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Analysis of atmospheric combustion inverted condensing gas heating water heater

2018-04-02 15:08:46 Category:Industry information Visits

【Introduction】In recent years, the sales of gas heating and hot water furnaces are growing at a high rate of about 20% each year. It is obvious that energy saving is an imminent, heavy and far - going work in the gas heating and hot water furnace industry.

In recent years, the sales of gas heating and hot water furnaces are growing at a high rate of about 20% each year. It is obvious that energy saving is an imminent and long way to work in the gas heating and hot water furnace industry.

Ordinary gas heating hot water furnace often uses atmospheric combustion mode, the exhaust gas temperature is too high, mostly between 160 C -200 C, a lot of heat is not fully utilized and wasted.

The condensing gas heating hot water heater is a product with less energy consumption, fast heating and high thermal efficiency. It has obvious energy saving effect. The thermal effect of full premixed combustion technology can reach about 107%.

The European condensing gas wall hanger furnace has been producing history for several decades and its technology is mature. The main mainstream design is two major schools of side full premixed combustion and inverted full premixed combustion. The key technology has been patented in all directions. Chinese enterprises must develop a new way to develop condensing gas wall hanging furnace.

Condensing gas wall hung furnace mainly uses sensible heat and latent heat through two ways.

1. the excess air coefficient is reduced largely; reduce the amount of flue gas dew point, increased release of latent heat increase.

2., reduce exhaust gas temperature, increase heat transfer area and improve thermal efficiency.

By adding two times of the condenser and increasing the heat transfer area moderately, the atmosphere gas mode is still used, and the thermal efficiency can reach about 100.3%, which is higher than the standard of the first level energy efficiency of the State stipulated by the state.

From this point of view, we will get great design space and better economic benefits, which is also a very meaningful research work.

Schematic diagram

  

Usage method:

When the fan is supplied, the fan and water pump start and fire, and the gas burns from the gas pipe into the combustion chamber.

The circulating water is heated by the two condenser from the backwater pipe and then heated by the heat exchanger. The hot water is heated by the family. The circulating water is reflued again into the heat exchanger to be heated alternately.

After the heat exchange of two condensers, the temperature of the flue gas decreased from 180 to 50 -70 C, and the thermal efficiency could reach about 100.3%. The condensate produced from the condensate flowed from the condensate nozzle.

When hot water is used, the three-way valve is turned to the phase, and the cold water is used for heat exchange in the plate heat exchanger, so that the hot water is generated for people to bathe.

Plate change two condenser schematic:

  

The two condenser is equipped with an elliptical condenser tube, which increases the heat exchange area and forms a simple and compact water supply channel.

The upper end of the two condenser is a smoke pipe and the lower end is a smoke inlet pipe.

The bottom of the two condenser is the condensate nozzle.

Schematic diagram of cased two - time condenser:

  

The two condensers are equipped with heat transfer fins, heating condensing pipes and bathroom condensing pipes are interspersed on the heat transfer fins.

The smoke deflector makes the flue gas flow in the two condenser (arrow direction).

The upper end of the two condenser is a smoke pipe and the lower end is a smoke inlet pipe.

The bottom of the two condenser is the condensate nozzle.

Title:Analysis of atmospheric combustion inverted condensing gas heating water heater         URL:http://www.boroachina.com/en/news/844.html