温度差を有効に利用した空調システム

Abstract

As there is often some temperature difference between two rooms or even in one room, it must be controlled to some constant uniform temperature as quickly as possible.In speaking room temperature, both heating and cooling are considered, but in this paper we consider only the case of heating a room. We tried to develop a new system using a microcomputer and a wall-reattachment amplifier in duct-type air-conditioning system. Two outlets of this fluidic element were connected to two rooms using ducts.If we put temperature of room No. 1, A and the temperature of room No. 2, B (B<Ts<A, Ta<Ts, Ts : setting temperature, Ta : ambient temperature), B must be raised to temperature Ts, while A must be decreased to temperature Ts. In order to make the room No. 2 of lower temperature higher to the setting temperature, an electromagnetic valve was open and control flow was supplied through a control nozzle on the attached side. When hot main jet was supplied through the element to the room No. 2, warmer air in room No. 1 flowed back to the lower temperature room No. 2 because of entrainment effect caused by the main jet.Then, the temperature of both rooms can be controlled much faster. A savings in energy can be achieved by using this system. The temperature measuring devices detected electronically of both rooms temperatures.These temperature signals were compared and used to control of both rooms temperatures by a microcomputer. A mathematical model of the room temperature variations was used to explain controlling phenomenon.This model can estimate the temperature variations of two rooms. This system can be applied for temperature control of a hothouses and factories.