JPH03233267A - Absorption type water cooler/heater - Google Patents

Abstract

PURPOSE:To increase a temperature of hot water while being fed by a supplying solution adjusting mechanism of a small-sized low temperature regenerator by a method wherein a temperature of hot water is detected and a supplied volume of solution for the low temperature regenerator is correspondingly controlled. CONSTITUTION:A hot water temperature is detected and an amount of liquid to be supplied to a low temperature regenerator 10 is correspondingly controlled. As an amount of supplied solution for the low temperature regenerator 10 is reduced, a heat exchanging medium in the low temperature regenerator 10 is reduced, so that a heat exchanging operation at the low temperature regenerator 10 is prohibited. With such an arrangement, a pressure saturation temperature of coolant vapor in the high temperature regenerator acting as a heat exchanging heat source for the low temperature regenerator 10 is increased. In turn, since the heating source for the supplied hot water is a coolant vapor, if the pressure saturation temperature of the high temperature regenerator 9 is increased, high hot water temperature can be attained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an absorption type water chiller/heater, and particularly relates to an absorption type chiller/heater that can simultaneously supply cold water for cooling and hot water for heating. .

[Conventional technology]

In absorption type cold/hot water machines that simultaneously supply cold and hot water, a drop in hot water temperature during co-supply currently exists in distribution machines, which is an undesirable problem from the standpoint of heat source quality. As a conventional technique for solving this problem, a method is known in which the amount of cooling water flowing through the condenser is controlled.

[Problem to be solved by the invention]

Conventional technology requires a large control valve to control cooling water, which inevitably increases costs.

An object of the present invention is to provide a cold/hot water machine that has the same functions as conventional ones using a compact control device.

[Means to solve the problem]

The above object is achieved by providing a function to control the amount of solution supplied to the low temperature regenerator.

[Effect]

When the low temperature regenerator feed solution amount is reduced, the heat exchange medium in the low temperature regenerator is reduced, thereby inhibiting heat exchange in the low temperature regenerator. This increases the pressure saturation temperature of the refrigerant vapor in the high temperature regenerator, which is the heat exchange heat source for the low temperature regenerator.

On the other hand, since the heat source of the co-supplied hot water is the refrigerant vapor of the high-temperature regenerator, if the pressure saturation temperature of the high-temperature regenerator increases, a high hot water temperature can be obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

First, the cycle of an absorption type cold/hot water machine that simultaneously supplies cold and hot water will be explained with reference to FIG.

The inside of the evaporator 1 is maintained at about 1/100th atmospheric pressure, and the refrigerant 2 (water) is pumped through the heat transfer tube 4 by the refrigerant pump 3.
It is sprayed on top, absorbs the heat of the cold water and evaporates, creating a cooling effect. The evaporated refrigerant vapor is maintained at a low pressure by cooling water and flows into the absorber 5 where it is absorbed by an aqueous lithium bromide solution sprayed onto the absorber heat exchanger tubes 6, and the aqueous lithium bromide solution is diluted. This diluted solution is sent to the high temperature regenerator 9 and the rest to the low temperature regenerator 10 through the heat exchanger 8 by the solution pump 7. In the high temperature regenerator 9, it is directly heated by heat #111. separated into vapor and concentrated solution. Further, in the low-temperature regenerator 10, the diluted solution is heated by the steam generated in the high-temperature regenerator 9 and separated into steam and concentrated solution. The solution thus concentrated is again sprayed into the absorber 5 via the heat exchanger 8.

The solution is heated in the low temperature regenerator 10, and the condensed condensate is led to the condenser 12.

Further, the steam generated in the low temperature regenerator 10 is condensed in the condenser 12. The condensed refrigerant thus produced is led to the evaporator 1, where it is sprayed and goes around the cycle.

Further, the steam generated in the high-temperature regenerator 9 is guided to the water heater 16, where it heats the hot water flowing through the water heater heat exchanger tube 17, and the condensed drain is guided to the high-temperature regenerator 9 to complete the cycle.

Here, the temperature of the hot water depends on the pressure saturation temperature of the steam generated in the high-temperature regenerator 9, but as mentioned above, the steam generated in the high-temperature regenerator 9 also exchanges heat with the low-temperature regenerator 10. Therefore, depending on the flow rate of the solution supplied to the low-temperature regenerator 9, which is the heat exchange partner, and the amount of the direct heat source 11 of the high-temperature regenerator 9 at that time, the pressure saturation temperature of the high-temperature regenerator 9 will no longer rise. Put it away.

Another embodiment of the present invention will be explained with reference to FIG.

Figure 2 shows the low temperature regenerator solution supply piping 2 compared to Figure 1.
Control valve 18. The difference is that a converter 19 is provided. The control valve 18 controls the converter 1 by a signal of hot water temperature, high temperature regenerator pressure, or high temperature regenerated lead steam temperature.
It is opened and closed via 9.

When the hot water temperature or the high temperature regenerator steam pressure or temperature decreases, the converter 19 detects this and closes the control valve 18.

As a result, the amount of solution supplied to the low-temperature regenerator 1o decreases, and as a result, the refrigerant vapor generated in the high-temperature regenerator 9
Since it becomes difficult to condense in the low temperature regenerator 10, the high temperature regenerator 9
pressure begins to rise.

When the pressure of the high temperature regenerator 9 increases, its saturation temperature also increases, and as a result, the temperature of the hot water that exchanges heat with it increases.

〔Effect of the invention〕

According to the present invention, the rise in hot water temperature during co-feeding can be controlled by the supply solution adjustment mechanism of the small-sized low-temperature regenerator.

[Brief explanation of drawings]

FIG. 1 is a system diagram of one embodiment of the present invention, and FIG. 2 is a system diagram of another embodiment of the invention. 1... Evaporator, 3... Refrigerant pump, 5... Absorber, 7... Solution pump. house diagram

Claims (1)

[Claims] 1. Evaporators, absorbers, high and low temperature regenerators, heat exchangers,
In a cold/hot water simultaneous co-supply type absorption chiller/heater that includes a water heater, a solution pump, a refrigerant pump, and a piping system that operatively connects these, the temperature of the hot water is detected and the solution supplied to the low temperature regenerator is detected in accordance with the detected hot water temperature. An absorption type water chiller/heater that is characterized by volume control.