Packaged Cooling Systems
— Closed-Loop System with Plate Heat Exchanger

DS – Delta Dry System

Closed-Loop System with Plate Heat Exchanger

Cooling tower heat exchanger systems beat closed-circuit cooling towers for economy and efficiency.

Certain processes require a closed-loop, whereby the process water for cooling does not come in contact with the atmospheric air. This preventsthe cooling water from picking up particles that may not get filtered or even dissolved gases. Closed-loop cooling requires more energy and has higher initial and life-cycle costs than an open cooling tower, but provides an added protection to expensive processes or chillers being cooled.

For closed-circuit cooling, Delta recommends a cooling tower plus a plate heat exchanger system. The skid-mounted plate heat exchanger provides a closed circuit on the hot side of the heat exchanger. The noncorroding Delta cooling tower feeds the cold side of the plate heat exchanger.

The advantages of this system over a closed-circuit cooling tower (usually galvanized sheet steel and galvanized steel coil inside a cooling tower box) are:

  • Cost - Typically costs less to purchase and operate
  • HP - Less total HP required; green solution
  • ASHRAE 90.1 - Performance requirements for heat rejection equipment show closed-circuit cooling towers use 2.5x more HP
  • Warranty - Delta Cooling Towers has 20 year casing warranty versus 1 year on galvanized steel
  • Expandability - Heat Exchanger can handle future load increase by adding plates
  • Maintenance - Heat Exchanger has stainless steel plates and is much more accessible than coil for easy cleaning
  • Weight - Delta tower is 3-7 times less weight saving rigging and structure costs
  • Install Flexibility - Heat Exchanger skid can be placed indoors without need to maintain Glycol solutions necessary with outdoor coil
  • Water Treatment - Easier and much less risk with engineered plastic cooling tower
  • Replacement Cost - Galvanized steel coil replacement cost (labor and material) often exceeds initial unit cost of a closed circuit cooling tower
  • Downtime - Delta system prevents costly downtime. Corrosion is only delayed with galvanizing and wet/dry operation, chemicals, PH fluctuations, salts and other atmospheric conditions, which can lead to premature failure

The Most Durable Corrosion-Proof Cooling Towers Available
Available towers image

Corrosion Proof & Seamless Cooling

Our cooling towers are one piece, so there are no problems with seams, welds & patches. They are also rust & corrosion proof.

Available towers image

Low Maintenance
and 20-Year Warranty

Our overall maintenance is minimal and the tower shell does not require preventive maintenance which lowers cost.

Available towers image

Save
H2O

Water chemistries and engineered plastic cooling towers combined are an extremely effective solution to water conservation.

Available towers image

Low Sound &
Other Special Options

The noise pollution of commercial HVAC equipment has become an increasingly unwanted problem for communities.

Available towers image

Made in
USA

The term “Made in the USA” speaks of quality, excellent craftsmanship and a superior product.

Get a quote

From our low maintenance design to our manufacturing process to excellent customer service, we're sure you'll be pleased with our superior cooling towers, every step of the way. Get a quote