Is there a pressure loss when water flows through a
heat exchanger( specifically a helical coil...
Is there a pressure loss when water flows through a
heat exchanger( specifically a helical coil heat exchanger through
the tubes ) if it is the case, how do you calculate the pressure
loss ?
HEAT TRANSFER: HEAT EXCHANGER
Oil flows in a heat exchanger with a mass flow rate of 20 kg/s
and is to be cooled from 175 to 65°C with water as a coolant
flowing at a rate of 30 kg/s and an inlet temperature of 12°C. The
overall heat transfer coefficient is U = 1250
W/m2⋅K.
a) Sketch the temperature profile and calculate the mean
temperature for parallel flow, counter flow, and cross flow heat
exchangers..
b) Determine the area required...
A heat exchanger with one body and eight pipe passes
is designed. Water flows from the exhaust gas pipes as cold fluid
by the body as cold fluid. Exhaust gas to the system at 210 °
C
and entering at a temperature of 140 ° C
The heat transfer coefficient is 392 W / m2K. On the other hand,
water enters 16 iron (k = 38 W / mK) pipes with an inner diameter
and outer diameter of 32 mm...
A shell-and-tube heat exchanger uses cooling water in the tubes.
There are two pressure gages installed on the the water side to the
heat exchanger. Gage 1 (P1) is installed on the inlet
water line, which is connected to the lower nozzle, while Gage
(P2) is installed on the discharge water line, which is
connected to the upper nozzle. Both pressure gages are very near
the nozzle flanges. The pressure drop from each pressure gage to
the exchanger channel is...
An insulated heat exchanger uses geothermal water to heat water
for a chemical plant. Water enters the heat exchanger at a rate of
36 kg/s and is heated from 23 ∘∘C to 69 ∘∘C. The geothermal water
enters the exchanger at a rate of 41.4 kg/s and at an initial
temperature of 130 ∘∘C. The specific heat of the geothermal water
is 4.31 kJ/(kg K). Determine the rate of heat transfer between the
two streams and the rate of entropy...
A shell-and-tube heat exchanger is to used to heat water (in the
tube side) from 30 deg C to 40 deg C at a mass flow rate of 4 kg/s.
The fluid used for heating (shell side) is water entering at 90 deg
C with a mass flow rate of 2 kg/s. A 1-2 STHE is used and the
overall heat transfer coefficient based on the inside area is 1390
W/m2-K. The tubes are 1.875 in diameter (inside) and require...
How to estimate the size of a heat exchanger that is heat water
up from 20C-120C.
5,000,000 g of H2O needed (5000 L H2O)
I have calculated that Q = 2.093*10^9 J
Please tell me how to determine what the size will be and how
much power will be required for this heat exchanger to operate.
please explain each step and equation
Through a double tube exchanger hot water circulates through the inner tube and water
fry through the outer tube. For countercurrent arrangement the following data is displayed:
Cold water inlet temperature Tca 24.5 ° C
Cold water outlet temperature Tcb 48.0 ° C
Hot water inlet temperature Tha 86 ° C
Hot water outlet temperature Thb 55 ° C
Cold water flow 2.00 gal / min
Calliente water flow 2.00 gal / min
Transfer area 0.65 m2 Length of the...
A counter-flow double-pipe heat exchanger is to heat water from
20ºC to 80ºC at a rate of 1.2 kg/s. The heating is to be
accomplished by geothermal water available at 160ºC at a mass flow
rate of 2 kg/s. The inner tube is thin-walled, and has a diameter
of 1.5 cm. If the overall heat transfer coefficient of the heat
exchanger is 640 W/(m2.ºC), determine the length of the
heat exchanger required to achieve the desired heating using the
effectiveness-NTU...
Saturdated water vapor (steam) is commonly used as a heat source
in heat exchanger applications. Why saturated vapor? Why
saturated water vapor? In a plant of any reasonable size,
several varieties of saturated steam are commonly available; for
example, saturated steam at 4.5,9,17, and 33 bar. But the higher
the pressure the lower the useful energy content (why?), and the
greater the unit cost. Why then is higher-pressure steam used?
A shell-and-tube heat exchanger heats oil from 2°C to 35°C using
hot water. The oil flows in the shell in a single pass. Water flows
in 5 copper tubes with a total (all tubes) rate of 0.5 kg/s. Each
tube makes 4 passes through the shell and the length per pass is 4
m. The tube inner and outer diameters are 15 mm and 19 mm. The
water enters at 95°C and leaves at 29°C.
1. Estimate the average convection...