4) A solar collector plate of thickness t is attached to copper
tubes as shown. The collector receives combined beam and diffuse
radiation at a uniform rate of . The temperature of the pipes at
the point of contact to the collector maintains constant at To. The
bottom surface is well insulated (i.e., no heat transfer from that
side). The collector is also exposed to a moving air at
with a convective heat transfer coefficient of h. Neglect any heat
transfer in the direction perpendicular to the paper.
a)Write the energy balance for a typical infinitesimal control volume (c.v.) that is 1.4 meters away from the collector’s leading edge to derive a differential equation for the temperature distribution T(x) in the plate. Solve the differential equation and apply appropriate boundary conditions to determine the temperature profile. Given the following variables:
{:[(d^(2)psi)/(dx^(2))=(d^(2)T)/(dx^(2))],[(d^(2)psi)/(dx^(2))=(U_(L))/(KE)psi],[(d^(2)varphi)/(dx^(2))-m^(2)psi=0],[=>psi=A sinh mx+B cosh mx],[" Boundary Conditions, "T=T_(0)=>varphi=T_(0)-T_(oo)-(q^(''))/(U_(L))" of "x=0],[ psi|_(x=0)=A(0)+B(1)=>B=T_(0)-T_(oo)-(q^(''))/(U_(L))],[T=T_(0)=>varphi=T_(0)-T_(oo)-(Q^(''))/(U_(L))" ot "x=2L],[ psi|_(x=L)=A sinhm 2L+(T_(0)-T_(oo)-(q^(n))/(U_(L)))cos-hm2L],[ubrace(T_(0)-T_(oo)-(q^(''))/(U_(L)))_(theta_(0))=Asinhm2L+ubrace((T_(0)-(T_(0)-q^(''))/(T_(L))))_(theta_(0))coshm(2L)],[A=th ... See the full answer