Make use of the gas oil and the middle of night electricity for the boiler

摘要

The present invention inserts a plurality of heaters into a heating tank of an existing boiler using oil or gas, or connects an auxiliary heating tank with a built-in heater connected to the existing boiler in series so that oil and gas are the main heat sources. By operating the boiler by using low-cost late night power, it is possible to reduce the maintenance cost by operating the boiler, to suppress the consumption of oil and gas, and to reduce the power consumption when the boiler suddenly stops. This solution solves the problem of stopping the boiler by stopping the supply of gas or oil as well as enabling it to operate, as well as a combined boiler using gas, oil, and late-night power to replenish the required heat for a short time in case of caloric shortage during daytime use. It is about.