Case Studies of Energy Saving and CO<sub>2</sub>Reduction by Cogeneration and Heat Pump Systems

• 作者: Satoru Okamoto
• 来源期刊: 能源效率(英文)
• 学科: 医学
• 关键词: COGENERATION SYSTEM Heat Pump SYSTEM Energy Saving CO2 REDUCTION Hospital AQUARIUM
• 年，卷（期）: 2013,（2）
• 页码范围: 107-120
• 页数: 14页
• 分类号: R73

摘要

This paper describes two case studies: 1) a cogeneration system of a hospital and 2) a heat pump system installed in an aquarium that uses seawater for latent heat storage. The cogeneration system is an autonomous system that combines the generation of electrical, heating, and cooling energies in a hospital. Cogeneration systems can provide simultaneous heating and cooling. No technical obstacles were identified for implementing the cogeneration system. The average ratio between electric and thermal loads in the hospital was suitable for the cogeneration system operation. An analysis performed for a non-optimized cogeneration system predicted large potential for energy savings and CO2 reduction. The heat pump system using a low-temperature unutilized heat source is introduced on a heat source load responsive heat pump system, which combines a load variation responsive heat pump utilizing seawater with a latent heat-storage system (ice and water slurry), using nighttime electric power to level the electric power load. The experimental coefficient of performance (COP) of the proposed heat exchanger from the heat pump system, assisted by using seawater as latent heat storage for cooling, is discussed in detail.