| Author | Piyaratne, K. K. A. P. |
| Call Number | AIT Thesis no.ET-99-16 |
| Subject(s) | Commercial buildings--Energy conservation--Sri Lanka
|
| Note | A thesis submitted in partial fulfillment of the requirements
for the degree of Master of Engineering. School of Environment Resources and Development
|
| Publisher | Asian Institute of Technology |
| Abstract | End use Energy of modem commercial buildings is significantly high. Due to lack of energy
efficient envelopes of buildings, a large amount of energy is wasted. The understanding of
thermal interaction in an air-conditioned building have become a necessity in the aspect of
providing comfort as well as for rational use of energy.
The most significant cause of high-energy consumption in air-conditioned building in
tropical countries is heat transfer through the building envelope. Obviously, the better a
building is insulated, the smaller will be tht! heat gain and losses through the structural
elements.
The high ambient temperature and solar radiation are the main driving forces for the heat
transfer through the building envelope in air-conditioned buildings. But such transfer is
modulated by the fabric of the envelope components attributed by their thermal properties.
Both the driving forces for the heat transfer and the building usage are dynamic processes.
It has been proved that the best way to regulate the thermal performances of building
envelope for energy conservation is developing the building energy performance standards
for buildings envelope for particular climatic area. A well-developed computer program;
DOE-2, was utilized as the main research tool. Using the simulation program a model has
been developed to represent the energy performance of the buildings category for the study
of standards development.
The OTTV formulation comprises parameter terms relating to the driving forces, the thermal
properties of the building fabric, and the usage schedule of the building. Monthly parameter
values ofOTTV formulation and the monthly OTTV values are developed and assessed.
Development and assessment of steady-state indicators of cooling requirement for
commercial buildings in Sri Lanka are also worked out. Cooling-degree hour, dry-bulb
temperature and enthalpy of ambient air are all shown to be good indicators, but cooling
degree hour is practically more significant. |
| Year | 1999 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Surapong Chirarattananon; |
| Examination Committee(s) | Dhadbanjan, Thukaram;Pham, H. L.; |
| Scholarship Donor(s) | Government of Sri Lanka ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1999 |