subject
Engineering, 24.10.2019 18:43 kathleensumter4913

A4-m × 5-m × 7-m room is heated by the radiator of a steam-heating system. the steam radiator transfers heat at a rate of 10,000 kj/h, and a 100-w fan is used to distribute the warm air in the room. the rate of heat loss from the room is estimated to be about 5000 kj/h. if the initial temperature of the room air is 10°c, determine how long it will take for the air temperature to rise to 20°c. assume constant specific heats at room temperature.

ansver
Answers: 3

Other questions on the subject: Engineering

image
Engineering, 04.07.2019 18:20, mjcbs21
What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.
Answers: 3
image
Engineering, 04.07.2019 18:20, aly95
An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid
Answers: 3
image
Engineering, 06.07.2019 04:10, ninaaforever
Natural gas (95 percent methane and 5 percent ethane by volume) flows through a 90 cm diameter pipeline with a velocity of 3 m/s. the pressure in the pipeline is 700 kpa, and the temperature is 15°c. calculate: (a) the mass and volumetric flow rates in this pipe.
Answers: 1
image
Engineering, 06.07.2019 04:30, josephvcarter
Describe briefly, the concept of mass production in modern industrial system.
Answers: 1
You know the right answer?
A4-m × 5-m × 7-m room is heated by the radiator of a steam-heating system. the steam radiator transf...

Questions in other subjects:

Konu
Social Studies, 14.12.2021 15:10
Konu
Physics, 14.12.2021 15:20