GoalOptimize cooling water treatment to reduce scaling, improve chiller efficiency, and lower annual energy costs through automated control.
3.9°C
reduction in condenser approach temperature
⬆
Approach temperature of 2.5°C at 64% load
⊘
The need for further descaling
$
Annual energy cost savings
GoalOptimize cooling water treatment to reduce scaling, improve chiller efficiency, and lower annual energy costs through automated control.
<h6>Customer Challenge</h6> <p>Our client, a premier multinational hospitality chain with a global portfolio of full-service hotels and resorts, faced soaring energy costs due to scaling, fouling, and suboptimal cooling water treatment in their two chiller plants—200 TR X2 and 90 TR X1. The cooling tower system, which is directly linked to the chiller, suffered from severe scaling due to high water parameters and ineffective chemical treatments. This led to frequent descaling and higher-than-expected energy consumption.</p> <h6>Recommended Solution</h6> <p>To resolve these issues, we deployed NCH aquaDart's cooling water management program, complemented by a range of chemicals including CA31155, MB215, CBD 92, Actichlor, and BioExile L:</p> <ul> <li>aquaDart was installed to continuously monitor and control critical parameters such as PTSA residual, pH, conductivity, and ORP.</li> <li>CA31155 was used in a demand-based dosing regimen to manage scale formation.</li> <li>CBD 92, an online descaler, removed existing scale, significantly reducing the chiller's condenser approach temperature from 7.5°C at 44% load to 3.9°C at 74% load within 4 months.</li> <li>Additional improvements included ORP control for hypochlorite, dedicated cooling tower loop management, and regular dosing of MB215 to control microbial growth. The system's approach temperature improved to 2.5°C at 64% load with no further need for descaling.</li> </ul> <h6>Results Achieved</h6> <ul> <li>Significant reduction in condenser approach temperature from <strong>7.5°C at 44% load</strong> to <strong>3.9°C at 74% load</strong> within 4 months.</li> <li>Further improvement to an approach temperature of <strong>2.5°C at 64% load</strong>.</li> <li>Elimination of the need for further descaling.</li> <li>Substantial annual energy cost savings.</li> </ul>
3.9°C
reduction in condenser approach temperature
⬆
Approach temperature of 2.5°C at 64% load
⊘
The need for further descaling
$
Annual energy cost savings