What is High Delta T Chilled Water Systems?

Joseph is an HVAC technician and a hobbyist blogger. He’s been working as an HVAC technician for almost 13 years, and he started blogging just...Read more

A high delta T chilled water system is a type of cooling system that uses chilled water to cool air or other fluids. The term “high delta T” refers to the difference in temperature between the water and the air or fluid being cooled. These systems are typically used in industrial and commercial applications, but can also be used in residential settings.

High Delta T chilled water systems are becoming increasingly popular in the HVAC industry. Here’s a quick rundown of what they are and how they work: Chilled water systems typically have two parts: the chiller and the cooling tower.

The chiller is responsible for creating the chilled water that will be circulated throughout the building. The cooling tower works to reject heat from the chiller so that it can continue to operate efficiently. High Delta T systems take advantage of the fact that most buildings have a higher demand for heating than cooling.

By running the chiller at a colder temperature than usual, the system is able to provide more cooling capacity without requiring a larger or more expensive chiller. This also means that less heat needs to be rejected by the cooling tower, which can lead to significant energy savings. There are some potential drawbacks to High Delta T systems, however.

One is that they can put additional strain on pumps and piping due to the increased temperature difference between the circulating water and the ambient air. Additionally, these systems tend to be less efficient at lower temperatures, so they may not be ideal for all applications. But overall, High Delta T systems offer a great way to increase efficiency and save energy in buildings with large heating loads.

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-What are the Benefits of High Delta T Chilled Water Systems

High Delta T Chilled Water Systems (HDTCWS) are designed to provide significant benefits in both energy efficiency and water conservation when compared to other types of chilled water systems. When properly implemented, an HDTCWS can result in a payback period of two to four years. The most significant benefit of an HDTCWS is the potential for dramatic energy savings.

These systems operate by precooling the incoming warm water before it enters the chiller. This reduces the work that the chiller must do, and as a result, energy consumption is reduced by as much as 50%. In addition, because HDTCWS use less water than traditional chilled water systems, they also require less pumping power, resulting in additional energy savings.

In terms of water conservation, HDTCWS can reduce overall water usage by as much as 70%. This is due to the fact that these systems do not require make-up water to replenish evaporated or lost cooling tower water. As a result, there is no need for costly and environmentally damaging treatment chemicals such as those used in traditional cooling towers.

If you are considering implementing an HDTCWS in your facility, there are a few things to keep in mind. First, it is important to ensure that your building’s HVAC system is sized correctly for the new system. Second, you will need to purchase a high quality pre-cooler unit; these are not typically included with standard HVAC equipment packages.

Finally, be sure to factor in the cost of installation when making your decision; while HDTCWS offer significant benefits, they can be more expensive to install than traditional chilled water systems.


A high delta T chilled water system is a type of cooling system that uses water to transfer heat away from a building or process. The water is typically cooled by an external source, such as a cooling tower, and then circulated through the building or process via a pump. The system can be used for both heating and cooling, but is most commonly used for cooling.

Joseph is an HVAC technician and a hobbyist blogger. He’s been working as an HVAC technician for almost 13 years, and he started blogging just a couple of years ago. Joseph loves to talk about HVAC devices, their uses, maintenance, installation, fixing, and different problems people face with their HVAC devices. He created Hvacbuster to share his knowledge and decade of experiences with people who don’t have any prior knowledge about these devices.

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