Spray condensation, high temperature water source heat pump combined with flue gas waste heat recovery device

Abstract

The invention discloses a spraying condensing and high temperature water source heat pump combined smoke waste heat recycling device which is composed of a gas boiler system (1), a smoke condensing system (2), a water storing system (3), a high temperature water source heat pump system (4) and an electric control cabinet (5). The device has the advantage that 1 smoke is subjected to spraying condensing, the smoke and water are in direct contact to exchange heat, a second-level high temperature water source heat pump evaporator and the sprayed condensed water exchange heat, the heat exchange is high in efficiency, the smoke discharging temperature is low, the boiler efficiency can reach about 106%, the device is simple, and the investment is saved; 2 most nitric oxide in the smoke is dissolved into water, and atmosphere pollution is reduced; 3. the high temperature water source heat pump is adopted, a part of return water in the outer network is heated to reach the outer network water temperature, and the water is directly delivered into an outer network water supply pipe; 4 a PH sensor is arranged in a water collection tank, and agent is added from a water injection pipe regularly to maintain that the water is neutral.

Description

technical field [0001] The technical solution of the present invention belongs to the field of fluid heaters with heat generating devices in general, specifically, it belongs to the field of heat generating devices which are especially suitable for extracting latent heat from flue gas by condensation. According to the International Patent Classification, Belongs to F24H8 / 00. Background technique [0002] The design efficiency of civil gas-fired boilers in my country is generally 90%-93%, and the actual exhaust gas temperature is mostly 120-180°C. When the exhaust gas temperature drops to 50°C, the efficiency can reach 103%, and when it drops to 40°C, the efficiency can reach 106%. Therefore, the waste heat utilization of gas-fired boiler flue gas is an energy-saving method with low investment and high income, and it is one of the top ten energy-saving projects in my country. Existing patents, such as my country's Patent No. 201120282736.4, are titled "A Gas-fired Boiler Fl...

AI Technical Summary

Problems solved by technology

However, there are still shortcomings in this technology, that is, the heat exchange efficiency between the flue gas and the air-water heat exchanger and the air source heat pump evaporator is low, and a huge space and equipment are required

Images