Steam type heat pump and hot water type refrigerating lithium bromide absorption unit

Abstract

The invention relates to a steam type heat pump and hot water type refrigerating lithium bromide absorption unit. The unit comprises a steam generator, a hot water generator, a condenser, an evaporator, an absorber, a heat exchanger, a solution pump and a refrigerant pump. A coolant water U-tube of condenser coolant water entering the evaporator is divided into two tubes from the bottom, one of the coolant water tube is provided with a coolant water ball valve, and the other coolant water tube is provided with a coolant water liquid sealer. Coolant water of the two tubes enters the evaporatorafter being converged; and a concentrated solution adjusting valve is arranged on a concentrated solution absorber tube. The forming of pressure difference and adjustment of the solution circulation amount are achieved through the concentrated solution adjusting valve on the solution side, forming of pressure difference and flow of coolant water on the coolant water side are ensured through the coolant water ball valve and the coolant water liquid sealer which are additionally arranged on the coolant water U-tube, thus, the unit can be safely and reliably operated under both heating and cooling conditions and achieves two purposes, and the initial equipment investment cost is reduced.

Description

technical field [0001] The invention relates to a lithium bromide absorption unit of steam heat pump and hot water refrigeration, which belongs to the technical field of refrigeration equipment. Background technique [0002] In the production process or life, it is necessary to use air conditioners to heat or cool, and these need to consume a certain amount of energy to achieve. There is a large amount of medium (low) temperature waste heat in some production processes, and some waste heat is discharged because it cannot be used, resulting in waste. In order to save energy and reduce emissions, lithium bromide absorption heating or cooling technology is now used to recycle this part of waste heat to achieve the purpose of heating or cooling. In general, when there is low-temperature waste heat (temperature about 35°C) and steam needs to be heated, the preferred product is the steam-type first-class lithium bromide absorption heat pump unit (see flow chart figure 1 ); when ...

AI Technical Summary

Problems solved by technology

For the above situation and parameter conditions, if heating is required in winter and cooling is required in summer, it is necessary to invest in two units, one for heating and the other for cooling, and the initial investment cost will be relatively large. On the same unit, the steam heat pump can be used to recover low-temperature waste heat for heating in winter, and the waste hot water can be used to drive refrigeration in summer. One machine can be used for two purposes, reducing investment costs, saving energy, and being safe and reliable. It has become one of the important topics of current research.

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