what is better pipe to use for hot water application: HDPE or PP? Why?
HDPE is better pipe to use for hot water application.
As it's melting point is very high, in the range of 160-170 °C, it can withstand heat for a longer duration of time than PP which has a less melting point of 110-120 °C.
what is better pipe to use for hot water application: HDPE or PP? Why?
why is HDPE a better choice for a milk bottle, which is filled with hot liquid, than PET?
“A pipe is carrying hot water through a cold storage facility. The ambient air in the cold storage has temperature of ?5?C. To maintain uniform temperature in the cold storage, blowers installed in the facility induce a 3 m/s velocity to the cold air (which can be assumed to be flowing across the water pipe). Hot water inside the pipe has a mean velocity of 0.5 m/s. The internal and exter- nal diameter of the pipe are 8.4 cm and...
a pipe carrying hot water and another carrying cold water are buried underground such that the two pipes are parallel to each other. The distance between the pipes is 500 mm and the thermal conductivity of the soil is 0.05 W/m K. the outer diameter of the hot water pipe is 10 cm and that for the cold water pipe is 7.5 cm. The surface temperatures of the pipes are 175C and 5C respectively. Determine the heat transfer rates between...
What application for heat exchanger that use cold fluid in shell side and hot fluid in tube, and also what application that use hot fluid in shell side and cold fluid in tube side, and what is the reason?
Hot and cold water streams exchange heat in a double pipe heat exchanger in counter current flow. The pipes are 3 ft long. The inside pipe is a 5/8 inch BWG 12 copper tube. The outside pipe is a 1 inch Sch 40 steel pipe. The outside pipe is insulated to minimize heat loss to the surroundings. The hot water enters the inside tube at 180F with a flow rate such that Re = 10000 The cold water flows through...
Question 12 1 pts Suppose you have access to a pipe of flowing hot water at 100° C and a second pipe of flowing cold water at 0° C. What is the efficiency of most efficient heat engine possible? 21.1% 31.3% 13.2% 27.3%
A copper hot water pipe (outer diameter ½”) has an exterior temperature of 49oC. For insulation,it is wrapped in polyethylene foam that is ½” thick. If the pipe is 12 feet long and runs through a utility room whose temperature is 7oC Find the rate at which heat is lost through the insulation. Polyethylene foam has a thermal conductivity of 0.024W/(m·K) (Hint: use the outer surface area of the insulation)
Given: The size of the insulated pipe for transporting hot water is to be minimized. The size of the insulated pipe can be expressed as, y = D + 2T, where D is the diameter of the pipe, T is the insulation thickness, The total annual operating cost consists of the sum of the pumping cost and the heating cost, and it is to be no more than $40,000. Pumping cost = 8/D5 Heating cost = 1500/T Find: (a) the...
Hot water at 80°C flows through pipe is enclosed by a thin shell with a 120 mm diameter that is maintained at a temperature of 35°C. The space between the pipe and shell is completely filled with an insulative material (kins 0.05 W/m-K). Determine a.) the rate of heat loss per unit length (W/m) if the pipe and shell are concentric and b.) the rate of heat loss per unit length (W/m) if the pipe and shell centers are offset...
a) Why do you use a minimum of hot water solvent in carrying out a recrystallization of a particular compound? b) Why is it desirable to use suction filtration rather than gravimetric filtration in recovering the purified crystals? c) Why should the suction be released before the solid is washed with fresh solvent?