The Research Of Energy Conservation For Constant Temperature And Constant Humidity Air-conditioning

Along with the development of economy, domain of the constant temperature constant humidity environment's application and demand is increasing day by day. Simultaneously the reality of the shortage of energy, forced us to mention the energy conservation question in a very important position recently. Therefore, knowing the present existence question clearly, using air-conditioning system's energy highly effectively, and taking the effective energy conservation measure becomes urgently needs to solve.This article made the detailed analyze about the summer, winter and the transition season pattern's air treatment process of the pure steam humidification and primary return air's constant temperature and constant humidity air conditioning unit which is commonly used, carried on the control decomposition to the temperature and the humidity parameter's control, and gave the control diagram.The paper made the transformation in the original constant temperature and constant humidity air conditioning, provided a new kind of constant temperature and constant humidity air-conditioning system which can conserve energy, analyzed how to realize the function in the new style constant temperature and constant humidity air-conditioning system , simultaneously made the energy consumption computation. The paper made the detailed introduction that the new style air-conditioning system how to realize automatic control of the temperature and the humidity. The new style constant temperature and constant humidity air-conditioning system's feasibility study result indicated that this kind of air-conditioning system has the universal serviceability.The paper proposed that applying the variable dew point to control the indoor relative humidity. This article proposed that applying the fuzzy control in the constant temperature and constant humidity air-conditioning system control humidity's control policy, and applying the fuzzy PID control policy in the constant temperature and constant humidity air-conditioning system, which obtained the summer and the winter patterns' variable dew point control cascade fuzzy control closed-loop systems.The paper used the indoor humiture control in a project example, applied the variable dew point cascade fuzzy control closed-loop system in the controlling room's humidity, and applied PID control in room's temperature. With the aid of the related tool, the article carried on the simulation to the project example's summer and the winter operating mode. The simulation result indicated: Applying the new style constant temperature and constant humidity air-conditioning system that this article proposed and applying the variable dew point cascade fuzzy control closed-loop system control the indoor relative humidity, using PID to control the temperature, may achieve the humiture accuracy requirement which the project requests.