Energy efficiency of air conditioning systems in commercial buidlings : the case of Thailand | |
| Author | Juntakan Taweekun |
| Call Number | AIT Thesis no.ET-96-11 |
| Subject(s) | Commerical buildings--Energy consumption Commercial buildings--Air conditioning |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Three commercial buildings in Bangkok, (Office and Educational Complex) were audited to study the working of air conditioning systems so as to suggest improvements for efficient energy use. The study was also aimed at determining the availability of energy efficient technologies suitable for these buildings. From the energy audit, it was found that the major load (60%) for three buildings come from the air conditioning system and most of this energy is consumed by the compressors. The performances are within the prescribed values of the Energy Conservation Promotion Act of 1992. Building A is a well designed office with energy efficient technologies and controlled by a computerized Building Automation System (BAS). Velocity coil design in AHUs, VAV system using low-noise axial fans and glazed windows reduce the energy consumption. From the performance of chillers, it is shown that running chillers in the range of cooling load less than 40% (or 168 tons) should be avoided. Building B is an education complex with many equipment at least 20 years old. From the audit, many options are suggested to reduce energy consumption. The options vary from operation and maintenance of equipment to the replacement of inefficient equipment. The payback period and return of investment have been estimated. Building C is a new construction and has many new technologies such as, BAS and , VA V system. From the energy audits, the operation schedule and maintenance of equipment have been suggested for efficient operation. An economic analysis indicates the viability of various options. The study indicates that cool storage system is not an attractive option. Many energy efficient technologies are currently available in the market. They have been identified and their performance and cost data used in the energy conservation options. A list of vendors of energy efficient technologies is also given. This work shows that all the three buildings have chiller performances within the ECP A requirements. However, there is still scope for improvements and many recommendations for the same have been suggested. |
| Year | 1996 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Mohanty, Brahmanand;Kumar, Sivanappan; |
| Examination Committee(s) | Bhattacharya, Sribas C.; |
| Scholarship Donor(s) | Ministry of University Affairs; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1996 |