Sweco Vietnam Contributes to Grand Mercure Hanoi’s Outstanding Energy Efficiency

Owned by a visionary leader in the hospitality industry, the Grand Mercure Hanoi has earned recognition as one of the low energy consumption hotels in Vietnam operated by Accor.

With a remarkable energy consumption rate of approximately 183 kWh/m²/year, the hotel stands out significantly when compared to the group’s average energy consumption of 269 kWh/m²/year. This places the Grand Mercure Hanoi in a distinguished low-consumption zone, utilizing only 60% of the average energy density of Accor hotels globally.

The hotel’s exceptional energy efficiency is the result of a holistic approach to sustainable building practices. Notably, the glazing used in the hotel features double glazing and low-e type, which significantly reduces thermal transfer and enhances insulation.

However, the true innovation lies in the synergy strategy employed in the hotel’s heating and cooling systems. This strategy involves the ingenious use of rejected heat from the hot water heat pump as a valuable resource to improve the efficiency of the chiller system. Specifically, the cold water discharged from the water source heat pump exchanges heat with the hot water discharged from the chiller system before it is released into the cooling tower atop the hotel. This process not only boosts the efficiency of hot water production but also enhances the chiller system’s performance, creating a win-win situation that optimizes energy usage natively.

This groundbreaking concept originated from the outstanding design philosophy of Boydens’ specialists in Belgium, in collaboration with a talented design team in Vietnam.

The teams identified an opportunity to utilize the hotel’s existing large water tank as a massive heat exchanger to manage the inertia heat between different operational modes (cooling and heating) of the hotel. This innovative approach addressed the critical issue of heat balance in a genius way, ensuring maximum efficiency and sustainability.

The Grand Mercure Hanoi stands as a prime example of how luxury and sustainability can coexist harmoniously. As it continues to thrive, the hotel not only provides unparalleled hospitality but also serves as a model for sustainable practices in the industry.