Transient behavior assessments of a single-effect ammonia-water absorption heat pump system: Development of an efficient experimentally validated numerical framework

2021 ◽  
Vol 177 ◽  
pp. 121252
Author(s):  
Babak Dehghan B ◽  
Marcello Aprile ◽  
Lorenzo Pistocchini ◽  
Tommaso Toppi ◽  
Mario Motta
Keyword(s):  
Water Absorption ◽  
Heat Pump ◽  
System Development ◽  
Transient Behavior ◽  
Pump System ◽  
Ammonia Water ◽  
Absorption Heat Pump ◽  
Heat Pump System ◽  
Single Effect

Performance characteristics of an ammonia-water absorption heat pump system

2013 ◽  
Vol 37 (14) ◽  
pp. 1917-1927 ◽  
Author(s):  
Mohamed A. Gadalla ◽  
Talaat A. Ibrahim ◽  
Mohamed A. M. Hassan
Keyword(s):  
Water Absorption ◽  
Heat Pump ◽  
Performance Characteristics ◽  
Pump System ◽  
Ammonia Water ◽  
Absorption Heat Pump ◽  
Heat Pump System

Heating Mode of Type I Ammonia-Water Absorption Heat Pump with Parabolic through Collector

2013 ◽  
Vol 433-435 ◽  
pp. 2250-2253
Author(s):  
Zhao Wang ◽  
Bing Feng Zhao ◽  
Zhen Li
Keyword(s):  
Water Absorption ◽  
Energy Saving ◽  
Heat Pump ◽  
Test Data ◽  
Type I ◽  
Pump System ◽  
Ammonia Water ◽  
Absorption Heat Pump ◽  
Heat Pump System ◽  
Heating Mode

Presents the application of the system to a project in Dezhou. Tests the application effect and the COP of absorption heat pump units and the heat pump system. Analyses and evaluates the energy saving property of the system based on the test data, providing reference for other similar application.

Ejector Influence on Performance of Ammonia Absorption Heat Pump System

2012 ◽  
Vol 163 ◽  
pp. 107-110
Author(s):  
Wei Sheng ◽  
Xiu Fang Liu ◽  
Xiao Zhuan Chen ◽  
Hua Wang
Keyword(s):  
Performance Analysis ◽  
Heat Pump ◽  
Coefficient Of Performance ◽  
Pump System ◽  
Absorption Heat Pump ◽  
Heat Pump System ◽  
Ammonia Absorption ◽  
Single Effect ◽  
Set Up

A single-effect ammonia absorption-ejection heat pump system is set up. Combined with T-S diagram, performance analysis is presented on the heat pump system with ejector or without ejector. The results show that, with the ejector coefficient equal to 0.5, and the cooling coefficient of performance of the single-effect ammonia absorption heat pump equal to 0.3, 0.45 and 1.45 can at least be gained for the heating coefficient of performance and the cooling coefficient of performance respectively. In this paper, relation curve diagram is also presented for the heating coefficient of performance of absorption-ejection heat pump system, the cooling coefficient of performance of single-effect absorption heat pump system and the ejector coefficient.

The effect of lithium bromide on the performance of ammonia-water absorption-resorption heat pump system

2020 ◽  
Vol 181 ◽  
pp. 115888 ◽  
Author(s):  
Zhenghao Jin ◽  
Shuhong Li ◽  
Mengkai Xu ◽  
Chengcheng Xu ◽  
Lijie Feng ◽  
...  
Keyword(s):  
Water Absorption ◽  
Heat Pump ◽  
Lithium Bromide ◽  
Pump System ◽  
Ammonia Water ◽  
Heat Pump System

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

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.

Development and demonstration of a compact ammonia–water absorption heat pump prototype with microscale features for space-conditioning applications

2016 ◽  
Vol 102 ◽  
pp. 557-564 ◽  
Author(s):  
Srinivas Garimella ◽  
Christopher M. Keinath ◽  
Jared C. Delahanty ◽  
Dhruv C. Hoysall ◽  
Marcel A. Staedter ◽  
...  
Keyword(s):  
Water Absorption ◽  
Heat Pump ◽  
Ammonia Water ◽  
Absorption Heat Pump
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