Sanyo Electric Co., Ltd.

Hisao Honda

Mamoru Kubo

Hidetoshi Arima

Norio Sawada

Nobuhiro Idei

Kazuhiro Shimura

Naohito Sakamoto

Hiroyuki Takada

Toshiyuki Kaneko

Toshio Kubo

Takaki Iwaya

Shigenori Tateshita

In an air conditioning system for circulating a fluid which can change a phase between a gas phase and a liquid phase by a difference of a specific gravity between the gas phase and the liquid phase between an heat source side machine and a plurality of user side machines more than half of which are disposed below the heat source side machine, so that each of the user side machines performs a cooling operation, each of the user side machines is provided with a heat exchanger, a flow control valve for controlling a volume of said fluid supplied to the heat exchanger, a blow means for supplying an air-conditioned air to a room through the heat exchanger, a physical value detecting means for detecting a physical value relating to an air conditioning load such as a temperature and a signal controlling means for the operating and detecting portions, and wherein the heat source side machine is provided with a control means for communicating with said signal controlling means and outputting a control signal to said flow control valve of the user side machine. Accordingly, even in the case that the cooling load is the same, the opening ratio of the flow control valve of the user side machine mounted on the higher floor can be controlled so as to be greater than that of the user side machine mounted on the lower floor. In accordance with the above structure, the air conditioning characteristic in the air conditioning system which is basically controlled by a natural circulation and in which it is hard to supply the fluid to the user side machine mounted on the higher floor, so that it is hard to operate the air conditioning can be improved.

Air conditioning system

In an absorption system hot and cold water supply apparatus for simultaneously supplying hot water and cold water, there is provided a refrigerant blow device for blowing a refrigerant into a refrigerant circulation path, thermo-capacity control device for carring out heating control of a generator by a cold water temperature or a hot water temperature or a combination control of the heating control and a control of a refrigerant flow rate from the generator to and condenser, and control device for controlling the operation of the refrigerant blow device by a cold water exit temperature of an evaporator.

Absorption system hot and cold water supply apparatus

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Ota, Japan

Hisao Honda