires. consider a 20 kw electric heating system....