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CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
1
ASHRAE Sri Lankan
Chapter 171
BOARD OF GOVERNERS
President
Kapila Rodrigo
Immediate Past President
Wimala Goonaratne
President Elect
Piyasiri Kalubowila
Vice President
Hulet Jayaweera
Secretary
Prashantha Hewapathirana
Treasurer
Sandamali Perera
BOG Member
Niranjan Caldera
BOG Member
Dilruk Perera
BOG Member
Anthoney Hemakumara
Editor Piyasiri Kalubowila
Office
ASHRAE Sri Lankan
Chapter
101 A Dharmapala
Mawatha,
Colombo 07
Telephone
+94 11-2 888 333
Fax
+94 11-2 888 222
E mail
Web
www.ashraesl.org
Highlights
Impact of Solar Radiation on Cooling Loads & methods of achieving sustainable
solutions ( Page 2 – 4 )
CSR Project by Special Event Committee , MP International Centralized Training,
New Members & Join ASHRAE (Page – 5 )
Celebration of the International Ozone Day, Annual Get Together 2015 & YEA
Scholarship for HVAC Design Essentials Training (Page – 6 )
Photo Gallery , Meetings & Smart Start Program (Page – 7 )
National Competency Standard & Awards (Page – 8 )
RAL Chapters Regional Conference 2015 ISTANBUL
Every year, ASHRAE Chapters from the ‘Region at Large’ come together at the Chapters
Regional Conferences. Annually CRC is hosted by a different Chapter in its country under
a specific theme.
Together, the Chapters and Sections of India, Pakistan, Sri Lanka, Saudi Arabia, Bahrain,
United Arab Emirates, Qatar, Kuwait, Lebanon, Egypt, Nigeria, Greece, Romania, Serbia,
Poland, Slovenia, Hungary, Croatia, Macedonia, Portugal, Spain, Luxembourg, Belgium,
Holland, South Cyprus and Turkey make up the ‘Region at Large’.
This year RAL – CRC was held in Istanbul, Turkey from 1st Oct to 3
rd Oct and Colombo
was nominated as the RAL alternate location for 2016 CRC while Mr. Kalubowila was
nominated as the General Chair.
As a chapter we encourage participation of New/Young members for the local events as
well as regional events as much as possible. This is a place where they can gain
Professional Development Hours (PDH), exposure to the industry key personnel,
professional and scholars outside Sri Lanka, also they gain experience in participation of
well-organized events such as technical sessions, business meetings, training workshops of
various committees and social events.
The Sri Lankan Team (Picture above) participated for the CRC-2015 at Istanbul, Turkey.
From left Danesh Subasinghe (Member) Nuwan Rodrigo (CTTC), Wimala Goonaratne
(GGAC), Kapila Rodrigo (Delegate), Anthony Hemakumara (Alternate), Varuna
Viduranga (Member), Randika Amarasuriya (SA & YEA), Ruwan Kurera (RP)
CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
2
ASHRAE Sri Lankan
Chapter 171
CHAPTER
COMMITTEES -
2015/2016
MEMBERSHIP PROMOTION
CHAIR - DAYANI
GUNAWARDANA
ANTHONY HEMAKUMARA
MEHALA GNANAREDNAM
LAL WEERASINGHE
NAUSHAD MOHAMED
STUDENT ACTIVITIES
CHAIR - RANDIKA
AMARASURIYA
RUWAN KURERA
LAL WEERASINGHE
NAUSHAD MOHAMED
TUSHAN RATNAYAKE
RESEARCH PROMOTION
CHAIR - RUWAN KURERA
DAYANI GUNAWARDANA
SIVAKUMARAN ANJULA
LAL WEERASINGHE
CHAPTER TECHNOLOGY
TRANSFER
CHAIR - NUWAN RODRIGO
WIMALA GOONARATNE
DAYANI GUNAWARDANA
RANDIKA AMARASURIYA
EKANAYAKA BANDARA
NAUSHAD MOHAMED
GRASSROOTS
GOVERNMENT ACTIVITIES
CHAIR - WIMALA
GOONARATNE
MAHENDRA
SENEVIRATHNE
PIYASIRI KALUBOWILA
CHANDANA DALUGODA
PANDUKABHAYA
AMARASINGHE
ISANKA EHELEPOLA
HISTORICAL - HISTORIAN
CHAIR - PANDUKABHAYA
AMARASINGHE
UDAA SANDAMALI PERERA
RUWAN KURERA
Impact of Solar Radiation on Cooling Loads
& methods of achieving sustainable solutions By Eng. Chandana Dalugoda CEng MIE, MCIBSE,
MASHRAE, GCGI, MConsE (SL)
Majority of heat comes from the sun and the position of the building on earth’s surface
defers the magnitude of solar gain throughout the year. Solar energy penetrates through
building fabric, especially window glasses than through the walls. However there is fair
amount of heat conduction due to temperature deference, take place in glasses than walls,
because of the overall heat transmission coefficient or U- factor of the windows are higher
than the walls, say 5.8 W/m2K for window glass and 2.38 W/m2K for cement block wall.
Sri Lanka is situated within the two latitudes, Tropic of Cancer and Tropic of
Capricorn. Earth’s surface between these two latitudes gets Sun rays throughout the year
and all countries falls within known as tropical countries. Hence majority of heat comes
from the sun where we need to reduce heat transfer through the building fabric, especially
through windows to achieve sustainable energy efficient buildings.
Sri Lanka falls on climate zone-1, definition; very humid and hot, 9000 < CDD. In order
to achieve energy efficiency by 30%, ASHRAE Standard 90.1 should be complied.
Minimum building envelope U-values for non-residential applications in climate zone-
1 would be; Roof (attic) 0.192 W/m2K, Walls 3.293 W/m2K, floors 1.825 W/m2K,
opaque doors 3.975 W/m2K & Windows 6.93 W/m2K with SHGC 0.25.
Applying improved quality fenestration material would bring about high energy savings
for building owners and users. 6.0 mm plane glass with aluminium frame and no internal
shading would have an overall U value of 5.88 W/m2K with a 0.88 shading coefficient.
Whereas same combination with internal shading with open weave light colour draperies,
U value would be 5.08 W/m2K and SC 0.625. This is the lowest possible U- value can
achieve for 6.0 mm plane glass. Applying different tint materials orlow-e coating could
only reduce the SC and not the overall U-value.
CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
3
ASHRAE Sri Lankan
Chapter 171
CHAPTER
COMMITTEES -
2015/2016
CHAPTER
SUSTAINABILITY
COMMITTEE
CHAIR - CHANDANA
DALUGODA
HUGH DE SARAM
PIYASIRI KALUBOWILA
ELECTRONIC
COMMUNICATIONS –
WEBMASTER
CHAIR - UDAA SANDAMALI
PERERA
NUWAN RODRIGO
RANDIKA AMARASURIYA
REFRIGERATION
COMMITTEE
CHAIR - EKANAYAKA BANDARA
NIRANJAN CALDERA
WIMALA GOONARATNE
MAHENDRA
SENEVIRATHNE
PUBLICITY COMMITTEE
CHAIR - MAHENDRA
SENEVIRATHNE
PANDUKABHAYA
AMARASINGHE
DAYANI GUNAWARDANA
ATTENDANCE
COMMITTEE
CHAIR - MOHAMED
NAUSHAD
HIULET JAYAWEERA
LAL WEERASINGHE
FINANCE COMMITTEE
CHAIR - UDAA SANDAMALI
PERERA
DILRUK PERERA
WIMALA GOONARATNE
HIULET JAYAWEERA
PUBLICATIONS - E
NEWSLETTER
CHAIR - PIYASIRI
KALUBOWILA
HUGH DE SARAM
NIRANJAN CALDERA
In order to achieve a lower U value, it is necessary to have double pane fixtures. If we
consider 6.0 mm double pane with 6.0 mm air gap, overall U-value would be reduced to
4.4 W/m2K with SC of 0.78. If we apply low-e coated glass for one of the panes then the
overall U-value would drops to 3.9 W/m2K with SC of 0.74.
If put these values for the load calculations and the solar loads for west exposure 6.0 mm
thick glass would be as follows
Fenestration Type Solar (W) Trans (W) U (W/m2K) SC
6mm single pane glass 5220 1112 6.88 0.88
6mm double pane glass 4639 706 4.37 0.78
6mm double pane low-e glass 4166 630 3.89 0.745
Solar reduction using double pane low-e would be 20%, whereas transmission reduction
is high as 43%. Hence type of material and number of panes would not reduce the solar
gain as much as reduction achieved by transmission gain.
Instead, if we use an overhang to the window, following improvements to reduction in
heat transfer can be achieved. Same type of glass with 750 mm overhang to the window,
100 mm reveal depth, height above window 100 mm, extension on both sides 200 mm.
Fenestration Type Solar (W) Trans (W) U (W/m2K) SC
6mm single pane glass 3871 1112 6.88 0.88
6mm double pane glass 3440 706 4.37 0.78
6mm double pane low-e glass 3277 630 3.89 0.745
This example with window overhang projection clearly reduced the solar loads. With
normal single pane glass, reduction of solar load with overhang is 25%. Using low-e
glasses with overhang, solar load reduction would be 37%.
Studies indicates further reduction of solar loads are possible with vertical fin attached to
the overhang. Buildings that comprises of fenestration on west exposure at sea level
altitudes, usually gets horizontal sun rays during evening hours. Vertical fins could play a
major part in preventing solar gain in such circumstances.
Continued….
CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
4
ASHRAE Sri Lankan
Chapter 171
CHAPTER
COMMITTEES -
2015/2016
HONORS AND AWARDS
CHAIR - LAL
WEERASINGHE
HIULET JAYAWEERA
WIMALA GOONARATNE
PIYASIRI KALUBOWILA
RECEPTION COMMITTEE
CHAIR - ANTHONY
HEMAKUMARA
UDAA SANDAMALI PERERA
B.A.L.M. WIJERATHNE
YEA COMMITTEE
CHAIR - RANDIKA
AMARASURIYA
ISANKA EHELEPOLA
NUWAN RODRIGO
TUSHAN RATNAYAKE
SPECIAL EVENTS
COMMITTEE
CHAIR - PANDUKABHAYA
AMARASINGHE
UDAA SANDAMALI PERERA
WIMALA GOONARATNE
ANTHONY HEMAKUMARA
CRC COMMITTEE
CHAIR - KAPILA RODRIGO
WIMALA GOONARATNE
PIYASIRI KALUBOWILA
HIULET JAYAWEERA
PRASHANTHA
HEWAPATHIRANA
AUDITING COMMITTEE
CHAIR – ARAVINDA
AMARASINGHE
E M S L DE SARAM
NOMINATING
COMMITTEE
CHAIR –
WIMALACHANDRA
JAYAKODY
PIYASIRI KALUBOWILA
NAUSHAD MOHAMED
M G THUSITHA
SAMARANAYAKA
ISANKA EHELEPOLA
Therefore we should avoid using plane glass for perimeter windows that gets solar
radiation. Always use improved quality glasses such as low-e or double pane low-e which
reduces heat transmission and solar gains if we combine with properly sized window
overhang.
WINDOW DESIGN GUIDE LINES
Visual Light Transmission (VLT)
The amount of light transmitted in the visible range affects the view through the window,
glare, and daylight harvesting.
For the effective utilization of daylight, the highest VLTs (0.50 - 0.70) should be used in
the glazing located between 6 ft above the floor up to the ceiling.
The view windows below 2.0 m do not require such high VLTs, so values between 0.35
and 0.50 are acceptable to achieve recommended SHGC values.
Light to Solar Ratio
The use of high-performance and selective low-e glazing reduces the visual light
transmission (VLT) proportionately less than do reflective coatings or tints.
Dividing the VLT by the solar heat gain coefficient (SHGC) is a good rating of the
performance of the glass. If the result is less than 1.0, then the glass is a poor choice for
visual quality and daylighting. If the result is higher than 1.55, it is a high-performance
option.
Preferred Window-Wall Ratios
For view and a positive connection to the out-of-doors, people prefer a minimum 20% to
30% ratio of window area to wall area. Glazing the wall areas below desk height (0-30 in.
above the floor) offers little or no benefits for daylighting an office.
CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
5
Join ASHRAE
ASHRAE advances the arts and sciences of heating, ventilation, air conditioning and
refrigeration to serve humanity and promote a sustainable world. With more than 53,000
members from over 132 nations, ASHRAE is a diverse organization representing building
system design and industrial processes professionals around the world.
If you want to connect with like-minded people across the globe who are as passionate as
you are about shaping the future, you should join ASHRAE. When you join ASHRAE, you
are making an investment in yourself. When you become active in the Society by giving
your time and sharing your knowledge, you get even more out of that investment.
For more details contact Membership Promotion Chair Ms. Dayani Gunawardhana on
0773535025.
Membership Promotion
International Centralized
Training held on August
22nd
2015
Our Membership
Promotion Chair Mrs.
Dayani Gunawardana
attended the International
Centralized Training in
Manila, Philippines.
NEW MEMBERS:
Wasantha Jayarathna
Membership No: 8258540
Member Grade: Member
Tyronne Nicholus Silva
Membership No: 8275707
Member Grade: Member
Mahinda Perera
Membership No: 8278222
Member Grade: Member
Kalum Gunasekara
Membership No: 8279338
Member Grade: Member
CSR Project by Special Event Committee
We were able to successfully complete an Eye Screening Camp as a CSR project for more
than 400 patients. The next stage will be providing lenses for needy people and we look
forward for everyone’s contribution to this worthy cause. Please contact Mr. Hemekumar
on 07777382640 for your contributions.
CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
6
YEA Scholarship for HVAC Design Essentials
Training
Presented by the
ASHRAE Learning
Institute, the HVAC
Design Essentials
Training allows attendees
to gain the fundamentals
and technical aspects to
design, install and
maintain HVAC systems.
To encourage attendance
by young professional
ASHRAE members, the
YEA Institute offers one
full scholarship for
attendance to the HVAC
Design: Level I –
Essentials training. The
full cost of registration to
Level I of this workshop
will be covered by
ASHRAE.
Criteria: All applicants
must be ASHRAE
members and 35 years of
age or younger as of July
1, 2015 (student members
are not eligible).
Applicants will be
reviewed based on
contribution to the
industry, ASHRAE
involvement and career
goals. More details can be
obtained from the YEA
Chair Mr. Randika
Amarasuriya, 0772017892.
Celebration of the International Ozone Day
Officials of ASHRAE Sri Lankan Chapter attended the celebration of International Ozone
Day - 2015 marking the 20th Anniversary of Vienna Convention at the German Technical
Training Institute, Moratuwa under the patronage of His Excellency Maithripala Sirisena,
the President of the Democratic Socialist Republic of Sri Lanka. Hon. Ministers,
Government and Non-Governmental Officials, Officers and Importers in AC/Ref Sector,
Teachers, Students and many other were participated at this celebration.
Annual Get Together 2015
Annual Get Together of the members with their spouses and family members is a feature
that brings all in the trade comprising of academics, professional practitioners, suppliers,
contractors and the young students together to share their experience and knowledge in a
friendly and cordial environment by their physical presence.
This annual event has remarkably helped us to bring together the HVAC&R industry to a
centre point with an advancing membership as well as promotion of the products and
services of the sponsors, appreciating outstanding personnel in the trade with the grace of
the leading engineering firms in Sri Lanka.
This year the Annual Get Together will be held on Saturday 12th December 2015 at the
Grand Monarch, Talawathugoda at 18.30 hrs.
Your generous contributions in the past have taken this Association forward to what it is
today and we look forward to your continued support this year as well.
CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
7
MEETINGS
ASHRAE Marketing
Training
Leadership training
program
ASHRAE's SmartStart
Program
It's the best way for
ASHRAE student members
to receive the many benefits
of Associate grade
membership after finishing
college. SmartStart is a 3-
year program that allows
Student members to transfer
to Associate grade
membership at a rate that is
recent-graduate
friendly. *Please note that
the SmartStart program is
only for current ASHRAE
Student members.
More details can be obtained
from the STUDENT
ACTIVITIES Chair Mr.
Randika Amarasuriya,
0772017892.
Photo Gallery
RAL Chapters Regional Conference 2015 ISTANBUL
Non Chemical Water Treatment Solution Technical Seminar
CHAPTER NEWS
Newsletter 2, 2015/2016 by ASHRAE Sri Lankan Chapter and not by the Society
8
PAST PRESIDENTS
2002-2003
Mr. Y. Marikkar
2003-2004
Mr. M. Nanayakkara
2004-2005
Mr.C.Dalugoda
2005-2006
Mr.P.Amarasinghe
2006-2007
Mr.K.W.G. Hewage
2007-2008
Mr.W.Jayakody
2008-2009
Mr.P.Kalubowila
2009-2010
Mr.J.H.C. De Saram
2010-2011
Mr. M. Nanayakkara
2011-2012
Mr.C.Dalugoda
2012-2013
Mr.W.Jayakody
2013-2014
Mr.P.Amarasinghe
2014-2015
Mr.W. Goonaratne
National Competency Standard
ASHRAE Participation on National competency Standard preparation workshop by the
ministry of skills Development and youth affairs and presented to H E the President at the
National Ozone Day on 16-Sept 2015. Three members participated for this workshop from
the Ashrae Sri Lankan Chapter as follows. Mahendra Seneviratne – Consultant NOU.
Naushad Kalideen – Chair Publicity. Wimala Goonaratne – Chair GGAC.
AWARDS
GOLD RIBBON AWARD – Mr.Ruwan Kurera
PRESIDENTIAL AWARD OF EXCELLENCE – Mr.Wimala Goonaratne
RESEARCH PROMOTION (RP) FULL CIRCLE AWARD
RECOGNITION FOR EXCEEDING RP GOAL – Mrs. Dayani Gunawardane
REGIONAL AWARD OF MERIT – (1)Mr.Pandukabhaya Amarasinghe
(2) Mr.Chandana Dalugoda (3) Mr. Wimalachandra Jayakody
CHAPTER SERVICE AWARD – (1)Mr.M.Nanayakkara (2) Mr.Piyasiri Kalubowila
(3) Mr.Wimala Goonaratne (4) Mr.Dushantha Wijesekara (5)Mr.Kapila Rodrigo
(6) Mr.Chandana Dalugoda (7) Mr.Hiulet Jayaweera
