Battery of silicon photocells mounted on plane surface

Assignment Help Mechanical Engineering

Reference no: EM13708112

A battery of silicon photocells mounted on a plane surface operates with an efficiency of 16.7% under all conditions encountered in this problem. it is installed at a location 45 degrees north. the time is 10:00 on April 1, 1995. When the battery faces the sun directly it delivers 870 W to a resistive load. How much power does it deliver if the surface is setset at an elevation of 25 degrees and faces true east?

Reference no: EM13708112

Questions Cloud

What is the total rate of their heat transfer : Metal balls 10 mm in diameter are to be annealed by heating them to 827°C then allowing them to cool slowly in air at 27Â°C to the point where they are in thermal equilibrium with the air. 2000 balls are annealed in one hour’s time. What is the total..

Determine volume of the tank and amount of heat transfer : A rigid tank contains 10 lbm of air at 30 psia and 65°F. The air is now heated until its pressure doubles. Determine (a) the volume of the tank and (b) the amount of heat transfer.

The vapor is to be saturated at the outlet of the turbine : A Rankine cycle with superheat is to be designed using water as the working fluid. The boiler pressure will be 1000 psia and the peak temperature will be 900 Â°F. (a) Determine the temperature required for the condenser if the expansion through the t..

Determine the mass of the refrigerant in the tank : A 0.5-m3 rigid tank contains refrigerant-134a initially at 160 kPa and 40 percent quality. Heat is now transferred to the refrigerant until the pressure reaches 700 kPa. Determine (a) the mass of the refrigerant in the tank and (b) the amount of heat..

Battery of silicon photocells mounted on plane surface : A battery of silicon photocells mounted on a plane surface operates with an efficiency of 16.7% under all conditions encountered in this problem. it is installed at a location 45 degrees north. the time is 10:00 on April 1, 1995. When the battery fac..

Assume ideal gas behavior with constant specific heats : The following cycle involves 3 kg of air. From 1 to 2 is polytropic compression where P1=150 kPa, T1=360 K, P2=750 kPa, V2=0.54 m^3 and n=1.2 . From 2 to 3 is constant pressure cooling and from 3 to 1 is constant temperature heating. Determine the to..

Compute the frictional losses between these two sections : Water flows in a 2 ft diameter duct under the following conditions: p1= 55 psia and v1=20ft/sec. At another section 12 ft below the first the diameter is 1 ft and the pressure p2=40 psia. Compute the frictional losses between these two sections. Dete..

Piston-cylinder assembly contains a two-phase liquid-vapor : A piston-cylinder assembly contains a two-phase liquid-vapor mixture of ammonia initially at 500 kPa with a quality of 98%. Expansion occurs to a state where the pressure is 150 kPa. During the process the pressure and specific volume are related by ..

Calculate the volume flow rate and mass flow rate : Water at 30 degrees C flows through a horizontal pipe (1 inch inside diameter), in which the pressure drop is to be limited to 0.015 lbf/ft^2 per foot of length. This low pressure per foot is imposed by the excessively long line involved. Calculate t..

User Account

All Pages