Thread Content
1. What is radiation loss or heat dissipation loss? Radiation loss refers to the heat lost to the surroundings from the outer walls of the heating furnace, flue ducts, and auxiliary equipment (when a heat recovery system is used), and it is expressed as a percentage of the total heat released. 2. What is the heat load of a heating furnace? The heat load of a heating furnace refers to the amount of heat absorbed per hour by the medium being heated inside the furnace tubes. 3. What is the surface heat intensity of a furnace tube? The amount of heat absorbed per square meter of the furnace tube’s surface area within 1 hour is called the surface heat intensity of the furnace tube, and it is expressed in W/m2. 4. What is the average heat intensity of a furnace tube? (1) In the radiation chamber: The average heat intensity of a furnace tube refers to the total amount of heat absorbed by the medium inside the furnace tube within 1 hour, divided by the total external surface area of the furnace tube, and is expressed in W/m2. (2) In the convection chamber: ① Based on the surface of the light tube, the average heat intensity of the furnace tube refers to the total amount of heat absorbed by the medium inside the convection tube within 1 hour, divided by the total external surface area of the light tube (excluding the studs or fins), expressed in W/m2. ②Based on the surface of the light tube, the nail heads, or the fins: the average heat intensity of the furnace tube refers to the total amount of heat absorbed by the medium inside the convective tube within 1 hour, divided by the total heat exchange area (including the nail heads or fins), expressed in W/m2. 5. What is the local heat intensity of a furnace tube? The local heat intensity of a furnace tube refers to the amount of heat absorbed by the medium inside the furnace tube within 1 hour, divided by the local heat exchange area of the furnace tube, and is expressed in W/m2. 6. What is the maximum heat intensity of a furnace tube? The maximum heat intensity of a furnace tube refers to the highest local heat intensity within that tube section, expressed in W/m2. 7. What is the volumetric heat intensity of a heating furnace? It refers to the amount of heat released by fuel combustion in 1 cubic meter of furnace volume within 1 hour, and it is expressed in W/m3. 8. What is fuel efficiency? Fuel efficiency is the ratio of the total heat absorbed to the net calorific value of the fuel, expressed as a “percentage”. 9. What is the high calorific value of fuel? The high calorific value of fuel refers to the heat released per kilogram of fuel upon combustion, plus the heat released from the condensation of water vapor in the flue gases. 10. What is the low calorific value of fuel? The low calorific value of fuel refers to the amount of heat released per kilogram of fuel after combustion.