Pioneering in investing in energy efficient equipment
Nguyen Van Chinh, the chief
engineer of Sheraton Hotel Hanoi, said that energy efficiency of a building
relies greatly on many factors such as construction design, the surrounding
environment, equipment, management and application of energy efficiency solutions.
Many energy efficiency solutions have been applied successfully at Sheraton,
such as economical lamps, BAS and Dimmer systems, solar energy, wind energy, central
air-conditioning systems, steam boilers and water saving. The hotel has
installed frequency inverters that work with four primary chiller water pumps,
four cooling water pumps, two chiller fans, two kitchen ventilators, three
hot-water pumps, three AHU motors and six thermal pumps.
Chinh said that frequency
inverters can automatically increase the capacity of four 50W pumps from 20-80
liters to 28-40 liters a second. Frequency inverters have satisfied the need
for power at the hotel and saved 55-59 percent of power, or about 361,720kW
worth VND614 million annually. Because primary chiller water pumps are
complicated, they are not as available as secondary chiller water pumps. Sheraton
Hotel Hanoi is the first building in
In addition, Sheraton has
installed four 22kW cooling water pumps that pump 20-76 liters per second. As a
result, power consumption has reduced from 22kW before to 11-14kW now. This is
the best way to save power in winter, autumn and spring and to best run the
air-conditioning system. The hotel has also installed four improved thermal
pumps that can save 120 liters of oil daily and generate 63kW of cool air per
hour. They keep the ironing area cool without an air-conditioning system. Thermal
pumps have lowered the temperature in the area from 34-35oC before to 26-27oC now.
To expand the success, the hotel has continued to invest in the thermal pump
system and stopped steam boilers. Sheraton is also the first hotel in
In addition, by installing
frequency inverters for ventilators and AHU Sheraton has saved VND221 million
worth of power annually. The 330 frequency inverters working for the
air-conditioning system have also saved about VND70 million annually.
To ensure sufficient and economical
light at lobbies and in rooms, the Sheraton Hotel has replaced all 2,200 bulbs
with compact lamps and fluorescent lamps. The substitution has saved 50 percent
of power worth more than VND30 million annually.
Applying ISO 14.001
Sheraton is not only a luxury
hotel with perfect services but also an ideal venue for international
conventions/workshops. With efforts to apply an environmentally friendly policy
for years now, Sheraton has been nominated for a
Sheraton has led in
installing economical electric appliances and applying the ISO 14.001
international environmental management system. For this to happen, the hotel
has drawn-up a strategy with specific missions such as managing waste water at
Level B, applying strict environment protection regulations to waste oil and
waste printing ink, keeping the environment (including the yards, the walls and
the carpets) clean, and using non-polluting equipment like mini bars. The hotel
has planted more trees to create a green, clean and beautiful environment.
Applying ISO 14.001 is a sound step that has not only generated high business
efficiency but also made the hotel a green building in the heart of the capital
city.
By Song Thuong