The development and application process of the heating fan coil units are introduced with some practical reconstruction project as an engineering example.

Through comparison of economical efficiency,advantages and disadvantages between two heating methods as low-temperature hot-water floor radiant heating and fan-coil heating,the author decides to take low-temperature hot-water floor radiant heating system as heating method of library engineering in Shijingshan district,which has low cost and comfortable sensation and is worthy to be popularized.

Analysis on typical problems in air-water fan-coil unit system;

Comparison of the methods for type selection of fan-coil unit;

Determination of inlet water temperature in dry cooling condition for fan-coil unit;

Disassembly and cleaning for fan-coil units of centrol air-conditioner;

Based on the analysis of the shortcomings of unitary air-conditioners and fan-coil units used in residential buildings,the design principles of a new type of residential fan-coil units are discussed,then the detailed design methods are proposed.

According to the statement of the type selection and arrangement of fan-coil units combined air condition engineering with construction,this paper points out that type selection should consider the architecture pattern,determine load,air delivery and air distribution.

Discussion on applicability of dry condition fan-coil unit systems;

Application performances of ordinary fan-coil unit to water systems with large temperature difference;

Design and software development of evaporative cooling fresh air handling unit plus dry cooling condition fan-coil unit system;