Design Improvement on Metallic Improve Cooking Stove KU-3 Model by blending WAPIC system at Kathmandu University

In the year 2007, Kathmandu University Department of Mechanical Engineering in joint collaboration with Alternative Energy Sector Assistance Program/ Energy Sector Assistance Program(AEPC/ESAP) Signed the Memorandum Of Understanding for selecting appropriate model of metallic stove to be disseminated under subsidy program of Government of Nepal for the people of high hill region who lives in 2000 meter high altitude from the sea level and 1500 meter high altitude whose house is facing due north. After extensive test and verification, KU-3 model was decided as most appropriate model to be disseminated and thus till date more that 6000+ KU-3 model have been already installed under subsidy program. The study address overall efficiency enhancement of KU-3 Model by blending WAPIC system in chimney part and provides additional facilities of pure pasteurized drinking water including Cooking and Room heating with smokeless indoor air pollution. A locally available hollow aluminum pipe with internal diameter 8 mm and length 6.5 m was coiled into a spiral ovular helix of 9±1 cm in diameter. The coil is placed inside chimney of MICS which supplies pasteurized drinking water. Metallic body is design for room heating and three pot hole is for cooking purpose. The thermal efficiency of the KU-3 model with WAPIC system range from 16 -23 % in cold start, 21-25% in hot start and 7-9 % in simmering with 100% removal of EColi form water treated through WAPIC system.