Heating, normal temperature, smoke exhaust, direct combustion type lithium bromide absorption type cold and hot water unit system

Abstract

The invention relates to a direct-fired lithium bromide absorption cold and hot water unit system for heating at room temperature and exhausting smoke, including 2, 3, 4, ... N direct-fired lithium bromide absorption cold and hot water units, which are characterized in that the system increases A device, which includes a flue gas heat exchanger (17), a flash evaporator (18), a heating absorber (19), a heating solution heat exchanger (20) and a heating refrigerant pump (21). Add a hot water pipeline on the hot water inlet pipe (15), and the hot water enters the heat exchange tube of the heating absorber (19); add a dilute solution pipeline on the solution pump outlet pipe (12) of one of the units , the dilute solution enters the heating absorber (19) for spraying; a low-temperature refrigerant water replenishment pipeline (23) is added to the evaporator liquid bag (14) of the unit, and the refrigerant water enters the flasher liquid bag ; The heating refrigerant pump pumps the low-temperature refrigerant water in the liquid bag of the flash evaporator into the flue gas heat exchanger to heat up and then enters the flash evaporator. The invention effectively reduces the exhaust gas temperature, improves the heating efficiency, and is easy to operate.

Description

technical field [0001] The invention relates to a direct-fired lithium bromide absorption cold and hot water unit. It belongs to the technical field of air conditioning equipment. Background technique [0002] The direct-fired lithium bromide absorption cold and hot water unit uses the combustion heat of fuel oil and gas as the heat source, water as the refrigerant, and lithium bromide aqueous solution as the absorbent, and alternately or simultaneously produces cold water and heat for air conditioning or process in a vacuum state. water equipment. Because of its characteristics of balancing energy consumption, environmental protection and power saving, it is widely used as a cold and heat source unit in central air-conditioning systems, especially in large places, often requiring multiple units to run at the same time to meet cooling or heating needs. In the case of 2, 3, 4, ... N units, the external water system provides a general inlet and outlet pipeline, the water of ...

AI Technical Summary

Problems solved by technology

Due to the limitation of the outlet temperature of the heating hot water, the solution temperature is high, resulting in a high exhaust gas temperature, which affects the heating thermal efficiency. For example, when the outlet temperature of the heating hot water is 60 ° C, the exhaust gas temperature of the direct-fired high-pressure generator of the system is 155 ℃, the heating efficiency is about 93%

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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