Capillary network and contrast analysis of fan coil units

Different principle:

Fan coil units using the air convection heat transfer form for the purpose of the heating and cooling, capillary network mainly USES the form of thermal radiation for heating and cooling, both the distinction that having essence. Using capillary network as a radiation end, indoor temperature 28 ℃ in summer, winter 18 ℃; Use of the radiator and traditional air conditioning for terminal, indoor temperature in summer 26 ℃, 20 ℃ in winter, these two kinds of thermal comfort of human is the same. So, achieve the same thermal comfort, the use of radiant cooling, heat, than using convection cooling, heat unit building area requirements of load is smaller, the mainly way of radiation cooling, heat system more efficient.

Different processing methods for temperature and humidity:

Fan coil system is temperature and humidity mixing processing system, for "temperature" processing method is: summer by 7 ℃ cold water cooling, using 55 ℃ or higher temperature hot water heating in winter. Capillary net radiation system are handled separately temperature and humidity, the temperature of the processing method: 18 ℃ high temperature cold water to cool the summer, winter 35 ℃ cold water heating, the temperature at the end of the capillary network requirements made to enhance the efficiency of the heat pump units (COP) (up to 6), the system energy saving has increased dramatically.

Indoor air quality is different:

Mixed with fan coil system is temperature and humidity air conditioning mode, transmission of energy by convection, brings the uneven air distribution of the flow of air, noise pollution, the spread of germs and air-condition disease, etc. Capillary network is handled separately hot wet air conditioning technology ideal choice, capillary net radiation heating refrigeration with humidity control, fresh air system, build the real meaning of healthy and comfortable ecological air conditioning energy conservation and environmental protection.

Installation:

Capillary network diameter 4.3 mm, pipe network light, thin, soft, resistant to high temperature, high pressure resistance, corrosion resistance, can according to the architectural appearance any laid, not restricted, and does not occupy a space. End of the capillary network compared with the traditional fan coil end, can better cooperate with decoration process, build more perfect decoration effect. And capillary net is prefabricated in the factory, the whole installation, and the scene of the conventional fan coil system needs compared to tear open outfit, has simple construction, high construction control, the advantages of the construction quality more secure.

Cost and operation cost analysis:

System cost: fan-coil unit plus fresh air + soil source heat pump, system cost around 350-400 yuan/m2 building, capillary network + air + soil source heat pump, system cost 418 yuan/m2.

Operation cost: fan-coil unit plus fresh air + soil source heat pump, system operation cost in 30 to 50 yuan/m2 / year, capillary network + air + soil source heat pump, system operation cost 10 to 20 yuan/m2 per year, according to the investment returns ratio calculation, three to five years to recover all increase the initial investment.