Aflat-plate collector with one cover is inclined at a slope of 50◦ from the horizontal. the plate temperature is 100◦c and its emittance is 0.10. the cover temperature is 31.5◦c, and the (glass) cover has an emittance of 0.88. the plate-cover spacing is 25mm. a calculate the radiative transfer from plate to cover. b calculate a radiation heat transfer coefficient from plate to cover. c calculate the convective transfer from plate to cover. d given an effective surrounding temperature of 10◦c, estimate the net radiative exchange between the cover and the surroundings.