The cooperative work of the International Energy Agency (IEA) on evacuated collector systems (IEA Solar Heating & Cooling Programme, TASK VI: Performance of Solar Heating, Cooling, and Hot Water Systems Using Evacuated Collectors) covered both experimental and analytical activities on various active solar energy systems, ranging from small domestic hot water to large industrial process heat and...

Nonlinear systems occur in industrial processes, economical systems, biotechnology and in many other areas. The thesis treats methods for system identification and control of such nonlinear systems, and applies the proposed methods to a solar heating/cooling plant. Two applications, an anaerobic digestion process and a domestic solar heating system are first used to illustrate properties of an ...

In order to solve the problem of low gas production biogas digester fermented at natural temperature in winter and possibly freezing northern cold areas, combined with solar heating system is proposed maintain normal fermentation ensure continuous efficient throughout year. Through experiment analysis system, area, can be maintained above 12.5 °C, which meet requirements digester, so it conclud...

With the urbanization process of the hot summer and cold winter (HSCW) zone in China, the energy consumption of space and water heating in urban residential buildings of the HSCW zone has increased rapidly. This study presents the energy efficiency and sustainability evaluation of various ways of space and water heating taking 10 typical cities in the HSCW zone as research cases. Two indicators...