Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Bare Tube Evaporator/Prime Surface Evaporator

Bare Tube Evaporator/Prime Surface Evaporator

Bare Tube Evaporator/Prime Surface Evaporator

Hi.... I am working on two projects but struck with Evaporator Length. Needed help to go through that ones.

1. I need to Cool 3,000 Liter of Water from 35'C to 15'C but immersing Cooper Coil into Water. R 134A will be used as refrigerant.
2. 2mm thickness,500L SS 304 Tank that contains milk and want to cool it to 4'C from 20'C. Copper tube has to wrapped around the tank for this purpose.

For both, want to calculate the length and size of bare copper tube evaporator.

RE: Bare Tube Evaporator/Prime Surface Evaporator

WOW. So much info still missing..

Is this a student question?

Do you need to cool this down over six months or 8 minutes?

Are these tanks insulated?

What is the ambient temperature.

The very first thing you need to do is figure out how much energy is in the liquids at the start of the cooling. That calc includes the liquid quantity, what liquid it is, and its starting temperature. This gives the energy content.

Then you need the time to cool it.

Only then can you assess what rate of cooling you have to have.

Keith Cress
kcress - http://www.flaminsystems.com

RE: Bare Tube Evaporator/Prime Surface Evaporator

Thanks itsmoked!!! No it is not student question. That is I'm really going to make for a client.
Vertical Milk Cooling ( 500L of Milk from 20 to 4'C)

The time to cool milk in Milk Cooling Tank is 150 minutes.
Inner Shell Diameter = 250 mm ;
Thick of Shell = 1.5 mm;
Height of Tank = 1000 mm
Top End is Flat with Lid
Bottom End is Cone with 200 mm Height.
Insulation of PU Foam = 60 mm
SS 304 Cladding Thickness = 0.4 mm
Vertical Water Cooling ( 3000L of Water from 35'C to 15'C)

Time to Cool water is 240 minutes
1000 Gallon FRP (Fiber Reinforce Plastic) Tank with 50 mm of Flexi Rubber Insulation.
Bare tube evaporator is to immerse directly into water.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Research Report - How Engineers are Using Remote Access
Remote access enables engineers to work from anywhere provided they have an internet connection. We surveyed our audience of engineers, designers and product managers to learn how they use remote access within their organizations. We wanted to know which industries have adopted remote access, which software they are using, and what features matter most. Download Now
eBook - Managing the Context of Product Complexity Using the Digital Twin
Keeping track of changes to complex products is difficult—think Aerospace & Defense equipment, new generations of commercial aircraft, and software-based automobiles. A new way to managing the digital context of the physical product is required and the answer is the Digital Twin. This ebook explores the opportunity available for Operations and Maintenance for the Digital Twin. Download Now
White Paper - Trends in Industrial Filtration
Substantial progress has been made in filtration technologies in recent years. New filter media materials, designs and processes have led to filters that are more efficient, reliable, compact and longer lasting. This white paper will discuss the various trends that are impacting operational responsibilities of MROs today and the resources that are available for staying up-to-date on the latest filtration solutions. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close