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

Design and analysis of an ammonia-water absorption heat pump

2020 ◽  
Vol 165 ◽  
pp. 114531 ◽  
Author(s):  
Nico Mirl ◽  
Fabian Schmid ◽  
Bernd Bierling ◽  
Klaus Spindler
Keyword(s):  
Water Absorption ◽  
Heat Pump ◽  
Ammonia Water ◽  
Absorption Heat Pump

Compact Diesel Engine Waste-Heat Driven Ammonia-Water Absorption Heat Pump Modeling and Performance Maximization Strategies

2021 ◽  
pp. 1-28
Author(s):  
Christopher M. Keinath ◽  
Jared Delahanty ◽  
Srinivas Garimella ◽  
Michael A. Garrabrant
Keyword(s):  
Heat Exchanger ◽  
Water Absorption ◽  
Heat Pump ◽  
Waste Heat ◽  
Cooling Capacity ◽  
Operating Conditions ◽  
Heat Transfer Fluid ◽  
Ammonia Water ◽  
Absorption Heat Pump ◽  
Wide Range

Abstract An investigation of the best ways to achieve optimal performance from a waste-heat-driven ammonia-water absorption heat pump over a wide range of operating conditions is presented. Waste-heat is recovered using an exhaust gas heat exchanger and delivered to the desorber by a heat transfer fluid loop. The absorber and condenser are hydronically coupled in parallel to an ambient heat exchanger for heat rejection. The evaporator provides chilled water for space-conditioning with a baseline cooling capacity of 2 kW. A detailed thermodynamics model is developed to simulate performance and develop strategies to achieve the best performance in both cooling and heating modes over a range of operating conditions. These parametric studies show that improved coefficients of performance can be achieved by adjusting the coupling fluid temperatures in the evaporator and the condenser/absorber as the ambient temperature varies. With the varying return temperatures, the system is able to provide the 2 kW design cooling capacity for a wide range of ambient temperatures.

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.

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