Application of quasi-heat-moisture-ratio line approximation on the design of freezing dehumidification-based radiant air-conditioning system

摘要

For the purpose of realizing non-dewfall condition of the radiant panels,low energy consumption and nice comfort of the freezing dehumidification-based radiant air-conditioning system,the design temperature and humidity of the room were figured out according to the mean comfort index of human body during the design.And in order to lower the energy consumption,the necessity of the reasonable load allocation between the dehumidification unit and the radiant unit was discussed by means of the calculation with the quasi-heat-moisture-ratio line.As a result,much more precise design parameters were acquired through the approximation calculation.And it was proven to be a good design method by applying these parameters to the design of the reading rooms of the library.In the design example of the reading room,the load ratio between the dehumidification unit and the radiant unit was 48 to 52,and the recirculation air flow rate of the dehumidification unit was not less than 36.8％ of the total air rate of the room.