The website below gives an image of the type of fin-tube arrangement used. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19640001284_1964001284.pdf The flow within the tube is assumed laminar and steady, the fluid is Newtonian, incompressible that comprises of constant properties apart from density which changes due to the temperature change, water will be the acting fluid. The fin tube arrangement is to act as a solar collector panel. One side of the boiler is exposed to a variable solar heat flux that is concentrated. The side of the boiler consists of a series of fin-tube plates acting as the solar collector panel. Each plate consists of a vertical tube that has 2 wings attached, one on either side of the tube. One end of the tube comprises water at a temperature of 20’C while the other end of the tubing must be at a saturation temperature. The pressures at which it is desirable to operate at range from 5-20 bar. Justify what type of material the plate arrangement is to be made out of. The fin-tube arrangement may consist of any dimensions with a suitable relationship. The back side of the plate is considered adiabatic. The plate is exposed to the natural environment with an ambient air temperature and will experience radiative and convective losses. Determine the temperature distribution profile for the plate. Determine the heat loss from the plate, including back radiation. The water will flow through the tube as a result of thermosyphon, determine the mass flow rate of the fluid from natural buoyancy and the heat transfer coefficient along the length of the pipe. The plate is exposed to a variable heat flux which is provided from an external source. The heat flux may be of any magnitude but must heat the water within tube to the desired saturation temperature, the heat flux may be assumed to be uniform across the width of the plate but is variable along the length of the plate, between the cold and hot reservoirs. The heat flux, radiation input flux, is constant in the x direction but varies in the y direction. Obtain an expression for the heat flux as a function of length and to determine the ideal heat flux distribution for the required pressure range. Plot the input flux and a function of plate length/height.