Reference tables tell us that on June 15th in the Northeastern United States, the Sun's average irradiance is 1,060 watts/m^2. Using the equation below, we can calculate the irradiance absorption of a surface: Sun's Irradiance (w/m^2) x Area of Exposure (m^2) x duration of exposure (hr) = irradiance absorption. What is the irradiance absorption of a 15 m x 10 m roof that experiences 10 hours of direct sunlight on June 15th? Remember: before calculating irradiance, find the area by multiplying length time width

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.