JPS6111575A - Heat pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Applications] The present invention relates to a heat pump capable of effectively utilizing energy.

[Conventional technology]

Conventionally, factory waste heat of around 80°C was absorbed and discarded using refrigerators. However, this was not favorable from the viewpoint of effective energy use.

[Problems that the invention attempts to solve]

The present invention utilizes factory waste heat of approximately 80° C. to regenerate heat of a higher temperature than the waste heat, thereby making effective use of energy.

[Failure to solve the problem]

The present invention includes an NH3 generator that heats a liquid ammonia compound using a waste heat source to generate NH3 gas, a compressor that pressurizes the NH3 gas generated by the NH3 generator, and a compressor that pressurizes the NH3 gas compressed by the compressor. Cool and condense to liquefy NH3
an NH3 condenser that heats and evaporates liquefied NH3 using a waste heat source; a compressor that pressurizes the NH3 gas evaporated by the NH3 evaporator; and an NH3 gas compressed by the compressor. The NH3 gas is generated in the NH3 generator, and the salt is absorbed into the liquid ammonia compound containing a high concentration of salt, thereby generating heat at a higher temperature than the waste heat.

[For production]

Therefore, in the present invention, the liquid ammonia compound is heated in the NI]3 generator to generate NI3 gas, and the Nl-1
3 gas is pressurized by a compressor and sent to the Nll3 condenser,
The liquefied N113 is cooled and condensed in the Nll3 condenser and becomes liquefied N■-■, and the liquefied N113 is heated and evaporated in the NII3 evaporator to become Nll gas, and the N113 gas is pressurized and sent to the medium temperature generator. On the other hand, the N143 generator generates NH
The liquid ammonia compound with a high salt concentration resulting from the generation of 3 is also sent to the medium temperature generator, where the NII gas is absorbed by the liquid ammonia compound to generate heat at a higher temperature than the waste heat source.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to accompanying drawings.

FIG. 1 shows an embodiment of the present invention, in which (1) is NII, /
Liquid ammonia compounds with a high salt ratio (7I) (e.g. N
a8CN-nNH3, NIJ4N03. nN■■3 etc.)
(2) is a pump, (3) is a high NH3 concentration tank capable of storing N NF designed to generate H3 gas
I3 generator (5) is the N generated by NH3 generator (3)
A compressor that pressurizes H3 gas, (6) is a Nll3 condenser that cools and condenses the NI-13 gas pressurized by the compressor (5) with cooling water (force), and (8) is an NH3 condenser (6 )
(9) is a pump, (10) is a liquid ammonium tank that stores liquefied Nll3 (liquid ammonium) condensed in
) heating and evaporating Nl-13 evaporator, (12)
is a compressor that pressurizes the NI-(3 gas) evaporated by the 3 evaporator (10), (131 is the NH3 generator (3) that pressurizes the NI gas
- A low NH3 concentration tank in which I3 gas is generated and can store the liquid ammonia compound with a low NII3/salt ratio, (14) is the pump, (15) is the compressor (12
) is absorbed into the liquid ammonia compound fed by the pump (14) from the low, NH3 concentration tank (I3) to generate heat in the medium (I6).
) is a medium-temperature generator that recovers medium-temperature heat.

Next, the operation of the present invention will be explained with reference to FIG. 2.

The high Nll3 concentration tank (1) stores a liquid ammonia compound, for example, Na5CNnNH, where N H3 / Nα5CN = about 4.5. Therefore, the Na
5CN-nNII is sent from the high Nll3 concentration tank (1) to the NJI3 generator (3) by the pump (2), and
It is heated by the process coolant (4) having a temperature of about 80° C. in the H3 generator (3), and NII gas is generated (points 0 to b in FIG. 2). The temperature of the process coolant discharged from the N■■3 generator (3) reaches approximately 45°C.

The N)I3 gas generated in the NH3 generator (3) is transferred to the compressor (
5), it is pressurized from about 4.2atα to 16ata 4 and sent to the NH3 condenser (6), and the N113 condenser (6)
Cooling water with a temperature of approximately 30°C (cooled by force, condensed, turned into liquefied NH3, stored in the ammonium tank (8), and stored heat (point 6 in Figure 2). NH9 condenser (6) The temperature of the cooling water discharged from ) is approximately 35°C.

The liquefied NI3 in the liquid ammonium tank (8) is sent to the NH3 evaporator (00) by the pump (9), and the NH3 evaporator (10)
It is heated by the process cooling medium 01) whose temperature is approximately 80° C., and evaporates to become NH3 gas (point 6 in Fig. 2).

The temperature of the process coolant discharged from the NH3 evaporator (10) is approximately 45°C.

The NH3 gas evaporated in the NH3 evaporator 00) is transferred to the compressor 02.
) is pressurized from about 16αtα to 30αta and sent to the medium temperature generator Q5). On the other hand, the NH3 generator (3)
Na5CN-flNH3 from which a portion of H3 has been evaporated becomes approximately NH3/N a S CN = 2.5, is stored in a low NH3 concentration tank 03), and is sent to a medium temperature generator by a pump 04). Then, a medium temperature generator (1
, 5), Na5CN-rLNH3 with low Nl-13 concentration
NH3 gas is absorbed by the process coolant (4Hn), generating heat at a higher temperature than the process coolant (4Hn) (point C → point d in Figure 2). For this reason, the medium 06) supplied at about 100° C. is heated to about 140° C. by the intermediate temperature generator (15), and sent to the process to perform work. Na 5CN-%NH3 which absorbed NH and gas in medium temperature generator α(g) is NH3/Na8C
The potash is returned to the high NH3 concentration tank (1) at N=4.5. Also NH3 generator (3), Nll3 evaporator (10)
The process coolants (4) and (11) from which heat is recovered are cooled to a temperature of about 45° C., so they can be used, for example, as a cooler for a refrigerator.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

〔Effect of the invention〕

According to the heat pump of the present invention, all of the factory waste heat can be effectively utilized, so it can have an excellent effect of contributing to energy saving.

4. Brief explanation of the drawings Fig. 1 is an explanatory diagram of the heat pump of the present invention, and Fig. 2 is an explanatory diagram of the heat pump of the present invention.
It is a steam 11E diagram of I-1.

In the figure, (1) is a high Nll, concentration tank, and (3) is N1-1.
73 generator, (5) is a compressor, (6) is N11. condenser, (8) is a low liquid tank, (10) tlj, NT-1, evaporator, (12) is a compressor, (13) is a low N l-13 concentration tank, (15) (I'li medium temperature Shows the generator.

Claims (1)

[Claims] 1) Heat the liquid ammonia compound using a waste heat source and
An NH_3 generator that generates H_3 gas, and the NH_3
A compressor that pressurizes the NH_3 gas generated by the generator, an NH_3 condenser that cools and condenses the NH_3 gas compressed by the compressor into liquefied NH_3, and heats and evaporates the liquefied NH_3 using a waste heat source. NH_3 evaporator and the N
A compressor pressurizes the NH_3 gas evaporated by the H_3 evaporator, and the NH_3 gas compressed by the compressor is absorbed into the liquid ammonia compound in which the NH_3 gas is generated by the NH_3 generator and has a high concentration of salt, and is then disposed of. A heat pump characterized by being equipped with a medium temperature generator that generates heat at a higher temperature than heat.