ERU - 1997: Recent submissions

  • Proceedings of Symposium on Research for Industry 1997 - Pre Text 
    Hettiarachchci, P [Conference-Full-text]
  • Self-aligning antenna 
    Kumara, GTDM; Liyanage, CNH; Welikada, WSP; Dias, D [Conference-Full-text]
    This paper describes an automated antenna rotating system which will find and rotate to the direction of maximum received signal strength for a selected TV channel. The antenna system is implemented using a microprocessor ...
  • Hazardous waste management in Sri Lanka 
    de Alwis, AAP [Conference-Full-text]
    The country is currently looking towards development through industrialization. The industries will inevitably generate hazardous wastes which will need special handling and disposal methods. This important aspect has ...
  • Hydraulic performance of porous vertical coastal Structures 
    Hettiarachchi, SSL [Conference-Full-text]
    Porous vertical structures have been used for coast protection and for harbour structures. In the case of harbours these structures have been used as the principal breakwaters and as internal structures. The ability to ...
  • A 12v dc/230v ac inverter/charger with advanced Protection features 
    Ranaweera, A; Seneviratne, BKCC; Kalyanapala, M [Conference-Full-text]
    The inverter can be used as a source of ac power in the absence of grid power. The battery can also be charged by alternative sources of energy if grid power is not available at all. The unit described works as a batter}' ...
  • A secure database accessible through the worldwide Web 
    de Silva, GC [Conference-Full-text]
    Database access through the World Wide Web can combine the advantages in using each of them It permits people to work away from their offices, and to carry out money transfers over the Internet There have been, however, ...
  • Management of unaccounted -for-water in the greater colombo water supply Distribution system. 
    Ratnayake, N; Chandrasekera, HJVC [Conference-Full-text]
    Water losses in the water distribution system is a common phenomenon experienced by water supply facilities all over the world. Unaccounted-for-Water (UFW) is the difference between the quantity of water produced and the ...
  • Design of high strength concrete mixes 
    Jayanandana, ADC; Jayasinghe, MTR; Hewagama, CI [Conference-Full-text]
    High strength concrete offers many advantages in the construction of high-rise buildings and bridges. In many countries, concrete strengths higher than 40 MPa are widely produced on commercial basis using normal aggregates ...
  • Applications of high strength concrete in highrise buildings 
    Jayasinghe, MTR; Jayanandana, ADC; Alwis, KGNC [Conference-Full-text]
    High strength concrete can be used in high-rise buildings to minimise the size of columns, especially in the lower floors. High strength concrete has the added advantage of a higher elastic modulus that can reduce the ...
  • Wind loads for high-rise buildings constructed in Sri Lanka 
    Jayasinghe, MTR; Jayathilake, SAVSW; Perera, KAAA; Wickramasinghe, P [Conference-Full-text]
    In the design of high-rise buildings, it is of paramount importance to control the wind induced accelerations of the buildings to acceptable limits so that the majority of occupants will not feel the wind induced movements ...
  • Earthquake design techniques for Sri Lanka 
    Jayasinghe, MTR; Kulatilake, SAS; Alwis, KGNC; Angammana, RB; Perera, GDTS [Conference-Full-text]
    Two major factors discourage the introduction of seismic resistant design to low seismic regions like Sri Lanka. They are the cost associated with improved seismic resistance and the misconception that the area concerned ...
  • Passive solar techniques for Sri Lanka 
    Jayasinghe, MTR; Sujeewa, LC; Fernando, KKJS; Wijayapriya, RA [Conference-Full-text]
    Passive solar architecture can be described as the utilisation of the energy of the sun together with the characteristics of the local climate to directly maintain thermally comfortable conditions in buildings while ...
  • Integration of cost control and estimation using Spreadsheets and databases 
    Kodikara, GW [Conference-Full-text]
    Cost control is very important for any industry, since it is the activity which monitors the actual cost against the budgeted costs and initiates corrective actions if the costs are higher than expected. The estimating ...
  • Design and construction of horizontal axis wind mill For water pumping 
    Balasuriya, PD; Nimal, RP; Pathirana, CR; Sugathapala, AGT [Conference-Full-text]
    This paper presents design and construction details of a six-bladed horizontal axis wind mill suitable for small scale lift irrigation. The main outcome of the study is the improvement of the rotor performance by ...
  • Wind resource assessment for designing of Wind farms in Sri Lanka 
    Nanayakkara, DPN; Udawatta, UKDLP; Pulasinghe, KN [Conference-Full-text]
    Wind energy conversion at potential sites would be an alternative solution for the existing energy crisis. In recen: years, there has been growing interest in utilizing wind electric power conversion systems to provide ...
  • The importance of humphreys spiral in heavy mineral Separation 
    Fernando, WLW [Conference-Full-text]
    The Humphreys Spiral Concentrator which was developed in 1943 is now being used extensively for the concentration and the recovery of heavy minerals. In Sri Lanka, this device is very effectively used by the mineral sand ...
  • Targeting and design of heat fiecovery network Considering different heat transfer conditions 
    Rathnasiri, PG [Conference-Full-text]
    To date supertargeting which is the industrial software available for targeting, designing and simulation of heat recovery network has only been able to trade off energy and capital ahead of designing and to give optimum ...
  • Free space optical links 
    Punchihewa, AG [Conference-Full-text]
    This paper describes a future scenario where optical links are used for interlinking data super highways. Conventionally, optical carriers are used in guided form where it travels within an optical fibre. However, in ...
  • Optimisation of energy consumption and productivity Of a garment factory 
    Wickramasinghe, GLD [Conference-Full-text]
    In most Garment factories the energy cost represents a considerable portion of the total production cost. The aim of this project is to build a computer model for a garment factory so as to analyse the various conditions ...
  • Mathematical modelling and extrapolation of Streamflow for hydro-power development 
    Wijesekera, NTS [Conference-Full-text]
    Hydro-power development is important for Sri Lanka not simply because it is a means of energy generation but also because it utilizes a resource which does not create environmental hazards in the process of energy ...