Abstract
The development of hot spring heat source incubator for duck eggs was deemed necessary to design the utilization of hot spring as heat source for incubating duck eggs, to reduce the use of electricity. This study addressed issues such as replacing conventional source of energy with geothermal energy in Los BaAˆos, Laguna, Philippines for incubation of eggs (ducklings, ballot and penoy). The experimental design used was two factors at three levels (2 × 3): ventilation opening (30, 45 and 60°) and number of evaporating pans (3, 4 and 5 pans) and each run had duration of 23 h. Sampling of the average temperature and relative humidity showed an average of 100 samples per hour. The data were analyzed using surface response regression to select the run within optimal conditions. The surface response and multiple regression revealed that the optimal setup was with the ventilation opened at 30° and 5 evaporating pans in the incubator. The optimal conditions were the mean temperature and relative humidity of 37.5°C at the top tray and 49.6% at the bottom tray as predicted by the mathematical model using trial version of Design of Experiment (DoE) 10.0. Key words: Hot spring, incubator, heat source, geothermal, energy, duck eggs.
Highlights
Los Baños is a city located in the province of Laguna, Republic of the Philippines
In Los Baños, geothermal energy is in the form of hot spring and these hot springs are mainly utilized for hot spring resorts
The surface response of the temperature within the incubator was with the combinations ventilation opening (30°, 45° and 60°) and evaporating pans (3, 4 and 5 pans)
Summary
Los Baños is a city located in the province of Laguna, Republic of the Philippines. Los Baños is the location of the Miyon Volcano which is a source of geothermal energy. Geothermal energy is the heat contained in the solid earth and in its internal fluids. It can be stored as sensible or latent heat (Clauser, 1988). In 2014, there were 42 hot spring resorts registered in Los Banos. Because of the hot spring resorts, Los Banos is recognized as a tourist destination. The hot springs are mostly located in the barangays (villages) of Lalakay, Tadlac, Bambang and Baybayin. These hot spring resorts are estimated to consume large volume of groundwater which could result in over-extraction and decrease in ground water quantity. In Laguna Provience, large scale duck egg production is observed in the municipalities of Los Baños and Victoria
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