Hong Kong outperformed Shanghai and Beijing in green building performance

Hong Kong was the highest ranked Chinese city for green building beating out Beijing and Shanghai in study by Solidance funded by Singapore Government.

Hong Kong

Hong Kong was ranked 6th, the leading Chinese city, ahead of Beijing and Shanghai, a vindication of Hong Kong’s own independent BEAM green rating rating tool.

BEAM has operating for twenty years, since the first rating tool was issued in 1996, and today, behind the scenes, countless volunteers give up their free time to support Hong Kong community, with little credit and no reward Herbert said.

#greenbuilding #hongkong #BEAMPLUS

John A. Herbert is a recognised green building expert, a BEAM Professional, and chairman of BEAM Technical Review Panel.

How to avoid mould in air conditioned buildings

moisture mould problems air conditioned buildings

In air conditioned buildings, the exterior vapour pressure will be higher than the vapour pressure in the air conditioned room, therefore the vapour and moisture flow is high to low (blue line in the diagram above)

Now normally this is not an issue, because a decent ventilation system will transport moisture back to the air conditioning cooling coil, it is condensed, and safely drained away.

However, problems occur when a vapour retarder is installed (red line in above diagram) interrupting the flow. Moisture becomes trapped, and even the best ventilation system cannot transport it to the cooling coil. Instead what happens, damp, moisture, and then mould growth occurs (left of red line in diagram above).

wall-mould-800w-2

And we already know the problems associated with mould, it causes poor indoor air quality, and health issues for the occupants. If the air conditioning room also happens to be under negative (relatively) pressure, as often occurs in hotel rooms, the situation is compounded because the vapour quantity is increased, accelerating the process.

This phenomenon is not limited to Hong Kong, it occurs in hot tropical climates, whether you are in Singapore, Indonesia, Shanghai, or Hong Kong.

mould hong kong

Furthermore, it’s the type of problem that’s not immediately apparent, mould doesn’t just appear overnight, and it is unlikely to surface within the defects liability period (DLP).

thermal-scan-101

So it is obvious, lining the external wall of an air conditioned space with any vapour retarder must be avoided at all costs. But sadly it still happens today, increasing maintenance and costs for building owners and operators.

About Kelcroft

Kelcroft based in Hong Kong provides specialist advice, including energy, built environment, and green building consulting services, advising owners and design teams, to lower the cost of building operations.

tags

#mould #mold #hongkong #buildings #hotels #maintenance

thermal revelations with infra-red

thermal scan hong kong, china, asia, Kelcroft

thermal scan hong kong, kelcroft

predicting spalling infra-red condition survey

Infra-red scanning tool is the latest high technology tool for surveying the condition of M&E services and buildings. the condition may appear normal to the naked eye, but infra-red imaging reveals subtle details not normally visible to humans and presents a false colour image for easy review.

#energyaudit #building #survey

EMSD Cooling Tower Audit

emsd cooling tower audit, hong kong

In Hong Kong EMSD (www.emsd.gov.hk) requires an independent audit of cooling tower system every year, and still in 2016 it is needed. In the photo above the cooling tower basin is contaminated with dirty, and algae grow has started.

emsd cooling tower audit

Model air conditioning condenser side water schematic  credit: Prevention of Legionnaires’ Disease Code of Practice

The EMSD Code of Practice part 2 is the standard to assess the cooling tower system operation, and the annually conducted audit requires document review of the procedures and a physical inspection of the towers inside and out, then adjudicate compliance.

cooling tower audit hong kong

cooling-tower-hongkong-600w

Cooling Tower FAQ

Q. Who can conduct EMSD cooling tower audit in Hong Kong?
A. Kelcroft conducts independent EMSD cooling tower audit for Government, and private sector organsations.

Q. Is on-site checking of the cooling tower system required?
A. Yes, site inspection of the cooling tower system and operating records is required.

Q. What cooling tower system records will be checked?
A. The cooling tower operation check include the records for maintenance, water treatment, and laboratory results shall be reviewed.

Q. When is EMSD Cooling tower audit required?
A. Annually and after any major renovation work is recommended.

Q. What standard is used for the cooling tower audit?
A. The cooling tower audit standard is the latest version of EMSD Code of Practice for Water Cooled Air Conditioning Systems Part 2: Operation and Maintenance of Cooling Towers [link]

CLICK HERE for information about Kelcroft’s EMSD cooling tower inspection

BEAM PLUS Existing Building (EB) Launch 24 March 2016

Kelcroft’s director Mr John A. Herbert attended the BEAM PLUS EV V2 launch at the Zero Carbon Building on 24 March 2016.
BEAM PLUS EB launch, John A. Herbert
Sec for Environment Mr K.S. Wong was one of the officiating guests. The latest version of BEAM EB has two alternative paths for compliance, either the Applicant can submit an application for the whole building (comprehensive) or by different stages (selective) the latter designed to provide more flexibility for building owners.

BEAM PLUS EB v2

About Kelcroft

Kelcroft is a built environment consultant based in Hong Kong providing expertise in the green building and energy sectors.

Light Pollution

Kelcroft’s director John A. Herbert was a guest on the RTHK Radio 3 backchat programme on 5 April 2016 the topic under debate was light pollution.

John A. Herbert

John A. Herbert Photo credit: RTHK

The BEAM PLUS green building rating tool, includes SA15 Light Pollution, its criteria is designed to encourage developers to plan and arrange the works to avoid light pollution. One simple measure to minimise light pollution would be preventing installation of lighting fittings aimed skywards Herbert said

 

Building Science Mould (mold)

by John A. Herbert

mold mould Hong Kong

We spend many hours inside buildings every day, whether its your office, home, or place of entertainment (cinemas, shopping centres, etc.) therefore the quality of the air we breathe everyday should be a very important issue, yet our buildings often let us down, mould (or mold) being a common issue. The key to avoiding mould (mold) is minimising moisture, and one of the key measures to manage moisture is good ventilation.

mold mould Hong Kong

But ventilation alone does not tell the whole story because understanding the science, some might argue that is a lost art, is required to find identify source, and rectify problems.

Surface mould can be easily be seen, and washed down. But mould, hidden inside walls, and floors is far more difficult to detect, and once detected treated. Mould can cause health problems, allergies, for occupants, and moisture left unattended can even destroy the fabric of your building.

BEEO compliance for new construction

by John A. Herbert

emsd cocr stage 1

How to comply with BEEO ordinance for new construction?

To build in Hong Kong you follow the traditional BD submission format, but you must also fulfil the mandatory requirements detailed in the Building Energy Efficiency Code (BEEO). How does that impact the construction process?

The building owner must engage an EMSD Registered Energy Assessor (REA) to complete and issue EMSD Form EE1, also known as Stage 1 Certificate of Compliance Registration (COCR), and an EMSD Form EE2, known as Stage 2 COCR.

When does the COCR need to be issued?

Stage 1 COCR must be submitted within two months after obtaining BD consent. For Stage 2 COCR, that must be submitted within four months after obtaining BD Occupation permit.

further details are provided on the EMSD website.

hongkong-emsd-energy-code-2015-rev-a

updated EMSD energy code 2015 published

by John. A. Herbert
emsd REA John A. Herbert
EMSD has published the updated Building Energy Code 2015 and Energy Audit Code 2015 (refer to the EMSD website http://www.emsd.gov.hk). Kelcroft provides REA services to comply with code requirements.