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In the expression for finding the rate of flow of air arising due to the difference in temperature of outside and inside, the coefficient of effectiveness for general conditions is taken as ___________

In the expression for finding the rate of flow of air arising due to the difference in temperature of outside and inside, the coefficient of effectiveness for general conditions is taken as ___________ Correct Answer 0.65

In the expression for finding the rate of flow of air arising due to the difference in temperature of outside and inside, coefficient of effectiveness for general conditions is taken as 0.65. However, it is taken as 0.50 in the case of unfavorable conditions.

Related Questions

The rate of flow of air arising due to the difference in temperature of outside and inside is given by the expression ____________ ½ b) Q = 320 C.A. x h(T-t) c) Q = 640 C.A. ½ d) Q = 640 C.A. x h(T-t)
In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives.
Raising effective primary and district-level coverage of mental health services for the general population, without requiring people to travel longdistances to see a specialist and get medicines, should be a priority. _________________ the base of psychiatrists is low in relation to the need,the use of trained general practitioners as the first line of contact assumes importance. Some studies show many of them are not confident________________ with their training to detect, diagnose and manage mental illnesses. ______________ a concerted effort, primary carephysicians can be trained to help people with mild and severe problems, ________________ from anxiety disorders to depression, psychosesand conditions arising from alcohol and substance _______________. psychoses and conditions arising from alcohol and substance _______________.
On a winter day with atmospheric air at −15°C, the outside front wind-shield of a car has surface temperature of +2°C, maintained by blowing hot air on the inside surface. If the wind-shield is 0.5 m2 and the outside convection coefficient is 250 W/Km2, find the rate of energy loss through front wind-shield.
In a survey of 25 students, it was found that 15 had taken Mathematics, 12 had taken Physics and 11 had taken Chemistry, 5 had taken Mathematics and Chemistry, 9 had taken Mathematics and Physics, 4 had taken Physics and Chemistry and 3 had taken all the three subjects. Find the number of students who had taken both Physics and Chemistry but not Mathematics.
In a survey of university students, 64 had taken Drama course, 94 had taken Dance course, 58 had taken a Singing course, 28 had taken Drama and singing course, 26 had taken Drama and dance course, 22 had taken Dance and singing course, and 14 had taken all the three courses. Find how many have taken only one course?
Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade?
The rear window of an automobile is made of thick glass i.e. AB = 5 mm and thermal conductivity is 0.8 W/m degree. To defrost this window, a thin transparent film type heating element has been fixed to its inner surface. For the conditions given below, determine the electric power that must be provided per unit area of window if a temperature 5 degree Celsius is maintained at its outer surface. Interior air temperature and the corresponding surface coefficient are 20 degree Celsius and 12 W/m2 degree. Surrounding air temperature and the corresponding surface coefficient are – 15 degree Celsius and 70 W/m2 degree. Electric heater provides uniform heat flux
Ventilation arising from the temperature difference between outside and inside takes place due to ____________ effect.
A steel strap is serving as a support for the steam pipe. The strap is welded to the pipe and bolted to the ceiling. The junction between the support strut and the ceiling is adiabatic, and the outside temperature of steam pipe is 105 degree Celsius. The strut AB is 60 cm high and AD = BC = 12.5 cm. It is 0.3 cm thick. Workout the rate at which heat is lost to the surrounding air by the support strut. It may be assumed that thermal conductivity for steel is 45 W/m degree, the total outside surface coefficient is 17 W/m2 degree and the surrounding air is at 32 degree Celsius
A heat pump working on the Carnot cycle maintains the inside temperature of a house at 22°C by supplying 450 kJ/s. If the outside temperature is 0°C, the heat taken, in kJ/s, from the outside air is approximately