Question

In: Mechanical Engineering

Soybean oil at 30 degress Celsius is to be pumped from an open vat through 60...

Soybean oil at 30 degress Celsius is to be pumped from an open vat through 60 m of standard galvanized iron pipe (internal diameter of 9 cm) into the top of a stroage tank that is 17 m above the surface of the vat. The pipeline contains 3 type B elbows and a gate valve. It is desired to pump the oil at 13.7 m^3/hr.

1) How much work head must be added by a pump at this pumping rate?

2) Assuming 75% efficiency, what size motor (watt) would the pump require?

3) What percentage of the total frictional head loss is due to pipe friction alone (major losses)?

Solutions

Expert Solution

good luck


Related Solutions

5 t/hr of soybean oil is pumped through a smooth stainless steel pipe 5 cm in...
5 t/hr of soybean oil is pumped through a smooth stainless steel pipe 5 cm in diameter at 30C. A) What will the coefficient of friction be? B) If by heating the oil its viscosity can be reduced by a factor of 5 and its density by 5%, how will the fraction be affected? C) Suppose the pipe is not smooth as originally thought. how would the assumed fraction be affected? D) If the pumping distance were extended by 50%...
A 20 degree Brix apple juice is being pumped from an open tank through a 1-in...
A 20 degree Brix apple juice is being pumped from an open tank through a 1-in nominal diameter sanitary pipe into a second tank at a higher level. The mass flow rate is 1 kg/s through 30 m of straight pipe with two 90 degree standard elbows and one angle valve. The supply tank maintains a liquid level of 3 m and the apple juice leaves the system at an elevation of 12 m above the floor. Compute the power...
Describe how blood is pumped through the heart from the entry of deoxygenated blood through the...
Describe how blood is pumped through the heart from the entry of deoxygenated blood through the venae cavae to the exit of deoxygenated blood out of the aortae, taking into account the roles of the heart valves and cardiac conductance in the flow of blood.
Water is drawn from a reservoir and pumped an equivalent length of 2 miles through a...
Water is drawn from a reservoir and pumped an equivalent length of 2 miles through a horizontal, circular duct of 10-in. i.d. (wall roughness k = 0.01 ft). At the end of this duct, the flow is divided into a 4- and a 3-in. schedule 40 steel pipe. The 4-in. line has an equivalent length of 200 ft. and discharges to the atmosphere at a point 50 ft. above the surface of the water in the reservoir. This flow must...
An oil at 50C with properties similar to engine oil passes through a 30 cm diameter...
An oil at 50C with properties similar to engine oil passes through a 30 cm diameter pipe with an average velocity of 6 m/s. A 200 m long section of pipe passes under a frozen lake with waters at 0 C. The pipe has the same surface temperature as the lake water. (a) Find the temperature of the oil as it leaves the lake. Neglect the thermal resistance of the pipematerial. (b) At what rate is heat transferred from the...
For the extraction of oil from soybean either leaching using conventional organic solvent or supercritical carbon...
For the extraction of oil from soybean either leaching using conventional organic solvent or supercritical carbon dioxide can be used. For answering the following questions, please cite your text and indicate all the references at the end of your text. You need to use reliable references such as journal articles to support your answer. a) describe the fundamental reason for separation of oil from soybean in the cases of leaching and supercritical carbon dioxide extraction. b) describe the operating principles...
An oil cooler for a large diesel engine is to cool engine oil from 60 to...
An oil cooler for a large diesel engine is to cool engine oil from 60 to 45 °C, using seawater at an inlet temperature of 20 °C with a temperature rise of 15 °C. The design heat load is 140 kW, and the mean overall heat transfer coefficient based on the outer surface area of the tubes us 70 W/m2°C. Calculate the heat transfer surface area for single pass (a)- counter flow and (b)- parallel flow arrangements.
Water at 35°C is pumped through a horizontal, 200-m-long, 30-mm-diameter tube at 0.25 kg/s. Over time,...
Water at 35°C is pumped through a horizontal, 200-m-long, 30-mm-diameter tube at 0.25 kg/s. Over time, a 2-mm-thick layer of scale of surface roughness e = 200 µ m is deposited on the interior tube wall. Determine the pressure drop from the entrance to the exit of the tube and the required pump power for the clean and fouled conditions.
Engine oil (raffinate) with a flow rate of 5 kg/s will be cooled from 60°C to...
Engine oil (raffinate) with a flow rate of 5 kg/s will be cooled from 60°C to 40°C by sea water at 20°C in a double-pipe heat exchanger. The water flows through the inner tube, whose outlet is heated to 30°C. The inner tube outside and inside diameters are do = 1.315 in. (= 0.0334 m) and di = 1.049 in. (= 0.02664 m), respectively. For the annulus, Do = 4.5 in. (= 0.1143 m) and Di = 4.206 in. (=...
Coconut oil is to be produced from dry copra in two stages. First, through expellers to...
Coconut oil is to be produced from dry copra in two stages. First, through expellers to squeeze out part of the coconut oil and then through a counter current multi- stage solvent extraction process. After expelling, the dry copra cake contains 25% residual oil. In the solvent extraction operation, 95% of the residual oil in the expeller cake is extracted as a solution containing 50% by weight oil. After the extraction process, the wt of insoluble cake was found to...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT