The oblique reservoir manometer shown in the figure consists of a 35 mm diameter vertical reservoir cylinder and a 5 mm diameter tube inclined at an upward angle of 15 °. If the vertical reservoir cylinder is inclined to the atmosphere, the tube opens to the air channel. The manometer is filled with liquid with a specific gravity of 0.785. What will be the pressure in the air duct if the manometer liquid in the inclined tube rises 50 mm upwards?

An air-conditioning system consists of a heating section and an evaporative cooler. air enters the heating section at 10°c and 70 percent relative humidity at a rate of 30m^3/min, and it leaves the evaporative cooler at 20°c and 60 percent relatively humidity. if the air conditioning system operates at a total pressure of 98 kpa, determine (a) the temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the heating section, and (c) the rate of water added to air in the evaporative cooler