Thermodynamic Assessment of Waste Heat Operated Combined Compression–Absorption Refrigeration System

2014 ◽  
pp. 193-205
Author(s):  
Abdul Khaliq ◽  
Ibrahim Dincer
Keyword(s):  
Thermodynamic Assessment ◽  
Waste Heat ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System

Thermal Energy Requirements of Air-Conditioning Systems

1971 ◽  
Vol 93 (2) ◽  
pp. 172-176
Author(s):  
M. E. Lackey
Keyword(s):  
Thermal Energy ◽  
Air Conditioning ◽  
Waste Heat ◽  
Energy Requirements ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Fast Breeder Reactors ◽  
Breeder Reactors ◽  
Absorption Refrigeration System ◽  
Air Conditioning Systems

The thermal energy requirements for air conditioning by compressive and absorption methods were determined for light-water, thermal-breeder, and fast-breeder reactors. The energy required to produce a ton-hour of refrigeration varied from 5100 Btu to 13,100 Btu by absorption and from 5600 to 8800 Btu by compression. The amount of waste heat dissipated to the environment at the reactor site as a consequence of producing a ton-hour of air conditioning ranged from an increase of 21,000 Btu for the electric-motor-driven refrigeration system to a decrease of 6000 Btu for the absorption refrigeration system.

Application of waste heat powered absorption refrigeration system to the LNG recovery process

2009 ◽  
Vol 32 (4) ◽  
pp. 687-694 ◽  
Author(s):  
Paul Kalinowski ◽  
Yunho Hwang ◽  
Reinhard Radermacher ◽  
Saleh Al Hashimi ◽  
Peter Rodgers
Keyword(s):  
Waste Heat ◽  
Recovery Process ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System

scholarly journals Experimental analysis of absorption refrigeration system driven by waste heat of diesel engine exhaust

2019 ◽  
Vol 23 (1) ◽  
pp. 149-157
Author(s):  
Mukul Kumar ◽  
Randip Das
Keyword(s):  
Diesel Engine ◽  
Waste Heat ◽  
Combustion Engine ◽  
Engine Performance ◽  
Exhaust System ◽  
Bench Test ◽  
Exhaust Gas ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System

This work presents an experimental study of an ammonia-water absorption refrigeration system using the exhaust of an internal combustion engine as energy source. The exhaust gas energy availability, the performance of the absorption refrigeration system and the engine performance are evaluated. A commercial turbocharged Diesel engine has been tested in a bench test dynamometer, with the absorption refrigeration system adapted to the exhaust system. The maximum COP obtained from the refrigeration system is 0.136 and it has been shown that heat energy available with exhaust gas is capable of producing sufficient cooling capacity for air conditioning the vehicle without requiring any energy input from the engine.

scholarly journals Thermal Analysis of a Forced Flow Diffusion Absorption Refrigeration System for Fishing-Boat Exhaust Waste Heat Utilization

2021 ◽  
Vol 9 ◽  
Author(s):  
Shuai Du
Keyword(s):  
Thermal Analysis ◽  
Waste Heat ◽  
Forced Flow ◽  
The Novel ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Fishing Boat ◽  
Exhaust Waste Heat ◽  
Absorption Refrigeration System ◽  
Diffusion Absorption

Ammonia water absorption refrigeration systems are effective in utilizing fishing-boat exhaust waste heat for cryopreservation. However, the liquid level control and the use of a solution pump characterized by small flowrate and high-pressure head result in poor reliability in the traditional system. Besides, the system must necessarily be designed anti-swaying and anti-corrosion. This paper proposes a forced flow diffusion absorption refrigeration system, in which an inherently leak-free canned motor pump and an ejector are employed to provide the driving forces of the gas and liquid loops. The approximate single pressure operation allows for a simple passive liquid sealing control without throttling valves. The system adopts an integrated cooling strategy which allows the system to operate under swaying conditions, and the external seawater cooled heat exchanger avoids internal corrosion and leakage. The thermal analysis shows the system is valid to be operated under wide operating conditions, and the coupled gas and solution circulation ratios determined the performance of the novel system. There is an optimal ammonia mass fraction difference in the gas loop to obtain the optimal COP. The COP reaches 0.4 when the temperatures at the outlets of the generator, evaporator, absorber, and condenser are 160, −15, 35, and 35°C, respectively. The novel system provides a reliable absorption refrigeration system design for fishing-boat applications.

PERFORMANCE OF VAPOUR ABSORPTION REFRIGERATION SYSTEM USING WASTE HEAT SOURCE

2020 ◽  
Vol 10 (3) ◽  
pp. 45
Author(s):  
J. SIDDHARTHA YADAV ◽  
CH. MANIKANTESWAR RAO ◽  
V. VINAY KUMAR ◽  
◽  
◽  
...  
Keyword(s):  
Heat Source ◽  
Waste Heat ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System

Waste-Heat Driven Miniature Absorption Refrigeration System Using Ionic-Liquid as a Working Fluid

2011 ◽  
Author(s):  
Yoon Jo Kim ◽  
Sarah Kim ◽  
Yogendra K. Joshi ◽  
Andrei G. Fedorov ◽  
Paul A. Kohl
Keyword(s):  
Ionic Liquid ◽  
Waste Heat ◽  
Coefficient Of Performance ◽  
System Level ◽  
Working Fluid ◽  
Operating Efficiency ◽  
Outlet Temperature ◽  
Absorption Refrigeration ◽  
Refrigeration System ◽  
Absorption Refrigeration System

An ionic-liquid (IL) is a salt in a liquid state usually with an organic cation and inorganic anion. ILs provide an alternative to the normally toxic working fluids in absorption systems, such as the ammonia/water system. They also eliminate the problems of poor temperature match, crystallization and metal-compatibility problems of the water/LiBr system. In the present study, an IL is explored the working fluid of a miniature absorption refrigeration system so as to utilize waste-heat within the system for low-cost, high-power electronics cooling. To determine performance benchmarks for the refrigerant/IL (e.g. [bmim][PF6]) pairs, system-level simulations have been carried out. An NRTL model was built and used to predict the solubility of the mixture as well as the mixture properties such as enthalpy and entropy. The properties of the refrigerants were determined using REFPROP 6.0. Saturation temperatures at the evaporator and condenser were 25°C and 50°C, respectively. Chip power was fixed at 100 W with the operating temperature set at 85°C. R32 gave the highest operating efficiency with the maximum coefficient of performance (COP) of ca. 0.55 while R134a and R152a showed comparable performance with the maximum COP of ca. 0.4 at the desorber outlet temperature of 80°C. When waste-heat is available for the system operation, R134a and R152a COPs were comparable or better than that of R32.

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