The difference between using heaters and hot air stoves in greenhouses
1. Hot air heating does not require water at all. There is no need for water pipes, radiators, circulation pumps, etc. Instead, hot air is sent directly into the heating points and spaces, with very little heat loss and greatly reduced investment in ancillary equipment. Water heating has the disadvantages of slow heating and poor adjustability, and requires a certified fireman to be on duty 24 hours a day, while hot air heating has fast heating and strong adjustability, and can be flexibly controlled when it is stopped or started. In addition, the hot blast furnace operates without pressure and does not require a full-time furnace operator. The operation is safe and reliable. Water is a weak electrolyte and has certain corrosive properties. The water boiler must be cleaned and inspected at least once every two years. Treatment measures must be implemented for hard water. The efficiency of the water boiler Showing a sharp downward trend every year.
2. The operating cost is extremely low compared with traditional heating. Compared with steam and hot water heating, hot air heating can increase the heating efficiency by more than 50%, save energy by more than 60%, and reduce investment and maintenance costs by about 60%, which has obvious economic benefits. No civil engineering investment is required, and the main equipment can be used in the open air. As long as the temperature is reached, the hot blast stove can be pressed at any time, and the automatic shutdown rate can reach more than 50% (no need to add coal during this time).
3. Strong heating capacity and wide heating range. Hot air heating can be adapted to different needs such as the height and length of the heating space by selecting the size of the furnace and configuring the wind pressure, wind speed and air volume of the fan on the furnace. The company's hot blast furnace series ranges from 2 to 5 million kcal/hour, and the corresponding heating area can range from 100 to 40,000 square meters.
4. The air circulates quickly, which is convenient for eliminating harmful gases and purifying the ambient air. It can also humidify hot air and adjust the ambient humidity.
It consists of the main body of the hot blast stove, a chimney, a chimney waste heat recovery device, a combustion-supporting device, a fan, an electronically controlled temperature measurement device, an air inlet duct, a return air duct, and a ventilation device.
The working principle of the equipment:
The hot air stove generates pure hot air with a temperature of up to 180°C. The metal pipe directly enters the space to be heated through the outlet of the hot air stove (behind). Some parts can be ventilated with canvas bags). The air inlet duct has an air dispersion outlet at an angle of 120 to reasonably adjust the air volume and temperature of the space (if local high temperature is required, additional valve adjustment is required). There is also a main fan on the top of the hot air stove to absorb the waste heat from the chimney and the required heating. Space air recycling. The combustion-supporting device reasonably adjusts the oxygen intake of the hot blast stove, controls the flame size, and controls the outlet air temperature; an external automatic humidification device is added for areas that require humidification.
Features of the equipment:
1. It adopts the gyro heat exchange method with high heat energy conversion efficiency; the chimney heat energy recovery device has high heat energy utilization rate.
2. Pipe air supply is used to heat the air and send it into the room. The air is fresh and the temperature is uniform; no water is needed, there is no hidden danger of scale and freezing, and there is no need to install an additional radiator, and there is no need for secondary replacement. Hot; The five sides of the hot blast furnace body are insulated with 50mm thick high-quality glass wool, which minimizes heat loss and the overall heat utilization rate reaches more than 90.
3. Using more advanced negative pressure oxygen-rich combustion technology, it is not picky about coal or other fuels. No matter what coal is used, it can ensure transparent combustion and completely avoid the instability of furnace temperature caused by positive pressure combustion. Defects such as uniform combustion, opaque combustion, overflowing smoke, and local burning damage; energy saving starts with combustion.
4. The heat exchange part in the furnace - the refractory tube is made of our company's patented anti-corrosion technology and can be used at high temperatures of 1450°C for a long time without damage, thus improving the trouble-free operation of the hot blast stove by 3- 5 years, the overall service life reaches more than 8 years.
5. The entire set of equipment saves investment, is easy to operate, is safe and reliable, has basically no maintenance costs, is easy to install, and has excellent heating effects. It is ideal for offices, workshops, flower greenhouses, vegetable greenhouses, livestock breeding and other industries. Ideal for heating equipment.
6. Coal-fired province: Coal-fired in this way is less than 50% of ordinary hot water boilers and steam boilers.
Use environment:
1. Offices, spray painting workshops, textile workshops (with automatic humidification), etc.
2. Flower greenhouses and vegetable greenhouses.
3. Poultry and livestock breeding greenhouses.