What fraction of the incident energy is lost by convection

Assignment Help Mechanical Engineering
Reference no: EM13718202

A solar energy collector on a rooftop is 6x6 meters and mounted in a horizontal position. The incident solar energy flux is 630 W/m^2. If the surface of the collector is 65 C and surrounding air is stagnant at 10 C. What fraction of the incident energy is lost by convection to the surrounding air?

Reference no: EM13718202

Questions Cloud

What is the random chance for any person of being right : (3) z-score in complexchoicesAssumethere are 25 subjects that have to find 4 identical wines in a sample of 20 wines.(a) What is the random chance for any person of being right?
What is the rate at which thermal energy will appear in wire : A potential difference of 0.90 V will be applied to a 29.0 m length of 18-gauge copper wire (diameter = 0.0400 in.) What is the rate at which the thermal energy will appear in the wire
The length of the tubes keeping in mind space restriction : Water flowing at a rate of 3.8 kg/s is heated from 38 to 55 C in the tubes of a shell and tube heat exchanger. The shell side is one pass with water flowing at 1.9 kg/s entering at 94 C. The overall heat transfer coefficient is 1420 W/m^2*K. The aver..
Determine how much work is done by gravity : Two masses, m1 = 25.0 kg and m2 = 45.0 kg, are attached by a mass less rope over a mass less pulley, Determine how much work is done by gravity on m2 as it falls
What fraction of the incident energy is lost by convection : A solar energy collector on a rooftop is 6x6 meters and mounted in a horizontal position. The incident solar energy flux is 630 W/m^2. If the surface of the collector is 65 C and surrounding air is stagnant at 10 C.
What is the tension the elevator rope has to withstand : An elevator (cabin mass 530 kg) is designed for a maximum load of 3900 kg, and to reach a velocity of 2.6 m/s in 6 s. For this scenario, What is the tension the elevator rope has to withstand
What is the average force that the astronaut exerts on wall : A 70-kg astronaut pushes against the inside back wall of a 2000-kg spaceship and moves toward the front. Her speed increases from 0 to 2.4 m/s. what is the average force that the astronaut exerts on the wall
Boiler at sea level contains superheated steam : A boiler at sea level contains superheated steam at 0.455MPa absolute pressure and 325°C. Find the gauge pressure in the boiler and the steam temperature in units of K,°R, and °F.
Heated at constant volume until its final pressure : One half of a mole of air is taken through the following processes in a closed piston-cylinder arrangement. From the initial state (V1 = 10 L, p1 = 1 atm) the gas is expanded at constant pressure to a volume of 20 L. It is then heated at constant vol..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Explain why you think this design will work or if you think

yet another company you sure are popular is interested in hiring you to build something for their use. they want to

  Water enters a turbine at 500oc and 6 mpa and leaves at 10

water enters a turbine at 500oc and 6 mpa and leaves at 10 kpa what is the work output per unit mass if the turbine is

  Meaning of the term mechatronics

Briefly describe the meaning of the term mechatronics both in terms of the 'systems approach' and the technology involved.

  A helical compression spring is made of no 18 0147 in wire

a helical compression spring is made of no. 18 .0147 in wire having a torsional yield strength of 108 kpsi. it has an

  At what true event rate will dead time losses not to be

counters a and b are non-paralyzable with dead times of 30 or 100 microseconds respectively. at what true event rate

  Strawberries contain about 15 wt solids and 85 wt

strawberries contain about 15 wt solids and 85 wt water.nbspto make strawberry jam crushed strawberries and sugar are

  Asuming the velocity is a parabolic function of v0 1-tt02

an elevator moves downwards at a constant velocity v0. while descending at a particular height assuming t0 the velocity

  Show that the continutiy equation for a inviscid

show that the continutiy equation for a inviscid irrotational flow leads to leplaces eqaution in terms of the velocity

  Determine number of atoms contained within each of plane

Assuming that within metal crystals, the atoms can be considered as hard spheres in contact, sketch arrangement of atoms in a (100) plane, a (110) plane and a (111) plane of face-centered cubic structure. Determine the number of atoms contained wi..

  During the process heat is transferred to maintain the

air is contained in a variable-load cylinder-piston device equipped with a paddle wheel. initially the air is at 500

  Determine the flowrate molh for each species in the reactor

the fresh feed to an ammonia production process contains nitrogen and 75 excess hydrogen in stoichiometric proportion

  A supersonic aircraft consumes 5320imperial gallons of

a supersonic aircraft consumes 5320imperial gallons of kerosene per hour of flight ang flies an average of 14 hours per

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd