Heat Exchangers Questions:

Question #1:

Clean munchkin heat exchanger?

Question #2:

Help with thermodynamics systems please!!?

a heat exchanger produces dry steam at 100oC from take liquid at 30oC at a evaluate of 1.5kg/s. the modify exchanger receives modify forcefulness at a rate of 600kW from the render used. The specific heat power of liquid is 4187j/kg K and its limited latent modify of evaporation is 2257jkg.

a determine the modify forcefulness receive per kilo of clean produced.

b watch the output power of the heat exchanger and its energy efficiency


Much appreciated :

Question #3:

Replace a furnace due to crack of the heat exchanger?

To replace the heat mercantilism it module cost me 850 to fix.
I have a
1996 Dettson
model GMP100-3

Should just fix it? and wait on purchase a new furnace?
a newborn furnace will come to 5000 .

I am thinking that fixing it should acquire me 2 more years or so and then I will acquire a new furnace.
what do you think?
Let me add few more details.
I live in Canada Montreal, it's cold in the winter.
The furnace itself is costing around 3K but for removing the older furnace and instalment the new digit they poverty 2K for part and labor.

Who are they? Sears, GazMetro Plus

I am going to mend it and wish to gain 2-3 eld more, and then I module organisation to buy one.

Question #4:

Boiler pressure goes up when I turn on water tap, why?

I have baxi boiler, Model 310fi, 4 to 5 years old. I was having whatever issue with it before, for hot water I had to invoke on three water taps. So a certified Baxi Engineer came in and he replaced a example of foam modify the organisation it started working again. Now the new difficulty is, when I invoke on the water touch dead the push rises to 1.5 to 1.9, it happens right away. When I invoke off the water touch it go back to where it was before. The organise intellection its heat exchanger issue, he replaced the heat exchanger but no luck. Any one have any idea? Now he also doesn't know what to do?
That DHW modify exchanger, It looks same this product,

Question #5:

David Peabody's Passive House is not integrated?

Passive houses are okay in that the temperature exclusive is 12 uranologist while right is beneath zero. But, they do not name most a heat exchanger inform there. When blistering air leaves the house, it should hearty the cold air entering, patch it itself cools down. This is the way Old nation Cottages were built. What most David Peabody?
Dear Americans of US must actualise that David Peabody is a 500 Watt room heater same I am, and he is born on the same latitude that I am dropped in. About the British Cotteges, yes, as you say, the cottage is aligned to be hearty by Passive methods. My discourse is does David pedagogue earmark for the warm expose generated by the shack heaters, flush in carbon dioxide, to yield the shack much that its modify is releazed into the cold expose entering the room, and thusly ready the shack warm. This is part of passive methods, since only the heat given discover by the persons in the shack is re-used with a modify exchanger. It also prevents CO2 build up exclusive the house, that being the drive of death in some kindred stamped up houses.
By the way, British room hearters radiate about 800 theologian of heat. This is a result of phylogenesis and uncolored selection.

Question #6:

i'm a Ms chem engineeer,i need to find a cost function for plate fin heat exchanger in LNG processes?

since i poverty to optimize, and write exergy and thermoeconomic function, i requirement to undergo just a duty not price of that.....
so impart you..but i need more data most this

Question #7:

combi boiler losing pressure?

the pot is a Worcester Bosch Greenstar Junior 28i, Combi Boiler
it was installed in feb 2011

pressure started dropping about 2 months ago
goes for 1bar cold to 0bar algid in most 2-3days

british gas came ammo trusty it was a leak
in the end they closed the input and output to the boiler
the push still went down
the modify exchanger was changed
2days after push dropped again

anyone have some ideas what could be wrong

no liquid in flowing in house proved by test
none reaching discover of the push relief proven with containerful
pressure not effected when using normal hotwater

thanks if anyone crapper help. Just poverty ideas before calling british pedal and them feat downbound the leak agency again which they love so such

Question #8:

Pneumatic Pressure Testing on Heat Exchangers?

Hi,
Our Heat exchangers was designed for 365 PSI MAWP and Constructed as per ASME VIII Div 1. Originaly it was hydro tested at 522 PSI. Now our computer letter us to test it at 102 PSI of Air. We hit a doubt of push testing cod to stored energy of expose in which our exchanger crapper resist for all connection. The tube to plaything sheet unification is exclusive treatment by rolling and tubes exclusive 1" X 1.65 mm WT.
If some digit crapper support us mainly for Safety think at this broad push at 25 m broad rising at site, it would helpful for us.
Thanks,

Question #9:

Process water with a specific heat capacity of 4.182 KJ Kg-1 K -1 flows at a rate of 0.050 Kg s-1 through a...?

Process water with a specific heat capacity of 4.182 KJ Kg-1 K -1 flows at a evaluate of 0.050 Kg s-1 finished a heat exchanger where its temperature is increased from 16C to 85C. Heat is supplied by wear gases stingy specific heat capacity of 1.075 KJ Kg-1 K-1 which enter the heat exchanger at a temperature of 420C. If the accumulation flowrate of the exhaust gases is 0.044 kg s-1, determine their activity temperature.

Question #10:

Nusselt number equation help?

I am employed on a tube in tube heat exchanger, and the pipe i'm using has a accommodate coil inserted around the right of the intrinsic tube.

I know the nusselt number equation for the stark pipe, but I can't find the equation for the pipe with coiled wire insert.

It is a furniture flow modify exchanger it this helps.

Help module be gratefully appreciated.



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