Consider a person standing in a room, which is at a temperature of \(21^{\circ} \mathrm{C}\). Determine the total heat rate from this person if the exposed surface area of the person is \(1.6 \mathrm{~m}^{2}\) and the average outer surface temperature of the person is \(30^{\circ} \mathrm{C}\). The convection coefficient from the surface of the person is \(5 \mathrm{~W} / \mathrm{m}^{2}{ }^{\circ} \mathrm{C}\). What is the effect of radiation if the emissivity of the surface of the person is 0.90 ?