The document summarizes the green building features of the TNG Song Cong factory in Vietnam that achieved LOTUS Silver certification. Some key features include 21.5% reduction in energy use, 41.5% reduction in water use through efficient fixtures, covering 100% of irrigation needs with reused water, 97% of occupied areas having natural light and ventilation, and 49.3% of materials being recycled. The 14,351 square meter factory utilizes efficient lighting, cooling, and envelope insulation to minimize its environmental impact.

1. 031-NR-2.0-NC
TNG Song Cong
Nhà máy phụ trợ TNG Sông Công

2. TNG SONG CONG
Rating System : LOTUS NR V2.0
Building type : Factory
Size (GFA) : 14,351 m2
Certification date: 20/04/2020
Address: Song Cong 1 IP, Bach Quang Ward, Song Cong
Town, Thai Nguyen Province
Owner: TNG Investment and Trading JSC
Green Consultant: GreenViet Consultancy Co., Ltd.
Rating: LOTUS Silver

3. ENERGY SAVING FEATURES
Building Envelope:
• Average window-to-wall ratio (WWR) of 17.5%
• Roof assembly achieving a U-value of 0.73 W/m2.K with a layer of 50mm of
glasswool
• Walls made of panel walls achieving a U-value of 0.43 W/m2.K thanks to a layer
of 50mm of EPS with a thermal conductivity of 0.0233 W/m.K
30.5 % of OTTV Reduction compared to QCVN 09:2013/BXD
Artificial lighting:
• Efficient artificial lighting with an installed LPD of 2.23 W/m2
82.7% of LPD reduction compared to QCVN 09:2013/BXD requirements

4. ENERGY SAVING FEATURES
Building Cooling:
• Use of evaporative cooling (with cooling pads) for manufacturing spaces
• Use energy efficient split-unit systems in the office spaces
45.3 % of COP improvement compared to
QCVN 09:2013/BXD

5. WATER SAVING FEATURES
Water-efficient fixtures:
• WCs: dual-flush with flush volume of 3 / 4.8 liters per flush
• Urinals: flush volume of 2.52 liter per flush
• Taps: flowrate of 4.8 liters per minute
• Showers: flowrate of 3.6 liters per minute
→ 41.5% of water savings through fixtures
Rainwater harvesting:
→ Use of rainwater to cover 100% of irrigation demand

6. MATERIALS & RESOURCES FEATURES
Recycled materials:
• 49.3% of the total value of the materials in
the project is from recycled materials
Non-baked materials:
• 98.53% of non-structural walls are made of
non-baked materials
Local materials:
• 67.5% of all building materials are local
materials
Dedicated recycling storage area:
• 5 bins for paper, cardboards, glass, plastic and metal.
• 2 bins for mercury lamp and batteries/electric waste.
• 1 bin for domestic waste

7. HEALTH & COMFORT FEATURES
Fresh Air Supply:
• Fresh air supply provided in 97% of the net occupied area
External Views:
• 100% of occupied area has external views to the outside
CO2 Monitoring:
• CO2 sensors installed in the meeting room

8. SITE & ENVIRONMENT FEATURES
Vegetation:
• 16.6% of the site area is vegetated
Refrigerants:
• Refrigerant atmospheric impact of 2.32
thanks to split-unit systems using R32
gas with a GWP100 of 675
Green Transportation:
• Private buses are provided for occupants
Access for People with disabilities

9. MANAGEMENT FEATURES
Commissioning:
• Commissioning team appointed to supervise commissioning of air-conditioning
units, fans, lighting fixtures, electrical panels and water fixtures.
Maintenance:
• Preventative maintenance plan was prepared with list of equipment to maintain,
list of maintenance activities to perform and timeline

10. SUMMARY OF THE MAJOR GREEN FEATURES
21.5
%
41.5
%
100
%
of energy use reduction
reduction of water use
through fixtures
of the project’s irrigation
demand is covered with
reused treated wastewater
100
%
97
%
of occupied areas have external
views
of occupied areas are supplied
with sufficient fresh air
49.3
%
of the materials in the project are
recycled materials

11. For more information about
LOTUS Projects, please visit:
http://vgbc.vn/en/lotus-projects

12. FOR FURTHER INFORMATION, PLEASE CONTACT
LOTUS Certification
certification@vgbc.vn
Education and Training
education@vgbc.vn
General enquiries
info@vgbc.vn
or visit: www.vgbc.vn
Telephone: (+84) 966 695 418
Address: 8th floor, Hanoi Creative City Building, 1 Luong Yen, Hai Ba Trung, Ha Noi.