Case Study: Energy Savings with Tongyi’s Hybrid Air-to-Water Heat Pump System at Qijiang Wangliang Hotel, Chongqing

At the Qijiang Wangliang Hotel in Chongqing, China, a reliable and energy-efficient hot water system was a top priority. The hotel, with approximately 120 guest rooms, required a solution that could provide consistent hot water while minimizing energy costs. The solution was found in Tongyi’s advanced hybrid air-to-water heat pump system, which offered exceptional energy savings and high-performance hot water delivery.

Project Overview

The project aimed to upgrade the hotel’s hot water system to ensure that guests could enjoy reliable and comfortable hot water throughout their stay, even during peak demand periods. The system configuration included four 42 kW circulating heat pump units, 30 pressurized water tanks (totaling about 13,650 L), and four 18 kW electric water tanks. This hybrid air-to-water heat pump system was designed to offer robust redundancy and efficiently manage sudden demand fluctuations, keeping water temperatures stable for optimal guest satisfaction.

Energy Savings and Efficiency

By utilizing Tongyi’s hybrid air-to-water heat pump system, the hotel significantly improved its energy efficiency. The system’s intelligent digital controls continuously monitor and adjust temperatures, ensuring that hot water is always available while reducing unnecessary energy consumption.

Integrating heat pumps with electric water tanks allows the system to quickly respond to spikes in demand, reducing reliance on traditional heating methods and lowering overall energy usage.

The hybrid air-to-water heat pump design ensures that both the heat pumps and electric water tanks work together smoothly. This balance maximizes energy savings while maintaining high performance. The pressurized water tanks act as buffers, reducing demand fluctuations and easing the load on the heat pumps. This helps prevent excessive cycling, reduces system stress, and extends the equipment’s lifespan.

Guest Comfort & Reliability

Ensuring reliable hot water supply was key for the Qijiang Wangliang General Hotel. Tongyi’s hybrid air-to-water heat pump system guarantees that hot water is always available, even during peak demand times. By integrating multiple heating sources, the system keeps water temperatures stable and provides continuous comfort for guests. This innovative solution effectively balances guest comfort and energy savings.

With Tongyi’s hybrid air-to-water heat pump system, the hotel has achieved significant energy savings without sacrificing guest comfort. The system delivers a steady hot water supply while minimizing energy waste, making it the perfect choice for hotels and commercial properties looking to boost sustainability and cut operational costs.

This project highlights the benefits of Tongyi’s hybrid air-to-water heat pump technology—delivering energy savings, improving guest experience, and helping businesses reduce energy expenses and environmental impact.

Heating Infrastructure Upgrade

Hospitality

System Configuration:

• 4 units of 42 kW circulating (heat pump) machines

• 30 pressurized water tanks (455 L each; total ≈13,650 L)

• 4 electric water tanks at 18 kW each