Computer Aided temperature controller for a brooder

Abstract

Temperature control in a brooder has been done mostly using a thermostat as the main controlling element. The use of the thermostat has been witnessed in industries where temperatures are very high. This has been done with the use of micro-controller.These systems are complex and require expertise to man.This thesis describes the design, test and development procedures of a Computer Aided Temperature for a brooder. The sensor was designed using temperature controller IC RS3911 and discrete components. The application software development was done using C language. C has facilities for writing well-structured performed when necessary.programs for all low- level operation to be The development of the controller involved two phases:the sensor design and application software design. Each part of the system was developed and tested separately to ascertain that it was working well before connecting the entire circuit together. This controller was expected to control the temperature of a brooder. Initially, the temperature of the brooder is expected to remain constant at 35°C for one week and subsequently decreased by 3°C every week till temperature controller was hooked to the computer and its performance week and it was found to be working quite well.of 23°C is attained.was monitored The for one. Premature failure of timbers in service due to deterioration of wood wastage in Kenya.Increasing the durability treatments will contribute to better wood utilization by termites is a major cause of timber by effective preservative and conserve timber that could have gone into replacing failed structures due to deterioration.Effectiveness of copper chrome arsenate (CCA), creosote and penta chlorophenol wood preservatives ill Eucalyptus saligna, Pinus patula and against subterranean termite attack was studied. were treated with the preservatives subterranean Clear sapwood Cupressus lusitanica from the three species,to low and high loadings termite attack at Cheptebo in Kerio valley,(PCP)and then exposed Kenya,using to underground block and penciI test methods.The untreated samples sixth they month preservatives were severely had been were significantly attacked completely right from the first month degraded. At(p = 0.05) less effective Jow the three on E. saligna compared to P. patula and C. lusitanica (with an average weight loss of 72.03%,respectively). Creosote PCP low loading respectively).low loading(with an average Unlike creosote was significantly weight loss and by the loading,58.43% more effective of 9.86%,and PCP, CCA high loading and samples98.16%suffered from continuous browsing by termites, samples. treated P. patula and C. lusitanica were more resistant degradation Hence creosote effective.OdontoterniesFour termite species were responsible vulgaris,Coptotermes species.which was only restricted than CCA and85.44% treated and 62.98%Aticistrotennes species,to the surfaces for degradation Macrotermes of the wood:captotermes species