Minitype flue gas waste heat recovery and storage integrated hot water supply device

Abstract

The invention provides a minitype flue gas waste heat recovery and storage integrated hot water supply device, in particular relates to a minitype flue gas waste heat recovery and storage integrated hot water supply device of a coal heating furnace and a biomass heating furnace, belonging to the technical field of new energies and energy saving. The minitype waste heat recovery and storage integrated hot water supply device comprises a heat storage type water tank (1), a flue pipe (3), a temperature controller (11), a minitype circulating pump (17) and a water tank heat insulator (14). When the device is combined with the conventional heating furnace for use, the heat utilization efficiency can be improved to above 90 percent, comfortable and constant indoor temperature is provided, and a large quantity of energies can be saved while the heating comfort of discrete residents in small towns and countries is greatly improved.

Description

technical field [0001] The invention relates to a small flue gas waste heat recovery device, in particular to a hot water supply device integrating flue gas waste heat recovery utilization and heat storage for a small coal-fired heating furnace and a biomass block heating furnace, which belongs to new energy and energy-saving technologies field. Background technique [0002] The heating stove is a small civilian stove. In the northern regions where there is no central heating in China, especially in small towns and rural areas, almost every family must be equipped with a heating stove to meet the needs of heating and cooking. [0003] Jiang Yi, an academician of the Chinese Academy of Engineering and a professor at Tsinghua University, pointed out in the "China Building Energy Conservation Annual Report 2008" compiled according to their research results: [0004] ① There are nearly 2 billion square meters of decentralized heating in small town buildings in northern China, o...

AI Technical Summary

Problems solved by technology

[0005] ②According to estimates, in 2008, the actual coal consumption in rural areas in northern China exceeded 100 million tons, and the average energy consumption for rural residential heating was 22.6kg standard coal / (m 2 Years), which is equivalent to the coal-fired central heating system with poor heating conditions in cities, but the average indoor temperature is only about 12°C, and the indoor thermal comfort is far lower than the current urban residential level

[0008] ① The effect of water circulation is not ideal

In order to improve the water circulation effect of the system, some users have added a micro-circulation water pump to the heat exchange system. This can improve the water circulation effect very well, but at the same time it has buried potential safety hazards. Once a power failure occurs, the hot water system will not work normally. Circulation, it is very easy to overpressure the water jacket (or water plate) and cause an explosion accident

[0009] ②The exhaust gas temperature is high and the heat utilization rate is low

But this will raise the heating center, so that the natural circulation effect of the pressure head is lost

[0010] ③ poor security

[0012] ④ Uneven indoor temperature and poor comfort in different time periods

The heating furnace belongs to the instant heating mode. After the furnace is extinguished or closed, it will not be able to continue to provide heat, resulting in the inability to maintain a balanced and comfortable temperature in the room, that is, it will be hot in the first half of the night and cold in the middle of the night.

[0013] ⑤ Unable to provide domestic hot water for bathing and washing

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