A study for the Thermal Efficiency by using of a Small Kitchen Range at the Water Heating

摘要

The investigation of the improvement of thermal efficiency when a small kitchen range was used for water heating was attempted under the various conditions of vessel configurations, surface area of vessels, the amount of water to be heated, the amount of gas for the range and the cover surrounding the vessels. The results indicated that when a constant amount of water was heated, a vessel of large surface and wide bottom area increased thermal efficiency. In the same vessel, the thermal efficiency increased with an increased quantity of water and a decreased amount of gas. Moreover, when the surround of the vessel was covered by a cylindrical pipe, a 5％ increase in thermal efficiency was obtained.