通信行业2021年回顾及2022年展望

首先回顾了中国2021年移动互联网的发展,包括以下三大特点:非接触线上业务取替接触式业务、行业级应用与消费级应用成为两大业务市场、运营模式合作兴起与竞争并存,随后对中国与世界其他国家的运营商进行比较,最后提出了对中国电信业2022年发展的三点期望:要重视"扬帆"行动,及时走进数字经济主战场;要把握好5G与6G的轻重缓急;要理性审慎对待元宇宙。     

Performance analysis of an innovative small-scale trigeneration plant with liquid desiccant cooling system

The paper deals with an innovative natural gas combined heat, cooling and power (CHCP) system with electrical, heating and cooling capacities of 126/220/210 kW, respectively. The trigeneration plant is composed of a cogenerator which uses an automotive derived gas fired internal combustion engine (ICE), coupled to a liquid LiCl-water desiccant cooling system which recovers heat from the flue gases and from the ICE cooling water. The paper describes the energetic and economic analyses of the plant and it makes some evaluations of the effects of fuel and electric prices and of the subsides and plant costs on the economic indices of the system.     

Comparative financial analysis of electricity utilities in West Africa

Access to electricity is a major issue in West Africa. Governments have a difficult equation to solve. They naturally seek to offer their people a cheap kWh. But they are constrained by a production based largely on oil and therefore highly volatile production costs. How to fix an acceptable tariff, taking into account the investment needs required to expand the network and increase production? This analysis should provide some answers.