Select an option
Project overview
A global textile manufacturer in Vietnam set out to lower energy costs and reduce its carbon footprint, while tackling challenges in recovering heat from wastewater.
Thermax carried out an energy audit and deployed a heat pump-based system to capture and upgrade waste heat for reuse. This improved overall thermal efficiency, reduced reliance on conventional fuels, and delivered strong energy savings with a quick return on investment.
Challenges
- A global textile manufacturer in Vietnam aimed to reduce its carbon footprint and energy costs. Recovering heat from hot wastewater was a challenge due to fluctuating pH, contaminants, and inconsistent temperatures.
Solution
- Thermax conducted a walkthrough energy audit and proposed a 140 kW electrical heat pump integrated with a rotary heat exchanger. This setup captures heat from hot effluent and upgrades it to a usable temperature (65.8°C to 75.5°C), reducing the need for natural gas- based heating. The heat pump uses ambient water and electrical energy to efficiently transfer enhanced heat to process water, minimising water loss and improving overall thermal efficiency in the plant.
Result
- The solution achieved 1,927 tonnes of steam savings, 148 tonnes of CO₂ reduction, and an ROI of under two years, with a COP of 3.4.
Explore our case studies
Case study
Thermax’s Combipac boilers enable green steam generation for a coffee manufacturer
Read the case study
