Heat exchanger Definition and 171 Threads

Im just generally reading through the notes for thermal design for a counterflow double pipe heat exchanger. Is it possible for all temperatures inlets and outlets to be different for this type of flow arrangement? What is confusing me is the temperature profile graph where Th2 appears to...

Homework Statement A heat exchanger consists of two straight co-axial tubes, each of square cross-section. Liquid 1 enters at a rate m1 kg.s-1 at one end (x = 0) of the exchanger at temperature T10, and flows through the inner tube. Liquid 2 emerges at a rate m2 kg.s-1 at x = 0 at...

I'm in need of a specific heat exchanger (a quench cooler). It needs to cool fast (in seconds) and it needs to cool a lot (hundreds of degrees). The coolant is water (making steam). The other side of the heat exchanger is a gas which can be compared to an exhaust gas: there are particles...

Homework Statement What happens when in counter flow heat exchangers, you diminish the mass flow of the low temperature stream? Homework Equations UA = cte m2 = cte Tin = cte tin = cte Q=cm1(tout-tin) Q=cm2(Tout-Tin) Q=UA(Tout-tout)+(Tin-tin) ----------------------...

Hi, I am trying to do a cross flow analysis in FLUENT. Air and water in a cross flow heat exchanger. The fluids do not come in contact. I have modeled and meshed the geometry in GAMBIT. Could someone pls help me with the steps in FLUENT as to how to assign different fluid properties for...

In a geothermal heat exchanger where well water is cerculated up from one well and down another [some distance away] where water treatment is certanly not premissable; what techniques are available to minimize mineral? build-up on the exchanger [tube] walls. [1] I have heard of putting...

Hello, Can anyone get me Heat exchanger thermal formula and equations Tom

Window-type Aircon how to get this in an actual experiment? is it just (mass flow rate of the refrigerant X specific heat X Change in temp of the refrigerant) or (mass flow rate of the air passing thru the heat exchanger X specific heat X Change in temp of the air) or (mass flow rate of the...

is there such thing as condenser/evaporator capacity of an aircon? how to compute for that? thanks!

Homework Statement in practice is is assumed well insulated heat exchangers are adiabatic. With reference to this heat exchanger, carry out the necessary calculations and then give an opinion as to the validity of this assumption. Homework Equations Observation Thotin 55.88, Thotmid...

Hi guys, I've been on a few message boards looking for a solution to my problem, but no one has really been able to help me yet. Here is the problem: Question=================== Hi all, this is my first post/thread, just starting out as a second year chemical engineer and I seem to...

I've got a problem. I'm trying to design a reactor with internal cooling provided by water flowing through tubes directly within the reactor. Basically, it's like a shell and tube heat exchanger with an internal heat source. The problem is that the cooling water is to be evaporated within...

We have this heat exchanger installed in our plant. There are two modules. In module-2 saturated steam is entering @200 Deg C and heating the air from 40 to 80 Deg C. Condensate from module-2 is given to module-1 which preheats the air entering in module-2 from ambient temp (30 Deg C) by 10 Deg...

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...

I'm stuck with the final part of this question. A heat exchanger consists of a bundle of steel tubes each of 25.4mm outside diameter and with a wall thickness of 3mm. Cooling water flows through the tubes with a Reynolds number of 10,000 and a mean temperature of 40'C. Scale deposited on the...

hi ever1, im final year student doing my final year project at uni. It is basically finding justifications to many abnormal outcomes of the test. I was given 2 standard correlations for Nu and F and these are: Nu=0.023 Re^-8 *Pr^(1/3) Fr=0.064/Re^0.2 But when carring out the test I am...

Is there a way to chemically clean this type of exchanger from graphite impurities (tiny particles) ? is possible to chemically remove coke,soot,graphite at all? we clean it with xylene but that doesn't help tnx

I am building an evaporative heat exchanger for my final project in a transport phenomena course in college. I am having difficulty in finding equations that I can either use or derive for my particular type of exchanger. Does anyone have any ideas where I can find or derive equations to deal...

Hello! In heat exchanger (U-type) I've problem with erosion/corrosion at beginning of tubes in heat exchanger,near tube-sheet where steam enters.i suspect cavitation is problem. on tubes there's a channel of erosion in the middle of tube where material is gone and tube is very thin in that...

Adiabatic heat exchanger problem... Please Help! I have this proplem as a homework assignment and I'm a bit stuck as houw to set it up. Here it is: Propane gas enters a continuous adiabatic heat exchanger at 40 degrees C and 250 kPa and exits at 240 degrees C. Superheated steam at 300...

Hello, I have some problems in resolving this exercise. Consider a cylindrical heat exchanger, whose you know all caracteristics (such as : inside diameter, outside diameter and its length). This exchanger is used to cool an oil phase with water. We know the flow of water, its Cp and its...