The depletion of ozone layers and climate problems have been calling for rapid developments in chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HFCs) free air conditioning and heat pump technologies. Using environmental benign refrigerants such as alcohol in adsorption air-conditioning systems will reduced the production of unwanted ozone depleting substances, whilst activated carbon as adsorbent can achieve higher adsorption capacity and rapid adsorption uptake rates. Additionally, it’s also environmental friendly and harmless. From this viewpoint, utilization of activated carbon adsorption system using natural alcohol as refrigerants has been in demand. The researchers put efforts to enhance the performance of adsorption systems by modification in adsorbent properties, optimizing the adsorbers’ heat exchanger design, and so on towards making this technology competitive with the available cooling system in the market. The objective of this paper is to review on the past efforts of various kinds of researches and methods used to validate the efficiency and suitability of activated carbon as the adsorbent material, with ethanol/methanol for cooling and refrigerant applications.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Surfaces, Coatings and Films
- Management, Monitoring, Policy and Law