JPS58166673A - Temperature-humidity exchanger of fuel cell - Google Patents

Abstract

PURPOSE:To decrease heat loss and simplify an apparatus by conducting heat exchange and humidity exchange at the same time by passing an air supply system and an air exhaust system of fuel cell main body through one temperature-humidity exchanger. CONSTITUTION:Supply air to a fuel cell main body 6 which generate electric power by reacting air and hydrogen rich gas is passed into a temperature-himidity exchanger 12 after controlling the flow rate with flow rate control systems 1, 2, and 3, and supplied to an air electrode after conducting heat exchange and humidity exchange with air converted to high humidity and high temperature by reaction. Pressure is controlled to specified with pressure control systems 7, 8, and 9 on the outlet side of the cell main body 6. After reacting with air, air is passed again into the temperature-humidity exchanger 12 to conduct heat exchange and humidity exchange with air of low temperature-low humidity, then exhausted. Therefore, because, by one heat exchange, humidity exchange is performed at the same time, heat loss is decreased and an apparatus is simplified.

Description

[Detailed Description of the Invention] This invention provides temperature and humidity exchange f[V
It is related to C.

Figure j11 is a system diagram of a conventional fuel cell air system. In Figure 0, (1) is the flow rate sensor, (2) is the flow rate-node needle,
(3) is the flow rate tS valve, (41, tMI is the heat exchanger, (&
), (The river is drained, (6) is the main body of the fuel cell that generates electricity by reacting air with water-rich gas, (7)
) is the pressure sensor, (8J is the pressure m indicator, (9) is the pressure m
31 valves are shown.

Next, the operation will be explained. The fuel cell power generation system is
Natural gas is used as a raw material, hydrogen-rich gas is generated in a fuel reformer, and acid IA in the air is used as an oxidant to react in a battery, and the resulting DC output is exchanged with an inverter.
This is to convert it to 1E.

At that time, 9! After the air is compressed to external pressure by a compressor, the flow rate control system (l;.

(Illusion, the flow rate is controlled in (3) 1IIlt! 5, humidified by steam, heated through the heat exchanger (41), and adjusted to the flow rate, temperature, and g1 degree appropriate for the reaction. After that, the fuel cell body ( 6). At this time, the separated contained moisture is discharged from the drain (Fl).

The pressure is controlled by the pressure control system T71, (8J, [91) installed on the outlet side of the fuel cell main body (6). After the zero reaction, the air leaving the air electrode becomes high temperature and high humidity, and the PL The air is cooled by a heat exchanger m!IaQ and released into the atmosphere.At this time, the separated moisture contained in the air is discharged from a drain (11).

Conventional equipment is configured as described above, so heat exchange has to be performed twice, resulting in large heat losses, and the system is complicated, such as having to roughly drain the drain [5] and provide a river. The drawback was that it was complicated.

This invention reduces heat loss during heat exchange by performing heat exchange only once and performing 3 simultaneous VC humidity exchanges.
,! A fuel that can simplify Hf! The purpose is to provide a pond temperature/humidity exchange device.

Hereinafter, one embodiment of this invention will be described as IxJi! In figure 0, which will be explained based on the figure, (11 is ill place seven, (2)
is the accented miima needle, (3) Ha is the am-joint, (6) is the fuel cell body, (71 is the pressure sensor, (8) is the pressure sub-node,
(9) indicates the pressure @ section, and α odor indicates the af-humidity exchanger.

Next, the operation will be explained. The supply air is controlled by the i quantity control system [1
1. Perform the fLii control according to (2) *k3).

Thereafter, the air passes through the at-knee humidity exchanger U, undergoes heat and humidity exchange with air that has become humid and high temperature due to reactions within the battery, and enters the air electrode of the fuel cell body (6). In addition, the pressure is +71 in the pressure control system on the outlet side of the fuel cell main body (6),
(8J.

(9) controls the pressure to a predetermined value. After reacting with the fuel, the air passes through the temperature/humidity exchanger α2), exchanges heat with low-temperature, low-humidity summer air, and is then exhausted. In addition, 11
When the j1 pond is activated, the supply air is humidified from the outside before entering the air electrode.

As described above, in this invention, the heat exchange m is performed only once and the humidity is exchanged at the same time, so that the heat loss during the heat exchange can be reduced, and the simplification of the apparatus has the effect of reducing redness.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing a conventional temperature/humidity exchange device for a fuel cell, and FIG. 2 is a system diagram showing a temperature/humidity exchange device for a conventional fuel cell.
It is a system diagram showing jlK-4 degree weather protection. In the figure, (6) is the fuel cell body, and U is the temperature/humidity exchanger. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Shin Kuzuno - 5! ″ 310- Stable Aji-Tochi

Claims (1)

[Claims] Temperature/atJI of a fuel cell characterized in that the air supply system that supplies air to the main body of the fuel cell 1 and the air exhaust system are passed through one temperature/temperature exchanger so that heat exchange and humidity exchange are performed simultaneously. ! Exchange device.