EnCo : ENERGY COMPLEX

About EnCo

Energy Saving

Energy Complex has been designed based on the concept of a prototype of energy conservation including electricity system, air conditioning system, and sanitary system. All systems and devices are pooled to optimize energy consumption by devising a system that consumes approximately 81.30 kWh/m2/yr. while other buildings consume 140 – 200 kWh/sq.m./yr.

Special Wall Panels

Glasses panels help to see outside scenery and reduce heat transfer into the building, but still allow sufficient exposure to natural light, helps to lower the energy consumption of the lighting system. Insulated Glass Units (IGUs) are used. IGUs consist of a laminated glass and a transparent glass attached together, between which is an air gap infused with inert gas of low thermal conductivity. Selecting various types of glass panel for the building facades enables a reduction in the Overall Thermal Transfer Value (OTTV). The sum of OTTV for Towers A, B and C is about 23.82 Watts/sq.m, better than the legal requirement of not exceeding 45 Watts/m2.

Rooftop Heat Insulation

With efficient heat insulation installed on the rooftops, the aggregate Roof Thermal Transfer Value (RTTV) of Towers A, B and C is reduced to 8.55 Watts/sq.m, better than the legal requirement of not exceeding 25 Watts/sq.m. This is complimented by painting the roof areas white in order to reflect as much heat as possible. In addition, an zinc coated aluminum dome is mounted on the rooftop of Tower A to provide shade thereby reducing heat from sunlight.

Lighting Control System around Window Areas

With glass facades, the Complex lighting system can reap the full benefit of natural light to assist tenants. To boost energy saving light sensors and automatic dimmers are installed to control the operation of lighting fixtures around the window areas.

Lift Destination Control

The lift system of Tower A is operated by a destination control application integrated with destination-identified access via RFID cards. The system will analyze data, arrange appropriate traffic and board passengers going to the same floor in the same elevator, thereby reducing redundant workloads of other elevators.

High Efficiency Motor

Electric motors are the most-used devices of all and account for the highest electricity consumption in the Complex. Therefore, the Complex utilizes high efficiency motors. Apart from lower energy consumption, these motors have longer utility life because of low heat loss and less vibration, thus reducing maintenance cost as well.

Occupancy Sensor

Occupancy sensor detects movement in uncrowded areas, such as executive elevator lobbies and lavatories, and executes automatic lighting control accordingly, thereby saving electrical power usage by of the lighting system.

Variable Speed Drive

Variable Speed Drives (VSDs) are installed to regulate suitable motor speeds under each load condition as well as to increase the efficiency of electric motors, water pumps, fans and large air-conditioning systems. The devices reduce motor heat loss as well as start-up surge during the motor soft start, resulting in a decrease in electrical power demand.

High Efficiency Chiller Plant for Air-conditioning System

The Energy Complex chiller plant is made up of centrifugal chillers with 5,400 tons connected capacity to feed chilled water into the air-conditioning systems of all buildings. The Complex has selected for high efficiency chillers, with a Coefficient of Performance (COP) of 6.2, which are superior to conventional chillers.

Automatic Air Cooling Control System

The Complex uses a technology called Variable Air Volume (VAV) installed in its air-conditioning system to control the feed of cool air flow needed in each zone. This system is superior to systems generally used in other buildings because it controls the speed of air handling unit motors in order to generate the appropriate temperature and humidity required for certain zones, thereby saving a considerable amount of energy.

Reusing Condensate Drains from Air-conditioning System

Cool condensate drains are reused for reducing the temperature of incoming external air from the air-to-air heat exchange system, before feeding it into the air-conditioning system. This is an optimal and efficient use of energy, while decreasing the energy consumption of the air-conditioning system.

Alternative Power of Solar Energy

Energy Complex has installed on the rooftops of its 2 parking towers an electricity generation system utilizing solar Photovoltaic panels, capable of supplying about 370 kW of electricity annually or approximately 1.8% of the total energy consumption of the Complex. The system can save approximately 1.7 million Baht per year. It promotes the efficient use of natural resources without adverse environmental impacts.

Intelligent Building Management System

The Energy Complex employs a Building Management System, which is controlled by computerization and information technology, to process data and input for monitoring and managing all operating systems of the Complex as follows:-
• Controlling appropriate air quality and lighting for tenants;
• Controlling all devices and systems to operate efficiently;
• Controlling all devices and systems to operate with optimal energy consumption.
The total building management is enhanced by precise and up-to-date data, with all devices being linked as a single network to help control engineering operations and energy consumption. The Building Automatic System (BAS) is employed to control engineering equipments and energy saving with more than 4,000 monitor and control points. In addition, the BAS is accompanied by the Energy Management System for energy system control, and by the Fire Alarm System and Security System as well.

Regenerative Intelligence Module

For conventional lifts, the power generated by the traction machine is dissipated as heat in the building. Whereas, lift with regenerative function obtains power from electrical supply network, when it travels downwards with heavy load or upwards with light load, the traction machine will be act as power generator and the lift is running at “regenerative mode” which convert the energy generated from the lift motor driven by gravity into electricity for other uses.

Light schedule Adjustment in Parking Building

Light schedule in parking building is adjusted according to real usage for saving energy purpose while maintaining customer safety.