Theoretical comparison of performance of an absorption heat pump system for cooling and heating operating with an aqueous ternary hydroxide and water/lithium bromide

A large number of cooling water exists in chemical plant, use water source heat pump and lithium bromide absorption heat pump system to achieve water cooling instead of cooling tower, at the same time, extract heat for building cooling and heating. Respectively introduced the summer cooling system and winter heating system, and a feasibility analysis was carried out. The conclusion is get: water source heat pump system and lithium bromide absorption heat pump system for cooling water waste heat recovery is certain feasibility; the environment optimization can be achieved in chemical plant, at the same time, energy conservation and emission reduction is realized.

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Influence of Temperature Parameter Change on Lithium Bromide Absorption Heat Pump Performance

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.291-294.1670 ◽

2013 ◽

Vol 291-294 ◽

pp. 1670-1674

Author(s):

Biao Li ◽

Jiang Fan

Keyword(s):

Power Plant ◽

Heat Pump ◽

Waste Heat ◽

Lithium Bromide ◽

Optimal Operation ◽

Pump System ◽

Absorption Heat Pump ◽

Heat Pump System ◽

Heat Pump Unit ◽

The Impact

It is the new way of the thermal power plant energy conservation to recycling plant circulating water waste heat for heating with the heat pump technology. The recovery of low temperature waste heat is the background. And lithium bromide absorption heat pump is the object of this study. The impact of changes in temperature parameters on the performance of heat pump unit is analyzed. As a theoretical basis for the design of the heat pump system and power plant heat pump unit’s optimal operation provide a reference. The result provides a theoretical reference for the optimal operation of the heat pump system design and power plant heat pump units.

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Performance Characteristics of a Combined Ejector-Absorption Heat Pump Using NH3-H2O

10.1115/imece1999-0881 ◽

1999 ◽

Author(s):

D. A. Kouremenos ◽

E. D. Rogdakis ◽

G. K. Alexis

Keyword(s):

Heat Pump ◽

Gain Factor ◽

Coefficient Of Performance ◽

Detailed Calculation ◽

Absorption System ◽

Evaporator Temperature ◽

Pump System ◽

Heat Gain ◽

Absorption Heat Pump ◽

Heat Pump System

Abstract Absorption system have been investigated for many years. However, coefficient of performance COP or heat gain factor HGF for absorption systems are significantly lower than those for conventional compression systems. This has restricted their wide application. This paper discusses the behavior of mixture NH3-H2O through of an ejector, operating in an absorption heat pump system. This combination improves the performance of conventional absorption system and with the phasing out of ozone-damaging refrigerants, absorption refrigerators, heat pumps and air-conditioning now provide a potential alternative. For the detailed calculation of the proposed system a method has been developed, which employs analytical functions describing the thermodynamic properties of die mixture. The influence of three major parameters: generator, condenser and evaporator temperature, on ejector efficiency and heat gain factor of the system is discussed. Also the maximum value of HGF was estimated by correlation of above three temperatures.

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