cutting through the confusion: leed vs. well vs. reset, how to … · 2019-08-12 · 2019 iaqa...

2019 IAQA Annual Meeting

Dongliang Shi, LEED AP BD+C, WELL AP, RESET AP

PureLiving Indoor Environmental Solutions Co., Ltd.

[email protected]

Office Number (+86 21 34692269)

Cell Number (+86 13771888234)

Cutting through the confusion:

LEED vs. WELL vs. RESET,

How to achieve IAQ requirements in

emerging green building certifications


01 IAQ & Green Building Certifications


Importance of Good IAQ

“People are the most valuable asset of organizations,

and efforts to improve Indoor Air Quality can improve

health, well-being, productivity, and profitability.”

-- World Green Building Council[1]

[1]. World Green Building Council, Health, Wellbeing & Productivity in Offices, the Next Chapter for Green Building, 2014. Available: http://www.worldgbc.org/activities/health-wellbeing-productivity-offices/

http://www.worldgbc.org/activities/health-wellbeing-productivity-offices/








Typical Building Operating cost[1]:

Importance of Good IAQ

[1]. World Green Building Council, Health, Wellbeing & Productivity in Offices, the Next Chapter for Green Building, 2014. Available: http://www.worldgbc.org/activities/health-wellbeing-productivity-offices/









IAQ in Green Building Certifications

RESET LEED WELL

7%* On IAQ

(LEED V4 BD+C)

12% On IAQ;

Air is the 1st concept (WELL V2)

100% on IAQ

(RESET V2)

* IAQ related credits as % of total credits


IAQ in Green Building Certifications

- Lab based : more complete parameters (i.e.: 33* VOCs per CDPH)

- Limited window: must finish testing prior to occupier moving-in

- Design-rating to performance measurement: LEED Arc, performance based pilot credit

- Lab + handheld: less parameters but have to be done by their own auditors (WELL Assessors)

- Conduct testing after occupation; can re-test if failure

- Have one separate Feature on dynamic monitoring (≥3 parameters)

- Monitoring-reliant: test for PM2.5, TVOC, & CO2

- Focus on ongoing performance

- Results must be kept within required limits and continually reported for > 3 months to get certified


LEED Arc (Dynamic Plaque)

A building performance monitoring and scoring platform

* 2 parameters tested via handheld (TVOC and CO2); readings once a year comply


Performance Based Pilot Credit

Pilot Credit for LEED V4 O+M: Performance based indoor air assessment in Existing Buildings (possible 9 points)

Tier Requirement Points

Tier 1: Baseline IAQ evaluation

Walkthrough+ baseline testing+ occupant evaluation 2 points under Indoor air quality management program

Tier 2: IAQ optimization (Monitoring data

accepted)

Improvement over baseline 1 point under Enhanced Indoor air quality strategies

Achieve pass criteria for mandatory testing (meet contaminant limits + 80% occupant satisfaction)

1 point under Green cleaning products and materials

Optional contaminant testing: Perform testing 1 point in Innovation credit

Optional contaminant testing: Achieve pass criteria

1 point under Enhanced Indoor air quality strategies

Tier 3: Ongoing IAQ performance

Implement annual air testing and indoor air quality evaluation

3 points in Innovation credit


RESET

Integration of RESET’s IAQ data collection and assessment framework into the operability of WELL[2]

[2]. WELL and RESET to Align Building Standards. Available: https://reset.build/blogs/4

https://reset.build/blogs/4


02 What’s the Trend?


What’s the Trend?

In terms of IAQ:

With the availability of reasonably priced IoT sensing

equipment and the hardware that sits behind, the industry is

seeing a move away from design checkbox type certification to

dynamic performance-based measurements


What’s the Trend?

Design Performance

Ma

nd

ato

ry

62.1, 55, 90.1

A Guide on Indoor Air Quality Certification

Scheme for Offices and Public Places

GB/T 18883-2002

Vo

lun

tary


03 How to Achieve?


IAQ Management

Strategies

How to Achieve – IAQ Management

Emission Source Control

Ventilation & Air Cleaning

Pre-Air Testing or

Monitoring

• choosing low-emission indoor materials

• Reducing indoor pollutants, mainly for VOCs

• Evaluate the efficiency • Target the issues


Fine Particle Matter – BIG Matter

After IAQ management strategies being successfully

carried out, chemical pollutions (VOCs) are more

controllable than particulate matters, since outdoor fine

particulates (PM2.5) is continually a big source.

According to our experience in Asia:


[3]. US EPA Outdoor Air Quality Data; available: https://www.epa.gov/outdoor-air-quality-data/download-daily-data


https://www.epa.gov/outdoor-air-quality-data/download-daily-data













[4]. US Consulate in Shanghai, Outdoor Air Quality Monitor; available: https://china.usembassy-china.org.cn/embassy-consulates/shanghai/air-quality-monitor-stateair/


https://china.usembassy-china.org.cn/embassy-consulates/shanghai/air-quality-monitor-stateair/













[5]. US consulate in New Delhi, Air Quality Data; available: https://in.usembassy.gov/embassy-consulates/new-delhi/air-quality-data/


https://in.usembassy.gov/embassy-consulates/new-delhi/air-quality-data/












“Air Apocalypse”


How to Achieve?

Building HVAC filtration is essential and is the usual way;

However, is building HVAC only enough?

15

μg/m3

请在此输入您的标题

LEED v4 RESET v2

Acceptable:

15 μg/m3

Enhanced

rating: 10/12

μg/m3

WELL v2

Acceptable:

35 μg/m3

High

Performance:

12 μg/m3


How to Achieve?

1: Central HVAC Filtration

PAU Office Fresh air

Infiltration

NO recirculation loop,

only single pass

filtration in PAU

Office air temp determines

FCU coil flow rate. Limited

Options for FCU filtration

(Coarse filter in return)

FCU FCU

Outdoor pollution levels

vary, but peak in winter.


How to Achieve?


PAU AHU Office Fresh air

Infiltration

Air going through the

Recirculation loop is

Smallest in winter and

Filtration potential is

lowest

Office air temp determines

air delivery volume

Outdoor pollution levels

vary, but peak in winter


How to Achieve?

0

20

40

60

80

100

120

PM

2.5

u

g/m

3

High Pollution Week In January 2018

Outdoor PM2.5 Indoor PM2.5 (no recirculation) Indoor PM2.5 (recirculation)

LEED/WELL Basic Standard

40 - 60% reduction (no recirculation)

– typical fan coil system (PAU with MERV 13)

75 - 85% reduction (recirculation)

– typical VAV system (PAU+AHU with MERV 13)



How to Achieve？

2: Upgrading filter

• MERV 13MERV 15 or HEPA grade

increase in pressure drop and associated

energy consumption

• Media filter ESP or IFD

Increasingly adopted now

Critiques on the reliability remain


• Content

How to Achieve

3: Recirculation filtration

In-ceiling units Portables

Besides from HVAC, what else can be offered to provide further purification?


How to Achieve

Relative Cost for Mechanical System Filtration Options (per 1% PM2.5-reduction over 3 Years per 1,000 sqm)[6]

3.1: why not portable units:

[6]. JLL Whitepaper: Every breath we take – transforming the health of China’s office space; available: https://www.joneslanglasalle.com.cn/china/en-gb/research/221/indoor-air-quality?from=singlemessage&isappinstalled=0

https://www.joneslanglasalle.com.cn/china/en-gb/research/221/indoor-air-quality?from=singlemessage&isappinstalled=0









• Content

How to Achieve

3-2: Real-time monitoring:

1. RESET and WELL requirements

2. Essential for on-demand automation

Monitor for Air Quality: TVOC, CO2, Temperature, Humidity, PM2.5

Placement: Ceiling or Wall

5 inch Diameter

1.8 inch Height


How to Achieve

On-demand automation vs Manual operation in terms of PM2.5 reduction trend[6]

3-3: On-demand Automation (based on monitoring data):

[6]. JLL Whitepaper: Every breath we take – transforming the health of China’s office space; available: https://www.joneslanglasalle.com.cn/china/en-gb/research/221/indoor-air-quality?from=singlemessage&isappinstalled=0










How to Achieve

F iltration Units Control Platform Monitoring Platform

Cloud Servers

IAQ Ambient

Monitor

3. De-centralized recirculation filtration + real-time monitoring + on-demand automation


How to Achieve

3.4: What else should be considered for this combined system

• Noise control

• Adequate consideration about potential risks with MEP

during design/installation

• Friendly use & maintenance for Ops & FM team


Conclusions

With the tightening of air quality standards for certification and the

increased requirement for dynamic real time operational data, A

combination of central HVAC system and additional decentralized

solution with real-time monitoring is the practical and effective pathway.


Bibliography [1]. World Green Building Council, Health, Wellbeing & Productivity in Offices, the Next Chapter for Green Building, 2014. Available: http://www.worldgbc.org/activities/health-wellbeing-productivity-offices/ [2]. WELL and RESET to Align Building Standards. Available: https://reset.build/blogs/4 [3]. US EPA Outdoor Air Quality Data; available: https://www.epa.gov/outdoor-air-quality-data/download-daily-data [4]. US Consulate in Shanghai, Outdoor Air Quality Monitor; available: https://china.usembassy-china.org.cn/embassy-consulates/shanghai/air-quality-monitor-stateair/ [5]. US consulate in New Delhi, Air Quality Data; available: https://in.usembassy.gov/embassy-consulates/new-delhi/air-quality-data/ [6]. JLL Whitepaper: Every breath we take – transforming the health of China’s office space; available: https://www.joneslanglasalle.com.cn/china/en-gb/research/221/indoor-air-quality?from=singlemessage&isappinstalled=0























































Questions?

Dongliang Shi

[email protected]

cutting through the confusion: leed vs. well vs. reset, how to … · 2019-08-12 · 2019 iaqa...

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