Abstract
The main objective of this chapter is the demonstration of the entire development process leading to prototype fabrication and commercialization of a new, ejector-based system for refrigeration that is environmentally clean and is powered by low quality heat, either solar or waste, without any need for electricity. In many rural areas throughout the world, the availability of fresh food is limited by lack of refrigerated warehousing facilities often due to limited access to electrical power. Authors are describing a new, ejector-based refrigeration system that 1) utilizes solar or waste heat (below 100°C temperature) as a main source of energy; 2) eliminates the mechanical compressor, which is a main user of electricity and the main contributor to maintenance and reliability issues in cooling systems; and 3) operates without any ozone depletion effects and any greenhouse gas emissions, when used with natural refrigerants. Such a technique contributes to protection of the ecosystem, conservation of energy, and broad application of alternative energy sources.