3 replies to this topic

[Awas]

Respected Admins and Friends

I am posting this post second time .I did not get help from any one . Please help me to sort my problem .I am doing a master thesis on the Design of Water to Air heat Exchanger for Heating a Building or Room .My task is that I have to utilize the hot water whose intel temperature in a heat exchanger is Tin=80 C which has to exchange with air at an inlet Tempertaure T air =20C.Outlet tempearture of Air is  Tair, out = 26 C which is for our requirement to heat a room. For this I have to calculate the no of tubes , heat transfer surface area and lenght of tube required . After getting my result I have to order it and install it practically for a heating system.I want to calculate fins heat transfer also . I dont know how to find it . I have not any resourse related to fins type water to air heat exchanger .

 

I have the follwoing queries which is given as :-

 

1.How I have to find these  Calculation (no of tubes , length and surface area )

2.Is induced fan is suitable for this application .How I use  fan calculation in LMTD or NTu Method.

3.I am very confused about Fin calculation .Please give me a reference according to this .

3.What should i take Air inlet vellcotiy and water inlet velocity.

 

It would be really appreciate if you please send me the Excel file calculation and realted any reference pdf  books here.

 

Thanking you in anticipation

 

Regards

 

Awais

[breizh]

http://www.wlv.com/p...ok/databook.pdf

 

http://www.wlv.com/p...data/db3ch6.pdf

 

Consider this resource to start your project.

Note : did you try google ?

 

Breizh

Edited by breizh, 17 February 2014 - 11:39 PM.

[Awas]

Breizh

 

Thank so much to give me reference of above mentioned Wolveriene book  . Yes I have searched from the goolge and I have also studied the LMTD and Effectiveness NTU mehtod for design of heat exchanger .My supervisor told me that  you have  to design finned heat exchanger (Water to air ) .But I did not find most examples or solution of finned tube heat excahnger .It would be really appreciate if you send me excel file or source of solved examples of finned heat exchanger .

[breizh]

Awas ,

To get support you need to submit your work and let us know your difficulties . We cannot do your assignment .

Hope you understand.

 

http://www.cheresour...rs-thumb-rules/

 

Breizh

Edited by breizh, 19 February 2014 - 02:41 AM.