| dc.description.abstract | A heat storage tank is a system designed to store heat energy used for heating and cooking. It was designed by a PhD student Mr. Jimmy Chicaga. It was designed to work on solar energy but during our experimentation we use A.C. The major reason for the development of the heat storage tank was to reduce on the consumption of other forms of energy such as Apparatuses Electricity, Biomass among others due to their related effects to the environment. In Uganda (90percent) of the total energy consumption is generated though biomass which can be separated in firewood (78.6percent), charcoal (5.6per- cent) and crop residues (4.7percent) , Electricity is contributing only (1.4 percent) to the national energy balance while oil products , which are mainly used for vehicles and thermal power plants account for the remaining (9.7percent) High demand for biomass energy has resulted into environmental effects . The heat storage tank is preferred because of its advantages which include, (i) It is environmental friendly (ii) Solar energy used and the components of the heat storage tank for example oil are all environmental friendly. (iii) The heat storage tank system is cheap. Materials used for its construction are cheap and can be used for quite a long period of time without replacement. However, there was also need to examine different aspects on the heat storage tank for example temperature profile, arrangement of thermal couples, insulation, charging and discharging the heat storage tank, time taken to charge the system , time for cooking and also effectiveness of oil and rock pebbles, thus carrying out this project. Currently the sizing of the storage tank to cook one litre of water and energy required with oil and rock pebbles is not known. The main goal of the project was to do experimental tests on heat storage tank. The system was charged for 94 minutes up to a temperature of 870C at the bottom of the tank and 195.90 C at the top of the tank . Power was switched off and discharging started at while cooking. For the first cooking, one litre of water boiled to 94.830C in 8 minutes, For the second cooking one litre of water boiled to 95.00 C in 12 minutes. For third cooking one litre of water boiled to 95.00C in 12 minutes. After 20 minutes the system took 20 minutes to boil one litre of water to 94.00C. After one hour the system took 20 minutes to boil one litre of water to 860C. Therefore the heat storage is efficient enough for fast cooking. We were able to discharge the heat storage system while cooking and one litre of water boiled in in 8 minutes on immediate cooking and the system took 20 minutes to cook one litre of water after one hour. Therefor the heat storage tank system is a good system because of its efficiency since it can cook in the shortest time and also store large amounts of energy for many hours when well insulated. | en_US |
