Flue gas type lithium bromide absorption cold and hot water unit for heating at room temperature and exhausting smoke

Abstract

The invention relates to a smoke-type lithium bromide absorption type water chiller-heater unit for heating and normal temperature smoke exhaust. The unit is characterized in that the unit is additionally provided with a smoke heat exchanger (18), a flash vessel (19), a heating absorber (20), a heating solution heat exchanger (21) and a heating cryogen pump (22); a hot water pipeline is additionally arranged on a cold and hot water inlet pipe (15) of the unit; hot water in the hot water pipeline enters a heat exchange pipe of the heating absorber (20); a weak solution pipeline is additionally arranged on a solution pump outlet pipe (12) of the unit; a weak solution in the weak solution pipeline is cooled by the heating solution heat exchanger (21) and then enters the heating absorber (20) to be sprayed; a low-temperature cryogen water supplement pipeline is additionally arranged on an evaporator liquid bag (14) of the unit; cryogen water in the low-temperature cryogen water supplement pipeline enters a flash vessel liquid bag (26) to act as low-temperature cryogen supplemented water; and low-temperature cryogen water in the flash vessel liquid bag (26) is driven by the heating cryogen pump (22) into the smoke heat exchanger (18) to be heated, then the heated cryogen water enters the flash vessel (19) to be subjected to flash evaporation. With the adoption of the unit, the smoke exhaust temperature is reduced effectively, and the energy source comprehensive utilization rate of a system is increased. The unit is simple to operate.

Description

technical field [0001] The invention relates to a flue gas type lithium bromide absorption cold and hot water unit. It belongs to the technical field of air conditioning equipment. Background technique [0002] At present, in the field of natural gas distributed power generation and industrial furnace applications, the temperature of the flue gas emitted by gas-fired generator sets and industrial furnaces is relatively high (about 400°C), and the heat taken away by the exhaust gas and its proportion to energy consumption are relatively large , In order to recycle the waste heat of flue gas, some occasions are promoting the application of flue gas-type lithium bromide absorption type cold and hot water unit technology to improve the comprehensive utilization rate of energy and reduce environmental pollution. [0003] Flue gas-type lithium bromide absorption cold and hot water units use high-temperature flue gas discharged from external devices such as internal combustion eng...

AI Technical Summary

Problems solved by technology

Due to the limitation of the outlet temperature of the heating hot water produced, the solution temperature is high, resulting in a high exhaust gas temperature, which affects the comprehensive energy utilization rate of the entire system. For example, when the heating water outlet temperature is 60°C, the exhaust gas temperature At about 145°C, the comprehensive energy utilization rate of the whole system is generally about 72%, especially in the cold winter, when the outdoor temperature is low, the chimney emits white smoke, which wastes energy and pollutes the environment

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