Two-stage lithium bromide absorption heat pump unit with functions of single-effect heating and double-effect refrigeration
A technology of lithium bromide absorption and heat pump unit, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of large heat exchange area, small heat exchange temperature difference, and difficult to achieve, and achieves reduced heat exchange area and refrigeration performance. The effect of coefficient improvement and material cost reduction
Pending Publication Date: 2019-08-27
SHUANGLIANG ECO ENERGY SYST CO LTD
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Problems solved by technology
In the case of deep recovery of waste heat, such as figure 2 The unit is not easy to realize, which will result in small heat transfer temperature difference, large heat transfer area, and high unit material cost. In order to meet the heating requirements, the heat pump unit needs to adopt a two-stage type. However, how can it be realized on this two-stage heat pump unit? Double-effect refrigeration improves the coefficient of refrigeration performance and saves steam. Whether it is heating or cooling, it can reduce the heat exchange area of the unit and reduce the material cost of the unit. It is easy to operate, safe and reliable, and has become one of the important topics of current research.
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[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] Such as image 3 As shown, a two-stage lithium bromide absorption unit with single-effect heating and double-effect refrigeration includes a steam generator I13, a condenser I12, an evaporator I27, an absorber I28, a heat exchanger I31, a solution pump I25, and a refrigerant Pump I26, steam generator II14, condenser II15, evaporator II22, absorber II21, heat exchanger II17, solution pump II24 and refrigerant pump II23;
[0030] The generator condenser housing of the unit also includes cavity I50 and cavity II51;
[0031] Both the condenser I12 and the steam generator I13 are arranged in the cavity I50;
[0032] Both the steam generator II14 and the condenser II15 are arranged in the cavity II51;
[0033] A low-pressure generator 36 is also added in the cavity II51, and the low-pressure generator 36 is arranged above the steam generat...
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The invention relates to a two-stage lithium bromide absorption heat pump unit with the functions of single-effect heating and double-effect refrigeration, and belongs to the technical field of refrigeration equipment. The unit comprises a steam generator I, a condenser I, an evaporator I, an absorber I, a heat exchanger I, a solution pump I, a coolant pump I, a steam generator II, a low pressuregenerator, a condenser II, an evaporator II, an absorber II, a heat exchanger II, a solution pump II, a coolant pump II, a stop valve A and a stop valve B. According to the two-stage lithium bromide absorption heat pump unit with the functions of single-effect heating and double-effect refrigeration, through valve switching, the unit runs according to the two-stage heat pump principle when the heating condition is performed in winter; and the unit runs according to a steam double-effect solution parallel refrigeration process when the refrigeration condition is performed in summer. Meanwhile,the double-effect refrigeration performance coefficient is improved greatly, and steam consumption is reduced; the unit has double functions, and the initial investment of equipment is reduced; and the occupied space is saved.
Description
technical field [0001] The invention relates to a two-stage lithium bromide absorption heat pump unit with single-effect heating and double-effect refrigeration, belonging 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 required, and deep recovery of waste heat is required, the waste water has a large cooling range and low temperature, and the hot water produced has a high temperature rise and a large temperature difference. Multi-stage first-class lithium bromide absorption heat pump units (such as figure 1 It is a two-stage steam type first-class lithium bromide absorption heat pump unit), which can save a large amount (more than 40%) of medium-pressure steam consumption and realize comprehensive utilization of energy. In some occasions, not only heating is required in winter, but cooling is also required in summer. In order to be a...
Claims
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IPC IPC(8): F25B15/06F25B41/04F25B41/20F25B41/24
CPCF25B15/06F25B41/40F25B41/20Y02B30/62Y02A30/27
Inventor毛洪财王炎丽
OwnerSHUANGLIANG ECO ENERGY SYST CO LTD