U-value Thermal transmittance (U value) is the heat transmission in unit time through unit area of a material or construction and the boundary air films, induced by unit temperature difference between the environments on either side.Unit of U value is W/m2.K. U value for the wall/roof/glazing indicates its ability to Read more…
For all climatic zones, vertical fenestration compliance requirements for all three incremental energy efficiency levels, i.e. ECBC, ECBC+, and SuperECBC, shall comply with the following: (a) Maximum allowable Window Wall Ratio (WWR) is 40% (applicable to buildings showing compliance using the Prescriptive Method, including Building Envelope Trade-off Method) (b) Minimum Read more…
SHGC and Shading coefficient are both terms used for fenestration of a building. They are used to describe properties of a glass while determine solar heat gain through a window. Solar Heat Gain Coefficient (SHGC) The Solar Heat Gain Coefficient (SHGC) is the percent of solar energy incident on the Read more…
Introduction The purpose of the Energy Conservation Building Code (Code) is to provide minimum requirements for the energy-efficient design and construction of buildings. The Code also provides two additional sets of incremental requirements for buildings to achieve enhanced levels of energy efficiency that go beyond the minimum requirements. The Code Read more…
Following are the Mandatory Requirements for ECBC Compliance with Reference to HVAC System of Building. Natural ventilation Equipment Efficiency Controls Piping and Ductwork System Balancing Condensers Natural Ventilation » As per National Building Code of India 2005 SOURCE: Bureau of Indian Standards, National Building Code of India 2005, Part 8 Read more…
Bureau of energy efficiency introduced Energy conservation building code (ECBC) in May 2007. This code has become mandatory in many states of India. Ten states have notified ECBC: Rajasthan, Odisha, Uttarakhand, UT of Puducherry, Andhra Pradesh, Punjab, Telangana, Haryana, West Bengal, and Karnataka Also the green building rating system like Read more…
Prescriptive Requirements for Fenestration Location : Gurugram Climate Zone : Composite (Lat: 28° 42’ N; Long: 77° 54’ E) Building Type : Daytime Use Building Roof Area : 409 m2 Roof Insulation : Rigid Board 25 mm with R = 2.1 m2·K/W Wall Area : 930 m2 Wall Insulation : Read more…
The SHGC and U-factor ratings are the most important items to verify during inspections. Building professionals should verify that the ratings of the installed windows, doors, and skylights meet or exceed the ratings specified on the plans. It is also important to verify that the same window area has been Read more…