Ultra-large two-stage steam type type-I lithium bromide absorption heat pump unit

Abstract

The invention relates to an ultra-large two-stage steam type type-I lithium bromide absorption heat pump unit. The ultra-large two-stage steam type type-I lithium bromide absorption heat pump unit comprises steam generators, condensers, evaporators, absorbers, a heat exchanger, a solution pump and a coolant pump. The steam generators and the condensers are divided into two stages, the evaporatorsand the absorbers are divided into two stages, the first steam generator and the first condenser have the highest pressure in a first cylinder, the second steam generator and the second condenser havehigher pressure in a second cylinder, the first evaporator and the first absorber have the lowest pressure in a third cylinder, and the second evaporator and the second absorber have lower pressure in a fourth cylinder; and the first cylinder is arranged above the second cylinder, the third cylinder is arranged below the second cylinder, and the fourth cylinder is arranged at the very bottom. According to the unit, under the poor parameter condition provided by an external system, an ultra-large heating capacity of a single heat pump, a small occupied area and a high comprehensive performancecoefficient of the heat pump are achieved, and the difficulty of ultra-high, ultra-wide and ultra-heavy transportation of large items is solved through split transportation.

Description

technical field [0001] The invention relates to a super-large two-stage steam-type first-class lithium bromide absorption heat pump unit, which belongs to the technical field of refrigeration equipment. Background technique [0002] In areas where heat sources are required in production processes and life, and low-temperature waste heat is available, the first type of lithium bromide absorption heat pump unit (such as figure 1 ) to extract low-temperature waste heat, and produce a medium-temperature heat source that is 40°C higher than the low-temperature heat source, which can save a large amount (more than 40%) of medium-pressure steam consumption and realize comprehensive utilization of energy. It has been widely used in recent years and has achieved relatively high Good economic and social benefits. [0003] In practical applications, sometimes the parameters provided by the external system are poor, the steam pressure is low, the temperature of the waste water inlet an...

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Problems solved by technology

[0003] In practical applications, sometimes the parameters provided by the external system are poor, the steam pressure is low, the temperature of the waste water inlet and outlet is low, the temperature difference between the hot water inlet and outlet is large, and the small size of the user's computer room is limited, and a single heat pump requires a large system. In the case of heat, ordinary heat pumps cannot meet the demand

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