Heat powered adsorption compressors for refrigeration and air-conditioning applications.

DOI: 10.18462/iir.compr.2024.0682

Sekcia: Reciprocating compressors II

Stav prijatia: Abstrakt odmietnutý

Autori

Abstrakt

Thermal Energy Science & Technology (TEST) laboratory, Department of Mechanical Engineering, Faculty of Engineering, Ariel University, Ariel 40700, Israel

Abstract
In recent decades we witness a surge in electricity consumption rates, which escalates carbon dioxide emissions and increases global warming and other deleterious environmental impacts. There exists substantial interest in heat-driven cycles to reduce electric power consumption, allowing less electric power generation and fewer distribution infrastructures.
The current research aims to harness the technology of heat-driven adsorption compressors, initially conceived for cryogenic refrigeration in space applications, for use in conventional refrigeration and air conditioning systems. This research explores the feasibility of integrating thermally driven multi-stage sorption compressors into existing refrigeration and air-conditioning systems, with a focus on two prevalent refrigerant gases: carbon dioxide and R404A.Various adsorption cell designs are examined, and a multi-stage sorption compressor for carbon dioxide is presented in details, assessing its coefficient of performance and efficiency. The paper presents the results of cylindrical sorption cells with different outer diameters and subjected to different heating temperatures. Although the COP values are still relatively low, in the range of 0.01, the presented research paves the way to an attractive technology of heat driven refrigeration and air-conditioning. Unlike absorption compressors, which are valid for few refrigerants (mainly water and ammonia), adsorption compressors are suitable for any refrigerant, they are smaller in dimensions, they benefit the absence of moving parts.

Kľúčové slová

Compressor, Adsorption, Refrigeration, Air conditioning, heat powered