JPH0121433B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an absorption type chilled/hot water device.

[Conventional technology]

Conventionally, octyl alcohol separated in an octyl separator was returned to the absorber. In addition, related items of this type include, for example,
No. 1543 is mentioned.

[Problem that the invention seeks to solve]

Since the octyl separator is connected downstream of the condenser, its internal pressure is approximately equal to that of the condenser. Therefore, when octyl alcohol is returned to the absorber on the low pressure side, it is necessary to provide U-seal piping or the like to prevent blow-through, which poses difficulties in terms of space and cost.

An object of the present invention is to provide an absorption-type chilled/hot water system that does not require any special equipment such as U-seal piping, and in which separated octyl alcohol is sent to an absorber without problems such as outgassing.

[Means for solving problems]

The above purpose is to install a separation device in the refrigerant return piping that separates the octyl alcohol vaporized in the regenerator from the refrigerant after liquefying it in the condenser, and the octyl return piping returns the separated octyl alcohol to the concentrated liquid side of the low-temperature regenerator. This is achieved by providing a concentrated solution return line adjacent to the low temperature regenerator between the low temperature regenerator and the heat exchanger.

[Effect]

The separated octyl alcohol (heat transfer performance enhancer) is combined with a concentrated solution of almost equal liquid pressure in the refrigerant return pipe adjacent to the low temperature regenerator between the low temperature regenerator and the heat exchanger. Octyl alcohol can be returned to the absorber without the gas blow-by phenomenon.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. The figure shows the cycle of an absorption type water chiller/heater. The refrigerant sprayed into the evaporator 2 by the refrigerant pump 1 absorbs heat from the cold water 3 under low pressure and evaporates itself. This achieves the freezing effect. The evaporated refrigerant is led to the absorber 4, where it is absorbed by a lithium bromide solution (hereinafter referred to as solution), and the solution becomes a dilute solution. The dilute solution is pressurized by a solution pump 5, and part of it passes through a heat exchanger 8 to a high-temperature regenerator 6, and a part of it passes through a low-temperature regenerator 7. 4, and the remainder is sent to a low temperature regenerator 7 via a heat exchanger 8. The solution is heated by a heat source 9 in a high temperature regenerator 6, and water is evaporated. The concentrated solution is led to the absorber 4 as described above. The generated steam is guided to the inside of the tube of the low-temperature regenerator 7, heats and concentrates the solution outside the tube, and the concentrated solution is guided to the absorber 4. The refrigerant vapor and drain generated at that time are guided to the condenser 10, where they are condensed by cooling water 11, and the generated refrigerant is guided to the evaporator 2 due to the pressure difference, and is sprayed into the evaporator 2 by the refrigerant pump 1. Ru. This completes the cycle. Here, octyl alcohol is generally added to improve the heat transfer performance of the heat transfer tubes in the absorber 4. This octyl alcohol is sent to the regenerators 6 and 7 together with the diluted solution, where it is evaporated, and the condenser 10
However, it is necessary to separate this from the refrigerant and return it to the absorber 4. A separator 12 for this purpose is installed in the middle of a refrigerant return pipe 14 from the condenser 10 to the evaporator 2. The separated octyl alcohol passes through the octyl return pipe 13, joins the concentrated solution return pipe 15 of the low temperature regenerator 7, and is further dispersed and returned to the absorber 4 via the heat exchanger 8.

〔Effect of the invention〕

According to the present invention, octyl alcohol is combined with the solution flowing out from the low temperature regenerator at approximately the same pressure as the condenser, so octyl alcohol can be returned to the absorber without providing anything special.

[Brief explanation of drawings]

The figure is a system diagram of an embodiment of the present invention. 7... Low temperature regenerator, 10... Condenser, 12... Octyl separator, 13... Octyl return pipe, 14... Refrigerant return pipe, 15... Concentrated solution return pipe.

Claims (1)

[Claims] 1. In an absorption chiller/hot water system consisting of an absorber, evaporator, condenser, regenerator, and heat exchanger, a separation device is installed to liquefy the octyl alcohol vaporized in the regenerator in the condenser and then separate it from the refrigerant. The octyl return piping is installed in the refrigerant return piping and returns the separated octyl alcohol to the concentrated solution side of the low-temperature regenerator, and is installed in the concentrated solution return piping close to the low-temperature regenerator between the low-temperature regenerator and the heat exchanger. Absorption type chilled/heated water equipment.