Lhasa Bathing Project

Tibet is known as the "roof of the world" and a "human forbidden zone" due to its harsh environment and thin air, which makes it uninhabitable. Harsh weather conditions make it difficult to apply high-tech equipment and instruments in Tibet. Therefore, in the past, traditional coal, oil, and gas boilers were used for heating in Tibet. However, traditional equipment has safety risks such as fire, explosion, poisoning, and lack of oxygen, and consumes high energy.

In recent years, with the advancement of science and technology and the rise of low-carbon awareness, more and more new heating equipment have begun to be applied to Tibet. For example, a bathing center located in Chengguan District, Lhasa City has chosen BANDON’s air source heat pump equipment to provide heating and hot water supply.

1. Project Overview

The project is located in Chengguan District, Lhasa City, Tibet Autonomous Region, in the center of Lhasa, close to the Potala Palace, and belongs to the plateau temperate semi-arid monsoon climate zone. The solar radiation is strong, the air is thin, the temperature is low, the temperature difference between day and night is large, winter and spring are cold, dry and windy, and the annual frost-free period is 100 to 120 days.

The bathing center is located at an altitude of 3,500 meters, with a heating area of 5,400 square meters, a heating requirement of 26 degrees Celsius, and a daily supply of 200 tons of hot water. The heating terminal is floor heating + wind plate.

2. Project Background

The bathing center was originally opened on the sixth floor of a business district on Beijing Middle Road in Lhasa. It used a certain brand of units for heating and hot water supply. As the business expanded, the business became increasingly popular. The original area could not handle more passengers. A new bathing business has been opened on the third floor of the circle.

In 2021, the bathroom project on the third floor started to be renovated. After long-term on-site inspections of BANDON's large-scale heating projects in Tibet, Ningxia, Gansu and other places, the user's hard power heating fully recognized the BANDON brand and finally selected BANDON units. The user also learned that BANDON had developed the industry's first ultra-low-temperature commercial DC inverter (40 HP/80 HP) specifically for plateau areas as early as 2019, which was released and applied offline, solving the problem of strong heat attenuation and water quality and voltage fluctuations in high-altitude and cold areas. It has adaptability issues and can be stably applied to high altitudes of 5000m and cold temperature areas of -35°C, bringing clean heating to remote areas on cold plateaus! Opening up a new era of "private aircraft only" in the industry!

3. Equipment Selection

In order to meet the dual needs of high-quality bath heating, based on the building load and temperature demand, three 80 HP inverter heat pumps and three 80 HP hot water supply heat pumps are selected for this project.

4. Equipment Installation

The units are installed on the rooftop platform of the business district. Considering the dense number of shops in the business district and the large flow of people, anti-vibration and anti-noise measures are taken during installation to ensure that the unit operates stably without affecting store operations and creating a quality business environment.

It is worth mentioning that this project uses BANDON ultra-low temperature and ultra-quiet air source heat pump unit, which can operate stably even in the extreme environment of -35°C; the minimum noise is as low as 58dB, allowing users to fully enjoy the tranquility of bathing and leisure. After the installation and commissioning of the unit is completed, the terminal floor heating and fan coil units are seamlessly connected to save costs.

5. Operation Status

The project was installed and commissioned in March this year. It adopts a water circulation operation system to transmit heat from bottom to top, keeping the feet warm and the top cool, with a constant temperature. It meets the physiological needs of the human body, makes heating healthy and more comfortable, and promotes high-quality bathing heating.

It is expected that the indoor temperature in winter will be around 26°C, and the 60-ton water tank can supply up to 200 tons of hot water per day, meeting the heating and hot water supply needs of the owners. The heating is stable, the water temperature is comfortable, and the energy-saving effect is much higher than using hot water equipment such as boilers.

6. Party A’s Evaluation

Customer satisfaction is BANDON’s biggest mission. After the installation and commissioning was completed, we also conducted a follow-up visit to the owner and received the following evaluation:

① Mobile phone applet control, convenient and fast, simple and easy to understand;

② Noiseless operation, more comfortable heating, and customer satisfaction;

③Backend monitoring to quickly determine the status of the unit, and after-sales service is guaranteed.

7. Product Advantages

This project uses the BANDON full DC high-power ultra-quiet inverter heat pump unit, which achieves strong heating performance, significantly improves the heating problem in winter, and has little attenuation in heating capacity under low-temperature conditions. It exceeds the national first-level energy efficiency. Compared with ordinary ON/OFF units, the energy saving effect is increased by more than 20%, which is well received by users. Its advantages are as follows:

·Low Temperature and Strong Heat, Super Energy Efficiency

It adopts Hitachi scroll ultra-quiet compressor specially designed for ultra-low temperature working conditions, high-speed scroll + EVI technology, breaking through the low-temperature limit geographical restrictions; axial flexible adjustment, with high volumetric efficiency; rare earth permanent magnet motor, Sine wave speed regulation technology, stepless speed regulation, high efficiency and energy saving;

·Ultra-wideband Operation, Easy to Use All Year Round

Ultra-wide operating ambient temperature, for heating in winter, the ambient temperature can be as low as -35℃, and for cooling in summer, the ambient temperature can be as high as 55℃; in the cold and summer seasons all year round, say goodbye to hot and cold seasons, easy application without stress; ultra-wide outlet water temperature, The maximum outlet water temperature of the unit is 60℃; the ambient temperature is -20℃, and the outlet water temperature is as high as 55℃;

·High Efficiency and Energy Saving 20%

DC inverter V+Turbo innovative technology, the performance exceeds the national first-class energy efficiency standard, extremely high partial load efficiency, and operating costs are saved by 20% compared with ON/OFF units; the heat pump can operate with a large temperature difference of 15°C, and automatically reduces the frequency to low output and low water flow in warm weather operation, saving 30% of water pump power consumption;

·The Fourth Generation Electronic Control Technology Provides More Stable Performance

Texas Instruments TI high-speed computing chip from the United States and Infineon semiconductor components from Germany provide more stable performance; strengthen the electronic control program for ultra-low temperature operation and increase the range of low-temperature water; precise defrost logic, intelligent defrost without delay, low-frequency constant temperature operation, and evaporator heat exchange The machine load is low and frost is reduced by 80%;

·Deep Sea Level Silent Technology

Keel-type DC fan motor and rare earth permanent magnet rotor provide the best performance; independent air chamber, large air volume and high-pressure head fan, equipped with aluminum-magnesium alloy blades, large air volume and low speed, bringing extremely low noise, low-frequency operation of 58 decibels; excellent inverter control technology, intelligent stepless uniform speed adjustment; multiple compressors operate cooperatively, and the failure of one system module does not affect the operation of other systems;

·Intelligent Remote Control

It comes with smart cloud service, which can record as soon as it is powered on, handle remote faults, and solve after-sales problems; the smart wired controller has three operating modes: automatic mode, strong heat mode, and silent mode. The mobile app is easy to operate and truly achieves Intelligent configuration;

·Small Unit, Large “Power”, Space Saving up to 35%

Through the design concept of minimizing the footprint, BANDON saves 35% of the floor space than traditional units. At the same time, low-temperature, high-frequency and strong heating technology further reduces the number of installation units, greatly reducing the installation area and construction period of the units, making it the best choice for project installation.