Radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in cars, buildings, and electronics.A radiator is always a source of heat to its environment, although this may be for either the purpose of heating this environment, or for cooling the fluid or coolant supplied to it, as for automotive engine cooling and HVAC dry cooling towers. Despite the name, most radiators transfer the bulk of their heat via convection instead of thermal radiation.
Hello, I'm new to this forum and I have a very important question about engineering design.
I am currently working on my final project in my undergraduate study. The project that I am doing is about waste heat recovery design. My case study is a plant with a couple of ovens. The plan is to...
Let us assume we possesses a line radiator. It's extent is infinite and it radiates 360*.
As far as I understand, an expanding spherical wave of order 0 is not dispersive. I assume an expanding cylindrical wave of order 0 would possesses dispersion, however I am not certain.
Could any...
Hello, I have a question about airflow through a car radiator which has a plate on the discharge side with holes cut for fans. There are fans mounted on there but they aren't being used. And the car is moving.
Would the airflow increase or decrease with the plate on there?
We are having a...
Ok hopefully one of you can help me out. I have a 68' bug that I recently converted to watercooled with a 2.0 vw engine with a turbo. I have been trying to figure out a way of effectively cooling the motor. I have a single row radiator approx 26'' X 20". I have mounted it in the back of the car...
Hello all,
I have some performance data on a particular radiator, and I want to model the system and see if I can't get a simple analytical model to match the data. The problem I'm having is with the air flow rate through the radiator. The only relevant data made available to me is the...
Homework Statement
Does a blackbody at 200K emit twice as much total radiation as when its temperature is 100K?
Homework Equations
N/A
The Attempt at a Solution
I'm not sure, but I think it is yes because if the temperature is doubled, then the energy of the photons will be...
I need to compare two remote heat exchangers (HE) of the cross-flow finned tube air & glykol 37%. The HE vendors provided me with basic stat sheets from factory testing. My issue is that the volumetric flow rates for the factory testing are different from the cooling circuit I have to place the...
My first posting, so apologies if this is in any way inappropriate to the forum/section.
I am asking here for some scientific input to this question about a cooling system as, for example found in a classical motor vehicle; what is the likely relationship between coolant flow and heat...
Any suggestions anyone? Really struggling with this one !
Homework Statement
A domestic radiator is 2.5 m long and 0.6m high and is sited in a room whose temperature is 14C. Hot water is circulating through the radiator at a temperature of 90c. The radiator is convecting heat from both sides...
I am working as an intern at a biodiesel plant and we are looking into setting up solar heating to reduce the amount of electricity we are using to heat up our oil during the various stages of the process. Of course, this is only one of many projects going on at the college, so the budget is...
Im working on designing a non contact thermal instrument. Need to estimate how much current I'll get from the photodiode.
First background: I'm working from Planck's law and Stephan's law. The temperature of my target will be between 1250 and 1750K. From Stephan's law I've worked out this...
After reading the thread "how many watts does the human body use?"
I calculated that my body requires 86 W of energy on average throughout the day.
However, I am wondering how much excess energy my body radiates as waste heat (and blackbody radiation) ? Obviously this depends on a lot...
I am putting a water cooled engine in a Porsche and want to design a custom radiator. How do I calculate the area necessary, air flow across this area, and temperature under different conditions assuming the power rating of the motor is 250 HP and is probably 35% efficient at best ? I have a...
Trying to see if it is viable to capture waste heat from radiator of cars(s) to pre-heat water heater and or radiant floor. Off grid homeowner here and every little bit of energy counts!
Enclosed garage. R-50 SIP panel "house" to pull nose of car into, Solar-powered fan to draw air over a...
Ive got an assignment of word problems and can't seem to figure this one out:
A 6 Litre car radiator is 2 thirds full of water. How much of a 90% antifreeze solution (90% is alcohol by volume) must be added to it to make a 10% antifreeze solution in the radiator?
I came up with the...
I was reading a discussion about heaters on another forum ages ago, one person claimed that there is a large difference in cost when running a thermostatically controlled oil filled radiator than an electric fan heater. Another person told him to contact the Institute of Physics and inform them...
What is the freezing point of radiator fluid that is 50% antifreeze by mass? for water is 1.86 .
I used
delta: K_fc_m
First I found the molar mass of ethylene glycol to be 62.07 g/mol. Then I multiplied 1/62.06 by 500g/1 kg to get 8.06 mol/kg for cm. I plugged these values in and got 15 C...
Today while sitting parked in my FIL's van, the one I just put a new thermostat in, but failed to really test to see if it would overheat? A couple miles down the road, it pegs the temp guage. I put the OEM of 192* instead of 160* because it wasnt passing smog, they said the computer this/that...
A room has a need for 2000W for an outside temp of -20 C. A radiator with this capacity is installed and receives water at 90 C, which exits at 70 C. But because of some error only 40% of the intended water amount flows through the radiator. The water temp delivered to the radiator is adjustet...