Heat Exchanger information needed?

unidave · Jan 27, 2010

As a University project I am designing a modular heat exchanger for a British Army Land Rover 90/110 2.5 Diesel.I am going to study the Land Rover Thermal needs at Tick over. In order to complete the calculations and get any where I need to attain the following information:-

1) Mass flow rate of the coolant, or the water pump output and speed at tick over.
2) Amount of air from the fan at tick over(volume and rate of speed), cut in temperature of fan.
3) Radiator inlet and outlet temperatures at tick over.
4) Engine running temperature at tick over.

If you could answer any of the questions above it would be very helpful to me. Thank you in advance for your help.
Dave

ratty · Jan 27, 2010

unidave said:
As a University project I am designing a modular heat exchanger for a British Army Land Rover 90/110 2.5 Diesel.I am going to study the Land Rover Thermal needs at Tick over. In order to complete the calculations and get any where I need to attain the following information:-

1) Mass flow rate of the coolant, or the water pump output and speed at tick over.
2) Amount of air from the fan at tick over(volume and rate of speed), cut in temperature of fan.
3) Radiator inlet and outlet temperatures at tick over.
4) Engine running temperature at tick over.

If you could answer any of the questions above it would be very helpful to me. Thank you in advance for your help.
Dave

Hi Dave

I don't really think that you have thought this through. What are you wanting the heat exchanger to do? If you are going to 'study' the the Land Rover Thermal needs at Tick over' as you put it, why are you asking us the answer to what you are about to do when you will soon see the answers for yourself?

This is a very hard post to answer without sounding like we are taking the **** out of you. Lets start at the beginning to see why shall we?

1) Mass flow rate of the coolant, or the water pump output and speed at tick over. How worn is the waterpump? What 2,5 diesel engine are you talking about? What altitude are you at? How blocked is the radiator? How old are the cooling parts? What antifreeze is in the engine? What exact percentage of the coolant is antifreeze? How long are the radiator hoses? What angle are they on? What is the engine rpm of that exact vehicle at the exact time you wish to take the measurement? What fan is fitted? What is the level of drag of the viscous coupling at that speed?

2) Amount of air from the fan at tick over(volume and rate of speed), cut in temperature of fan. What altitude are you at? what is the outside temperature? what is the engine bay temperature? What thermostat is fitted to the landy? Has it been winterised? How seized is the viscous? what are the engine revs? How worn is the viscous coupling? What 2.5 diesel engine?

3) Radiator inlet and outlet temperatures at tick over. What climate are you in? what altitude? what is the outside temperature? What is the wind speed? what engine is it? Has it been winterised? bla bla bla

4) Engine running temperature at tick over. See above for typical answers......

I think you have forgotten point number 5. How long is a piece of string.:doh:

You will not have the funds or the time to get the data you require to get a medium reading for all the variables to enable you to start your project. Further to that I am assuming by your questions that you are wanting to take heat FROM the engine rather than give heat TO the engine? As virtually all landrover diesel engines run way too cool and will not give enough heat to open the thermostat at tickover, You will find that there is insufficient heat to allow a landrover at tickover in a mildly cold climate to keep the occupants warm as it is. As such any further heat you take from the engine will have a detrimental effect on the little heat that is there.

spuddog · Jan 27, 2010

Is this for a Wolf, Puma or some old Dog?

Heat Exchanger information needed?

unidave

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ratty

I'm not special I'm limited edition

spuddog

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