12.01.2013 Views

Pearl Building Rating System - Estidama

Pearl Building Rating System - Estidama

Pearl Building Rating System - Estidama

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Calculations and<br />

Methodology<br />

Install and connect an air quality alert system to the BMS. The ventilation provided must<br />

provide sufficient dilution at all times, in particular during peak operating hours when<br />

queuing and congestion may occur.<br />

Set trigger values for each of these pollutants, taking into account response times so<br />

ventilation rates will adjust and these maximum values are not exceeded. The levels in<br />

all instances must comply with WHO Guidelines 2000 Air Quality Guidelines for Europe<br />

2nd Edition in relation to carbon monoxide and nitrogen dioxide and particulate matter<br />

PM10 from ASHRAE 62.1.2007.<br />

Demonstrate that the monitoring locations selected are considered worst-case within<br />

the car park area. For example, monitoring must not take place immediately adjacent to<br />

air distribution vents, where pollutant levels would be lower as a result of dilution.<br />

The number of monitoring points will depend on the size of the car park. No part of the<br />

car park must be more than 25 meters from a sampling point. Each area that is serviced<br />

by a separate ventilation system will require a separate monitoring point and at least<br />

one monitoring point will be required on each level. In addition, at least one sampling<br />

point must be provided at each of the entrances and exits of the car park.<br />

Monitoring must take place within the breathing zone. This is the region within an<br />

occupied space between 1 and 1.8m above the floor and more than 0.1 m from walls or<br />

air conditioning equipment.<br />

Outdoor air intakes must be placed away from known sources of pollution such as busy<br />

roads or boiler exhausts.<br />

The system presented in this credit must be consistent with the system included in the<br />

energy model (e.g. variable speed drive fans).<br />

75% enclosure is defined as a car park with a roof and 75% of the wall area perimeter<br />

enclosed.<br />

References � ANSI/ASHRAE 62.1:2007 Ventilation and Acceptable Indoor Air Quality<br />

www.ashrae.org<br />

� World Health Organization Guidelines 2000 Air Quality Guidelines for Europe 2nd<br />

Edition. www.who.int<br />

<strong>Pearl</strong> <strong>Building</strong> <strong>Rating</strong> <strong>System</strong>: Design & Construction, Version 1.0, April 2010 96 of 223

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!