Site Navigation
Home
Services
1. Low cost energy efficiency improvements
2. Energy efficient retrofitting
Technical papers
Optimization of Refrigeration Plant Operation. Engineering Approach, presented at 2010 IIAR conference in San Diego
Operating Ammonia Refrigeration Systems at Peak Efficiency, presented at 2013 IIR conference in Ohrid, Macedonia
What is...
The optimized defrosting
The "floating" condensing (head) pressure
The optimized suction pressure
The optimum condensing pressure
The most efficient way to reduce capacity of the refrigeration plant
Articles
View Articles
Subscription
Add My e-Mail
Change e-Mail Address
Change e-Mail Format
Remove My e-Mail
View Previous Letters
HTML Format
Plain Text Format
Support/Contact Us
Admin
View Subscription Details: Letter ( 08/28/2013 ) - Plain Text Format
Design, installation and operation of the evaporative condensers.
To maximize energy efficiency of the refrigeration plant, evaporative condensers should be designed, installed and operated properly. What does this means?
Many refrigeration plants have multiple evaporative condensers and these condensers should be installed as parallel circuits. Hot gas enters the condenser and condenses into liquid ammonia, ammonia condensate should freely flow out of the condenser. To operate properly, the condenser should be free of liquid ammonia. At parallel installation and operation it can be done if the pressure drop in each condenser is equal. However, this is not possible in real life. Based on design, installation and operation, every condenser has different pressure drops. Liquid ammonia of the condensers with greater pressure drops will back up into these condensers. Heat transfer surface and capacity of mentioned condensers will be reduced. To solve this issue, each condenser should have a drain line trap. Height of these traps should be at least 5 ft (1.5 m). However, many professional engineers prefer to have trap height of 8 - 10 ft (2.4 - 3 m) to make sure that evaporative condensers are free of liquid ammonia.
To maintain energy efficient operation of the evaporative condensers, ammonia system should be free of non-condensable gases. Check proper operation of the air purger on a regular basis. Each purge point should be purged separately. Make sure that purge points are not flooded with liquid ammonia, otherwise non-condensable gases can not be purgered and energy efficiency of the plant will suffer due to increased condensing pressure or increased condenser energy use.
Most likely no other error in refrigeration systems is as often made or has a great an impact on satisfactory performance of the refrigeration plant as the design, installation and operation of the evaporative condensers.
© 2002-2024 SKEnergy.Ca. Designed & Powered by ©
CSNet Inc.
All rights reserved.
latex dresses
|
latex clothes uk
|
latex dresses
|
latex clothing
|