Contractor

Name : Star Garment Group / Komar Brands

 https://www.star.lk/

Construction Manager

Name : Jordan Parnass Digital Architecture

 http://www.jpda.net/

Stakeholders

Function : Thermal consultancy agency

Steven Winter Associates

 https://www.swinter.com/

Function : Certification company

Passive House Institute

Dragos Arnautu email: [email protected] address: Rheinstrasse 44-46, 64283 Darmstadt, Germany

 https://passivehouse.com/

Function : Designer

Vinod Jayasingh Architects

Energy consumption

• Primary energy need : 344,00 kWhpe/m².year
• Primary energy need for standard building : 680,00 kWhpe/m².year

Calculation method : Other

CEEB : 0.0001

Breakdown for energy consumption : The following values represent the renovated building's performance: Cooling and dehumidification demand: 183 kWh /(m2a ) Cooling load: 21 W/m2 Calculated according to PHPP The primary energy demand of 344kWh/m²a includes cooling, dehumidification, auxiliary and household electricity as well as domestic hot water, and is divided as below: - 27% cooling (sensible) - 20% Lighting - 20% Sewing Process Loads - 16% PCs / Office equipment - 7% Cooling (latent) - 6% Aux. elec & Summer ventilation - 4% Domestic Hot Water A breakdown of the energy consumptions before the renovation is not available. Only the final (260 kWh/m2a) and primary energy (680 kWh/m2a) demands could be verified and presented.

• Initial consumption : 260,00 kWhpe/m².year

Envelope performance

More information :

Exterior wall: U-value = 0.329 W/(m2K)
Basement floor / floor slab: U-value = 5.795 W/(m2K)
Roof: U-value 0.182 W/(m2K)
Frame: Gutmann F50, 1,81
U w-value = 1.81 W/(m2K)
Glazing: U g-value = 1.2 W/(m2K) - g -value = 22 %
Entrance door: U d-value = 1.14 W/(m2K)

Indicator : n50

• Air Tightness Value : 0,78

Real final energy consumption

Final Energy : 120,00 kWhfe/m².year

Real final energy consumption/m2 : 110,00 kWhfe/m².year

Year of the real energy consumption : 2 018

Systems

Heating system :
• No heating system
Hot water system :
• Individual electric boiler
Cooling system :
• Fan coil
Ventilation system :
• Double flow heat exchanger
Renewable systems :
• Solar photovoltaic
• Renewable energy production : 10,00 %
Other information on HVAC :

5 units with heat and humidity recovery
Average for all 5 ventilation units:
72% heat recovery
70% humidity recovery
0.7Wh/m³ electric efficiency
Manufacturer: DESICCANT ROTORS INTERNATIONAL PVT LTD., ARCTIC INDIA HOUSE, 20, RAJPUR ROAD, DELHI - 110054 (INDIA)

Additional cooling and dehumidification (after the ERV) is beeing done via fan coil units which cool the air to a very low temperature in order to dehumidify it. The air is then reheated using Heat pipes with Heat Recovery. The heat pipes work in collaboration with the solar pannels on the roof which save costs in comparison with the classic electrical reheat systems.



Generation of renewable energy: 48340 kWh/a which is 19 kWh /(m2a) based on the projected area of 2549 m2
Renewable energy demand (PER demand according to PHPP): 164 kWh /(m2a) based on the used area on cooling/dehumidification installation, domestic hot water, household electricity and auxiliary electricity

Urban environment

The project is located in a low-rise industrial park adjacent to the airport. 

Trees provide some shade but the majority of the building is exposed to the sun.

Product

Gutmann F50, 1,81



Gutmann

 https://www.gutmann.de


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Passive house curtain wall system with 50 mm or 60 mm face width.

Passive house viability in accordance with IFT directive WA-15/2, in combination with the required service ability
Identical profiles for mullion and transom, straight cutting, no transom profile notching: minimal off-cuts, rational manufacture and installation
- Joint connector technology for gap-free connection between transom and mullion
- Identical width of inner glass gaskets at mullions and transoms
- Low edge radius for visually flawless transom connection
- Maximum glass loads up to 600 kg, depending on wind loads

This product was well accepted.

Construction and exploitation costs

• Total cost of the building : 2 400 000 €

Comfort

Health & comfort : Careful design and engineering of the building systems and enclosure ensures that workers enjoy year-round comfort in a workspace that provides abundant natural light, low humidity, filtered fresh air, and maintains temperatures near a constant 24°C (77°F).

Because the Star Innovation Center is a milestone in industrial energy efficient retrofitting in a tropical monsoon climate, the Passive House Institute awarded the EnerPHit Pilot Project Certification. Thorough testing of the airtightness and remote monitoring of the ongoing energy usage provide quantitative confirmation of the building performance, confirming projected operational cost savings for the client and vastly upgraded workplace environmental standards for the employees.

GHG emissions

• GHG in use : 70,00 KgCO₂/m²/year
Methodology used :

CO2 factors GEMIS 4.6