Thermal oil furnace is a new, safe, efficient and energy-saving, low-pressure (under normal pressure or lower pressure) special industrial furnace that can provide high-temperature thermal energy. It is an electric, 0 # 3 diesel and natural gas as fuel, and heat-conducting oil. As a heat carrier, a circulating oil pump is used to force the liquid phase to circulate. The heat energy is transferred to the heating equipment. Then it is returned to the reheated DC special industrial furnace. This cycle is repeated to achieve continuous heat transfer and increase the temperature of the heated object to heating process requirements.
Performance characteristics of heat-conducting oil furnace: 1. Obtain low-pressure and high-temperature heat medium, easy to adjust, uniform heating, and can meet the precise process temperature. 2. Liquid phase circulating heating, no heat loss due to condensate discharge, and high thermal efficiency of heating system. 3. The working medium is heated and exothermic, and the temperature changes the volume change. There are compensation technical measures in the system. 4. Before circulating heating, there are technical measures to strictly control the air, moisture and other low volatile matter content in the working medium.
The following compares the operating costs of heat-conducting oil furnaces as examples:
The operating cost required to heat 10 tons of hot water to 45 ° C, 1 kilogram of water requires 1 kcal of heat to heat 1 degree, calculated based on 10 degrees of tap water: 45-10 = 35 degrees (Δ = 35 degrees) 10 tons of water = 10,000 kg warming 1 degree = 10000 X 1 kcal = 10000 kcal warming 35 degrees = 10000 kcal X 35 = 350000 kcal.
Electric heating oil furnace:
The heating value of electricity: 860 kcal / KW, according to the industrial electricity standard, the price of electricity is calculated at 1.2 yuan / degree. 350000 kcal ÷ 860 kcal X 1.2 yuan = 488 yuan, the thermal efficiency of electric heating boilers is generally 98%, 488 ÷ 0.98 = 498 yuan.
Fuel conduction oil furnace:
The calorific value of 0 # diesel is 9600 kcal / kg. According to the current diesel price per kilogram, it is calculated at 7.1 yuan. 350000 kcal ÷ 9600 kcal X 7.1 yuan = 259 yuan. The thermal efficiency of fuel oil boilers is generally 90%, 259 ÷ 0.9 = 288 yuan.
Gas heat conducting oil furnace:
The calorific value of natural gas is 8600 kcal / m3. Based on the price of natural gas in various places, the average value is 3.3 yuan per cubic meter. 350,000 kcal ÷ 8600 kcal X 3.3 yuan = 135 yuan. The thermal efficiency of gas boilers is generally 90%, 135 ÷ 0.9 = 150 yuan.
Through comparison, it is not difficult to find that the operating cost of the heat-conducting oil furnace is more than three times the cost of burning natural gas. The cost of fuel is still acceptable. Design a plan.