Consider a flow of water in a cylinder maintained at constant temperature of 1000 C, the diameter of the cylinder is 50 mm and the length of the tube is 6m. The inlet and the outlet temperature of the water is Ti = 150 C and T0 = 570 C . Find the average heat transfer coefficient associated with the flow of water . Mass flow rate is 0.25 Kg/ s and Cp = 4.178 KJ/Kg.K A) 850 W/m2.K B) 650 W/m2.K C) 755 W/m2.K D) 725 W/m2.K

Apply the first law of thermodynamics to flow system with two inlets and one outlet. Assume that heat is supplied to the system. Draw the neat sketch and lable inlet and outlet properties

Water flows in a horizontal pipe with an I.D. of 5cm (circular cross-section) and a length of 20 meters at a velocity of 1.2 m/sec. The water enters the pipe at a temperature of 20 °C and exits at 60 °C. The system can be considered steady. Calculate the following: The (average) rate of heat transfer to the flow per square cm of pipe wall area (W/cm2).

Given • 1 million people in Hong Kong using low-flush toilet and low-flow shower head.• 1 million leaky toilet and Faucet. Energy needed to treat waterAverage energy use for water treatment drawn from southern California studies is 652 kWh per acre-foot (AF), where one AF = 325,853 gallons.Thermal Energy in CoalThe thermal power plants consume about 0.45 kg of coal per kWh.Energy output/fire power plantA typical 500 megawatt coal power plant produces 3.5 billion kWh per year.CO2 EmissionTaking coal to contain 50 percent carbon, which combines with oxygen during burning to form CO2, we can arrive at 1.83 kg CO2 for every 1 kg of coal burned. Find 3. How much CO2 we can reduce?

The overall engine heat transfer rate (kW) for a single cylinder engine with a 0.09 m bore and stroke, average combustion gas temperature of 980 K, coolant temperature of 345 K, and fuel-air flow rate of 1.8 *10-2 kg/s is: (Assume the thermal conductivity is 0.062 W/m.K and the dynamic viscosity is 19*10-6 N.s/m2). Select one: O a. 26 O b. 46 O c. 36 O d. 66 O e. 56

we are supposed to find the rate of heat transfer

A t-joint is another common piping component, typically used to combine or separate flows of fluid. This t-joint has two inlets and one outlet. We want to find the flow rate through the outlet and the force to hold the t-joint in place. The working fluid is water. One inlet, open to the left, is 6 cm diameter and receives water at a velocity of 4 ms ¹. The other inlet, open to the right, has a volume flow rate of 1 Ls¹ and a diameter of 4 cm. If the outlet has a diameter of 12 cm and faces upwards with regard to gravity, determine: (a) the velocity through the second inlet. [0.80 m s-¹] (b) the velocity through the outlet. [1.09 m s-¹] (c) the reaction forces (x, y directions) to hold the t-joint in place [x: -181.7 N, y: 1156 N] Losses due to viscosity are assumed negligible. The outlet discharges to atmosphere. The weight of the t-joint and the fluid within it are negligible.

From a PPRC (shiny surface) pipe with an inner diameter of 20.5 mm and a length of 70 cm, water at 20 ° C flows at a flow rate of 1500 L / h and a pressure difference of 52 mbar occurs. Based on these data, find the speed of the water, the Re number, the friction factor, the f value and the pressure difference (in mbar) and show the f value you found from the Moody diagram. (For 20 ° C water; p = 998 kg / m3,µ= 1.003x10-3 N.s / m2, v = 1.005x10-6 m2 / s, 1 bar = 10.2141mSS)

2-) 10500 kg/hr of water is heated using a counter-flow, double-pipe heat exchanger utilizing superheated steam. Steam passes through the heat exchanger at 130 °C after entering at 180 °C. Water has an entrance temperature of 30 °C and an outlet temperature of 80 °C. Calculate the heat transfer area if the overall heat transfer coefficient from steam to water is 814 W/m² K. How much more area would there be if the fluid flow was parallel?

Thanks to the action of a fan a mass flow rate of 5000 kg/h of air (c = 1000 J/kgK)) flows inside a duct. Air enters the duct at a temperature of 50 "C and exits at a temperature of 54 "C. Knowing that the air receives a thermal power of 2 kW and that the changes in kinetic and potential energy are negligible, what is the fan power input (W)? O (a) -3555.5 O (b) -1780 O (c) -7555.5 O (d) +3780