edge for affordable green homes ......2019/04/01  · nenada nenadic tanasic, msc.eng. leed ap, edge...

Nenada Nenadic Tanasic, Msc.Eng.

LEED AP, EDGE Expert

Company EYWA

EDGE FOR AFFORDABLE GREEN HOMES: OPTIMISATION OF WATER USE AND SOLAR

HEAT GAINPhoto

1st Annual KGBC Green Building Conference

“Sustainable Housing and Green Living”

WHY GREEN HOMES?

BENEFITS FOR THE RESIDENTS

1.CREATES A MORE HEALTHY AND COMFORTABLE LYFESTYLEhomes are built to be healthy providing clean indoor air incorporating safe building materials

2. CUTS UTILITY, MAINTENANCE AND REPAIR COSTSUsing LESS ENERGY and WATER, lower utility bills each month

3. INCREASED MARKET VALUEcertified green homes are selling quicker and for more money than comparable non-green homes

4. INSPIRES PRIDE OF OWNERSHIP

5. PROTECTS THE PLANET

Excellence in Design for Greater Efficiencies

EDGE is a green building platform that includes• Green building standard• Software application• Certification program for more than 140 countries

EDGE certification is awarded when minimum efficiencies are achieved:

• 20% savings in operational energy• 20% water savings• 20% savings in embodied energy

WHAT is EDGE ?

WATER RESOURCE INSTITUTE (WRI) REPORT ON WATER STRESS https://wriorg.s3.amazonaws.com/s3fs-public/aqueduct-water-stress-country-rankings-technical-note.pdf?_ga=2.39292771.1182158600.1543822870-2022652431.1543394662

Country-Level Water Stress in 2040 under the Business-As-Usual Scenario

https://www.wri.org/blog/2015/08/ranking-world-s-most-water-stressed-countries-2040

EDGE FOR HOMES – WATER EFFICIENCY MEASURES

WATER SAVINGS ANALYSIS IN ONE RESIDENTAL BUILDING IN KUWAIT

ENERGY EFFICIENCY MEASURES IN EDGE FOR HOMES

• The sun is the most powerful light source but is also a

source of significant heat gain

• It is important to balance lighting and ventilation

benefits of glazing against the impacts of heat gain on

cooling needs and/or passive heating

• The design goal should be to meet minimum

illumination levels without significantly exceeding the

solar heat gains in temperate and warm climates

WINDOW to WALL RATIO (WWR)

JAHRA RED FORT

ENERGY SAVINGS WHEN WWR MEASUERE IMPLEMENTED IN ONE RESIDENTAL BUILDING IN KUWAIT

WWR (%) = WINDOW or GLAZING AREA (including mullions and frames)GROSS EXTERIOR WALL AREA

External shading devices are provided on the building façade to

protect the glazed elements (glass windows and doors ) from

direct solar radiation to reduce glare and to reduce radiant solar

heat gain in cooling dominated climates.

• The shading factor is expressed as a decimal value between 0 and 1• The higher the shading factor, the greater is the shading capability of the shading device

Annual Average Shading Factor (AASF)

ENERGY SAVINGS WHEN DIFFERENT SHADING MEASURES ARE IMPLEMENTED ON THE RESIDENTAL BUILDING IN KUWAIT