JPH03175136A - Device for utilizing exhaust heat of internal combustion engine - Google Patents
Device for utilizing exhaust heat of internal combustion engineInfo
- Publication number
- JPH03175136A JPH03175136A JP1314281A JP31428189A JPH03175136A JP H03175136 A JPH03175136 A JP H03175136A JP 1314281 A JP1314281 A JP 1314281A JP 31428189 A JP31428189 A JP 31428189A JP H03175136 A JPH03175136 A JP H03175136A
- Authority
- JP
- Japan
- Prior art keywords
- water
- heat
- heat exchanger
- hot spring
- piping system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 189
- 239000000498 cooling water Substances 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 14
- 238000005086 pumping Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 239000008239 natural water Substances 0.000 abstract description 5
- 239000002349 well water Substances 0.000 abstract 1
- 235000020681 well water Nutrition 0.000 abstract 1
- 238000005338 heat storage Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は温泉設備において使用される内燃機関の排熱利
用装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for utilizing exhaust heat of an internal combustion engine used in hot spring facilities.
（従来の技術）
従来、発電機、冷媒圧縮機、空気圧縮機などを駆動する
内燃機関の排熱を水を貯留する熱交換器内に蓄熱し、こ
の熱を給湯用の熱源として利用したり、或いは空調等の
交換熱として利用するいわゆるコ・ジェネレーションシ
ステムが知られている。(Conventional technology) Conventionally, waste heat from an internal combustion engine that drives a generator, refrigerant compressor, air compressor, etc. is stored in a heat exchanger that stores water, and this heat is used as a heat source for hot water supply. Alternatively, so-called co-generation systems are known, which are used as exchange heat for air conditioning and the like.
一方、温泉設備、特に都市部の平地に設置されるいわゆ
る深層地熱水型温泉設備における経済的な井戸深さ（深
さ１０（１０ｍ〜１５００ｍ）においては、一般にその
温泉水温度が３５６Ｃ〜４５℃となっている。On the other hand, in hot spring facilities, especially so-called deep geothermal water type hot spring facilities installed in flat areas in urban areas, at economical well depths (depth 10 (10 m to 1,500 m)), the temperature of the hot spring water is generally 356 C to 45 C. It is ℃.
（発明が解決しようとする課題）
しかしながら、前述のコ・ジェネレーションシステムで
は、内燃機関の排熱が熱負荷をオーバーする場合が多く
、また、熱交換器の容量も経済的な限界があるため、こ
のオーバーした熱が投棄される事態が多々あった。特に
夏期においては給湯等に使用される熱量が少ないため、
発電量の割には熱の使用量が少なくアンバランスとなっ
ている。。(Problems to be Solved by the Invention) However, in the above-mentioned cogeneration system, the exhaust heat of the internal combustion engine often exceeds the heat load, and the capacity of the heat exchanger has an economical limit. There were many situations in which this excess heat was thrown away. Especially in the summer, because the amount of heat used for hot water heating is small,
The amount of heat used is small compared to the amount of power generated, resulting in an imbalance. .
一方、前述の温泉設備においては、その温泉水温度を６
０６Ｃ〜６５℃まで高めるため、ボイラーにより追い焚
き加熱を行なうことを要していた。On the other hand, in the hot spring facilities mentioned above, the temperature of the hot spring water is 6
In order to raise the temperature to 0.6 to 65 degrees Celsius, it was necessary to perform reheating using a boiler.
また、温泉水を汲上げるためのポンプ及び給湯用のポン
プを常時稼働しなければならず、その電力消費量も多大
なものとなっている。Furthermore, pumps for pumping up hot spring water and pumps for hot water supply must be operated at all times, and their power consumption is also large.
このように、コ・ジェネレーションシステムにおいては
、電力負荷と熱負荷のそれぞれの発生に時間的なずれが
あり、排熱を完全に利用するには大容量かつ高性能の熱
交換器が要求されるが、この熱交換器の費用が高く、か
つ、その容量に限界があった。他方、温泉設備において
は電力需要があり、加温を必要としていること、また、
温泉井戸には膨大な蓄熱容量がある。従って、この両者
を組合せたものが最も熱効率の良い内燃機関の排熱利用
装置となる。In this way, in cogeneration systems, there is a time lag between the generation of electric power load and heat load, and large-capacity, high-performance heat exchangers are required to fully utilize waste heat. However, this heat exchanger was expensive and had a limited capacity. On the other hand, hot spring facilities require electricity and require heating.
Hot spring wells have a huge heat storage capacity. Therefore, a combination of the two provides the most thermally efficient exhaust heat utilization device for an internal combustion engine.
このような内燃機関の排熱利用装置を実現するため、第
２図に示すものを考えることができる。In order to realize such an apparatus for utilizing exhaust heat of an internal combustion engine, the system shown in FIG. 2 can be considered.
即ち、図中、２０は内燃機関２０ａ及び内燃機関２０ａ
により駆動する発電機２０ｂを設置したコ・ジェネレー
ションユニット、２１は内燃機関２０ａの冷却水がポン
プ２１ａにて循環する冷却水配管系、２２は内燃機関２
０ａの排気を排出する排気配管系である。２３はコ・ジ
ェネレーションユニット２０の排熱を蓄熱する熱交換器
で、各配管系２１．２２の各熱交換部２１ｂ、２２ａを
配置している。２４は温泉井戸で、熱交換器２３と揚水
配管系２５及び注水配管系２６により連結し、揚水配管
系２５の水中ポンプ２５ａにて温泉水を熱交換器２３内
に汲み上げ、また、注水配管系２６の電磁弁２６ａを開
とすることにより、熱交換器２３内の温泉水を温泉井戸
２４内に戻すようにしている。また、熱交換器２３には
給湯配管系２７が連通して給湯が行なわれ、温泉井戸２
４内には電磁弁２８ａを有し市水を給水する給水配管系
２８が連通している。That is, in the figure, 20 indicates an internal combustion engine 20a and an internal combustion engine 20a.
21 is a cooling water piping system in which the cooling water of the internal combustion engine 20a is circulated by a pump 21a, and 22 is a cogeneration unit installed with a generator 20b driven by the internal combustion engine 2.
This is an exhaust piping system that discharges the exhaust gas of 0a. 23 is a heat exchanger that stores the exhaust heat of the co-generation unit 20, and each heat exchange section 21b, 22a of each piping system 21.22 is arranged. Reference numeral 24 denotes a hot spring well, which is connected to the heat exchanger 23 by a pumping piping system 25 and a water injection piping system 26, and a submersible pump 25a of the pumping piping system 25 pumps hot spring water into the heat exchanger 23, and a water injection piping system. By opening the solenoid valve 26a of 26, the hot spring water in the heat exchanger 23 is returned to the hot spring well 24. Further, a hot water supply piping system 27 is connected to the heat exchanger 23 to supply hot water to the hot spring well 2.
A water supply piping system 28 having a solenoid valve 28a and supplying city water communicates with the interior of the water supply pipe 4.
各電磁弁２６ａ、２８ａは冷却水配管系２１の熱交換部
２１ｂを通過した水の温度を検知する温度センサ２９に
より制御される。即ち、熱交換器２３内の温泉水が各熱
交換部２１ｂ、２２ａにより加熱され、冷却水温度が内
燃機関２０ｇの冷却に不適当な高温度となったときは、
各電磁弁２６ａ、２８ａを開とする。これにより、高温
となった熱交換器２３内の温泉水が注水配管系２６を介
して温泉井戸２４内に戻り、温泉井戸２４の自然水面上
に印加水頭圧がかかり温泉井戸２４内及び温泉の滞水層
２４ｂに逆流して貯留される。他方、給水配管系２８の
水にて理められた温泉井戸２４の温泉水が水中ポンプ２
５ａにより熱交換器２３内に供給される。Each electromagnetic valve 26a, 28a is controlled by a temperature sensor 29 that detects the temperature of water that has passed through the heat exchange section 21b of the cooling water piping system 21. That is, when the hot spring water in the heat exchanger 23 is heated by the heat exchange parts 21b and 22a and the cooling water temperature reaches a high temperature inappropriate for cooling the internal combustion engine 20g,
Let each solenoid valve 26a, 28a be opened. As a result, the hot spring water in the heat exchanger 23 that has reached a high temperature returns to the hot spring well 24 via the water injection piping system 26, and water head pressure is applied above the natural water surface of the hot spring well 24, causing the inside of the hot spring well 24 and the hot spring to flow. The water flows back into the water retention layer 24b and is stored therein. On the other hand, the hot spring water from the hot spring well 24, which is treated with water from the water supply piping system 28, is supplied to the submersible pump 2.
5a into the heat exchanger 23.
このように、熱交換器２３の蓄熱量がオーバーしたとき
は、この蓄熱が温泉井戸２４内に貯留されるとともに、
熱交換器２３内の温泉水温度が所定温度以下に保持され
、内燃機関２０ａの冷却を行なっている。In this way, when the heat storage amount of the heat exchanger 23 exceeds, this heat storage is stored in the hot spring well 24, and
The temperature of the hot spring water in the heat exchanger 23 is maintained below a predetermined temperature to cool the internal combustion engine 20a.
しかしながら、このように、コｅジェネレーションシス
テム２０の熱交換器２３内にこの温泉水を循環させると
きは、温泉水に含有する塩分、硫酸根、カルシウム分等
によって熱交換器２３はもとより各熱交換部２１ｂ、２
２ａが破損するという問題点を有している。However, when circulating this hot spring water in the heat exchanger 23 of the co-egeneration system 20, the heat exchanger 23 and each heat exchanger are affected by the salt, sulfate, calcium, etc. contained in the hot spring water. Part 21b, 2
There is a problem that 2a is damaged.
本発明の目的は、熱交換器及び各熱交換部を温泉水によ
り破損することなく、かつ、コ・ジェネレーションシス
テムの余剰排熱を温泉井戸に蓄熱し、更には温泉水を加
温することができる内燃機関の排熱利用装置を提供する
ことにある。The purpose of the present invention is to prevent the heat exchanger and each heat exchange part from being damaged by hot spring water, store excess waste heat from the cogeneration system in the hot spring well, and further heat the hot spring water. An object of the present invention is to provide an exhaust heat utilization device for an internal combustion engine that can be used.
（課題を解決するための手段）
本発明は前記課題を解決するため、請求項（１）の発明
は、内燃機関の排気を排出するとともに一部に排気中の
熱を放出する排気用熱交換部を有する排気配管系と、内
燃機関の冷却水を循環するとともに一部に冷却水中の熱
を放出する冷却水用貼交換部を有する冷却水配管系と、
前記排気用熱交換部及び前記冷却水用熱交換部と熱的に
接触し貯留した水が該各熱交換部により加熱される熱交
換器と、温泉井戸の温泉水を汲上げる揚水配管系と、前
記熱交換器内に市水等の前記温泉水以外の水を給送する
給水配管系と、前記冷却水用熱交換部を通過した冷却水
が所定温度以上となったとき前記熱交換器内の水を前記
温泉井戸内に注入する注水配管系とを備えたことを特徴
とする
請求項（２）の発明は、請求項（１）の給水用配管系に
ビルなどの建物の冷房装置に係る冷却回路の排熱と熱交
換する熱交換器を設けたことを特徴とする。(Means for Solving the Problems) In order to solve the above problems, the invention of claim (1) provides an exhaust heat exchanger that discharges the exhaust gas of an internal combustion engine and partially releases the heat in the exhaust gas. an exhaust piping system having a part, and a cooling water piping system having a part for circulating cooling water of the internal combustion engine and part for discharging heat in the cooling water;
a heat exchanger in which water that is in thermal contact with the exhaust heat exchange section and the cooling water heat exchange section and is stored is heated by the respective heat exchange sections; and a pumping piping system that pumps up hot spring water from a hot spring well. , a water supply piping system that supplies water other than the hot spring water, such as city water, into the heat exchanger; and a water supply piping system that supplies water other than the hot spring water, such as city water, into the heat exchanger, and when the cooling water that has passed through the cooling water heat exchange section reaches a predetermined temperature or higher, the heat exchanger The invention of claim (2) is characterized in that the invention further comprises a water injection piping system for injecting water into the hot spring well into the hot spring well. A heat exchanger is provided for exchanging heat with the exhaust heat of the cooling circuit.
（作 用）
請求項（１）の発明によれば、給水配管系により熱交換
器内に市水が給水され、この水が内燃機関の排熱により
加熱される。このとき、内燃機関を冷却する冷却水が冷
却水許容温度以上となったときは注水配管系により熱交
換器内の高温水が温泉井戸に注入される。これにより、
温泉井戸の自然水面上に印加水頭圧がかかり、温泉井戸
内及び温泉井戸の下方の滞水層に逆流して貯留される。(Function) According to the invention of claim (1), city water is supplied into the heat exchanger by the water supply piping system, and this water is heated by the exhaust heat of the internal combustion engine. At this time, when the cooling water that cools the internal combustion engine reaches a cooling water permissible temperature or higher, high-temperature water in the heat exchanger is injected into the hot spring well by the water injection piping system. This results in
An applied head pressure is applied above the natural water surface of the hot spring well, and the water flows back into the hot spring well and into the aquifer layer below the hot spring well and is stored.
そして揚水配管系により温泉水とともに給湯水等として
供給される。The water is then supplied as hot water, etc. along with the hot spring water through the pumping piping system.
請求項（２）の発明によれば、建物などの冷房装置の冷
却回路の排熱により給水配管系を通る水が加熱されるた
め、予熱された水が熱交換器内に流入する。これにより
、冷却回路の排熱回収が行なわれ、装置全体の省エネル
ギーを実現できる。According to the invention of claim (2), since the water passing through the water supply piping system is heated by the exhaust heat of the cooling circuit of the cooling device of the building, etc., the preheated water flows into the heat exchanger. As a result, exhaust heat from the cooling circuit is recovered, and energy saving for the entire device can be realized.
（実施例）
第１図、第３図及び第４図は本発明の一実施例で、第１
図は内燃機関の排熱利用装置の水回路を示す概略図であ
る。図中、１はコ・ジェネレーションユニット（以下、
コ・ジエネユニットという）、２はコ・ジエネユニット
１の冷却水配管系、３はコ・ジエネユニット１の排気配
管系、４はコ・ジエネユニット１の排熱を蓄熱する加圧
タンク型の熱交換器、５は熱交換器４内に市水を供給す
る給水配管系、６はビルなどの建物Ａの冷房装置の冷却
回路である。７は温泉井戸、８は温泉井戸７から温泉水
を汲上げる揚水配管系、９はこの汲上げられた温泉水を
貯留する貯湯タンク、１０は貯湯タンク９内の温泉水を
加熱する熱交換水配管系、１１は熱交換器４及び貯湯タ
ンク９の給湯配管系、１２は熱交換器４及び貯湯タンク
９内の水を温泉井戸７に注水する注水配管系である。(Example) Figures 1, 3, and 4 show an example of the present invention.
The figure is a schematic diagram showing a water circuit of an exhaust heat utilization device for an internal combustion engine. In the figure, 1 is a co-generation unit (hereinafter referred to as
2 is the cooling water piping system of the co-generating unit 1, 3 is the exhaust piping system of the co-generating unit 1, 4 is a pressurized tank type heat exchanger that stores the exhaust heat of the co-generating unit 1, 5 is a water supply piping system that supplies city water into the heat exchanger 4, and 6 is a cooling circuit of a cooling device of building A such as a building. 7 is a hot spring well, 8 is a pumping piping system that pumps hot spring water from the hot spring well 7, 9 is a hot water storage tank that stores the pumped hot spring water, and 10 is a heat exchange water that heats the hot spring water in the hot spring water storage tank 9. A piping system 11 is a hot water supply piping system for the heat exchanger 4 and the hot water storage tank 9, and 12 is a water injection piping system for injecting the water in the heat exchanger 4 and the hot water storage tank 9 into the hot spring well 7.
前記コ・ジエネユニット１はその内部に内燃機関１ａと
発電機１ｂを設置しており、この発電機１ｂを内燃機関
１ａにて駆動し発電する。このコ・ジエネユニット１の
冷却水配管系２はその熱交換部２ａを熱交換器４内に配
備し、ポンプ２ｂにより冷却水を熱交換器４内に循環さ
せて内燃機関１ａの冷却を行ない、また、熱交換器４内
の水を加熱している。また、コ◆ジェネユニット１の排
気配管系３はその熱交換部３ａを熱交換器４内に貫通さ
せ内燃機関１ａの排気熱により熱交換器４内の水を加熱
している。また、この排気配管系３は耐酸性抵抗の大き
な部材で形成されている。尚、４ａは熱交換器４の排水
バルブである。The co-generation unit 1 has an internal combustion engine 1a and a generator 1b installed therein, and the generator 1b is driven by the internal combustion engine 1a to generate electricity. The cooling water piping system 2 of this co-engineering unit 1 has its heat exchange part 2a disposed inside the heat exchanger 4, and the cooling water is circulated inside the heat exchanger 4 by the pump 2b to cool the internal combustion engine 1a. Moreover, the water in the heat exchanger 4 is heated. Further, the exhaust piping system 3 of the co◆generator unit 1 has its heat exchange portion 3a penetrated into the heat exchanger 4, and heats the water in the heat exchanger 4 with the exhaust heat of the internal combustion engine 1a. Further, the exhaust piping system 3 is made of a material having high acid resistance. Note that 4a is a drain valve of the heat exchanger 4.
前記給水配管系５はその先端が熱交換器４内に臨むとと
もに、市水圧により熱交換器４内を加圧しており、熱交
換器４内の水が消費されると、その消費分の市水が供給
される。尚、５ａは給水配管系５の制水弁である。また
、この給水配管系５にはビルなどの建物Ａの冷却回路６
の凝縮器６ａが熱的に接触している。この冷却回路６の
冷媒は凝縮器６ａ−膨脂弁６ｂ−蒸発器６Ｃ−圧縮機６
ｄ−凝縮器６ａと順次循環しており、この凝縮器６ａの
排熱により市水を加熱している。The tip of the water supply piping system 5 faces the inside of the heat exchanger 4, and the inside of the heat exchanger 4 is pressurized by city water pressure, so that when the water in the heat exchanger 4 is consumed, the amount of water consumed is returned to the city. Water is provided. Note that 5a is a water control valve of the water supply piping system 5. The water supply piping system 5 also includes a cooling circuit 6 for a building A such as a building.
The condenser 6a is in thermal contact with the condenser 6a. The refrigerant in this cooling circuit 6 is a condenser 6a, a fat expansion valve 6b, an evaporator 6C, and a compressor 6.
It circulates in sequence with the d-condenser 6a, and city water is heated by the exhaust heat of this condenser 6a.
前記温泉井戸７は１０００ｍ −１５００ｍの深さに掘
られており、その下端が温泉水が滞留する滞水層７ａに
達している。また、この温泉井戸７内には揚水配管系８
が配備され、水中ポンプ８ａで温泉水が貯湯タンク９内
に汲上げられる。この貯湯タンク９にはレベルスイッチ
９ａが設置され、貯留タンアク９内の水位が所定レベル
以上となったとき水中ポンプ８ａが停止し、所定量の温
泉水を常時貯留している。また、この貯湯タンク９内に
は熱交換水配管系１０の熱交換部１０ａが配備されてお
り、貯湯タンク９内の温泉水の温度に基づき発停するポ
ンプ１０ｂにて熱交換器４内の水を循環させている。尚
、９ａは貯湯タンク９の排水バルブである。The hot spring well 7 is dug to a depth of 1,000 m to 1,500 m, and its lower end reaches a water reservoir layer 7a in which hot spring water accumulates. In addition, inside this hot spring well 7, there is a pumping piping system 8.
is provided, and hot spring water is pumped into the hot water storage tank 9 by a submersible pump 8a. A level switch 9a is installed in this hot water storage tank 9, and when the water level in the storage tank 9 reaches a predetermined level or higher, the submersible pump 8a stops, and a predetermined amount of hot spring water is always stored. In addition, a heat exchange part 10a of a heat exchange water piping system 10 is installed in this hot water storage tank 9, and a pump 10b that starts and stops based on the temperature of hot spring water in the hot water storage tank 9 is used to control the temperature in the heat exchanger 4. It circulates water. Note that 9a is a drain valve for the hot water storage tank 9.
前記給湯配管系１１は熱交換器４に連通ずる配管１１ａ
と貯湯タンク９に連通ずる配管１１ｂに分岐され、この
分岐された各配管１１ａ、ｌｌｂから湯がポンプ１１Ｃ
で汲上げられる。また、各配管１１ａ、ｌｌｂはミキシ
ングバルブ１１ｄに連結し、熱交換器４の水と貯湯タン
ク９内の温泉水を混合して共通配管１１ｅを介して蛇口
１１ｆに給送される。尚、ｌ１ｇはミキシングバルブｌ
ｉｄ側から熱交換器４例の逆流を防止する逆止弁である
。The hot water supply piping system 11 includes a piping 11a that communicates with the heat exchanger 4.
The branched pipes 11b communicate with the hot water storage tank 9, and hot water flows from the branched pipes 11a and 11b to the pump 11C.
It is pumped up. Further, each of the pipes 11a and llb is connected to a mixing valve 11d, and the water in the heat exchanger 4 and the hot spring water in the hot water storage tank 9 are mixed and fed to the faucet 11f via the common pipe 11e. In addition, l1g is the mixing valve l
This is a check valve that prevents backflow in the four heat exchangers from the ID side.
前記注水配管系１２は分岐された配管１２ａ。The water injection piping system 12 is a branched piping 12a.
］、 ２ ｂとこの各配管１２ａ、１２ｂが連結する共
通配管１２ｃとを有している。この分岐された配管１２
ａは給湯配管系１１の配管１１ａを介して熱交換器４内
に臨み、配管１２ｂは貯湯タンク９内に臨み、更に、共
通配管１２ｃは温泉井戸７内に臨んでいる。また、分岐
された各配管１２ａ。], 2b and a common pipe 12c to which the respective pipes 12a and 12b are connected. This branched piping 12
A faces into the heat exchanger 4 via a pipe 11a of the hot water supply piping system 11, a pipe 12b faces into the hot water storage tank 9, and a common pipe 12c faces into the hot spring well 7. Moreover, each branched pipe 12a.
１２ｂにはそれぞれ各配管１２ａ、１２ｂを開閉する電
磁弁１２ｄ、１２ｅが設けられ、電磁弁１２ｄは冷却水
配管系２で熱交換部２０を通過した水の温度に基づき開
閉制御され、電磁弁１２ｅは貯湯タンク９内の温泉水の
温度に基づき開閉制御される。12b is provided with electromagnetic valves 12d and 12e that open and close the respective piping 12a and 12b, respectively. is controlled to open and close based on the temperature of the hot spring water in the hot water storage tank 9.
第３図はこれらの各電磁弁１２ｄ、１２ｅ及びポンプ１
０ｂの制御回路を示すブロック図である。FIG. 3 shows these solenoid valves 12d, 12e and pump 1.
FIG. 2 is a block diagram showing a control circuit of 0b.
図中、１３はマイクロコンピュータ構成のＣＰＵで、そ
の入力端には内燃機関冷却水の水温を検知する温度セン
サ１４ａと貯湯タンク９内の温泉水の温度を検知する温
度センサ１４ｂが接続している。また、ＣＰＵ１３の出
力側には各駆動回路１５ａ、１５ｂ、１５ｃを介してそ
れぞれ各電磁弁１２ｄ、１２ｅ及びポンプ１０ｂが接続
している。In the figure, 13 is a CPU configured as a microcomputer, and a temperature sensor 14a that detects the temperature of internal combustion engine cooling water and a temperature sensor 14b that detects the temperature of hot spring water in the hot water storage tank 9 are connected to its input terminal. . Furthermore, electromagnetic valves 12d and 12e and a pump 10b are connected to the output side of the CPU 13 via drive circuits 15a, 15b and 15c, respectively.
第４図はＣＰＵ１３による各電磁弁１２ｄ。FIG. 4 shows each solenoid valve 12d controlled by the CPU 13.
１２ｅ、ポンプ１０ｂの駆動制御を示すフローチャート
である。この図面中で、電磁弁１２ｄをＳＶｌ、電磁弁
１２ｅをＳＶ２、温度センサ１４ａの検知温度をＴ１、
温度センサ１４ｂの検知温度をＴ２、ポンプ１０ｂをＰ
と表示する。即ち、冷却水の水温が７５℃以上となった
ときは（Ｓｌ）、電磁弁１２ｄが開となり（Ｓ２）、こ
れにより、熱交換器４内に市水が供給される。また、こ
の市水圧により熱交換器４内の高温水が注水配管系１２
を介して温泉井戸７内に注入される。この高温水の注水
により温泉井戸７内は自然水位より上方の水頭圧がかか
り、この高温水が温泉井戸７内或いは滞水層７ａに逆流
して貯留される。他方、この市水の熱交換器４への供給
により、熱交換器４内の水温が７０°Ｃ以下となったと
きは（Ｓ３）、電磁弁１２ｄが閉となり（Ｓ４） 、高
温水の注水が停止する。12e is a flowchart showing drive control of the pump 10b. In this drawing, the solenoid valve 12d is SVl, the solenoid valve 12e is SV2, and the temperature detected by the temperature sensor 14a is T1.
The temperature detected by the temperature sensor 14b is T2, and the temperature of the pump 10b is P.
is displayed. That is, when the temperature of the cooling water reaches 75° C. or higher (Sl), the solenoid valve 12d is opened (S2), thereby supplying city water into the heat exchanger 4. In addition, this city water pressure causes high temperature water in the heat exchanger 4 to flow into the water injection piping system 12.
The water is injected into the hot spring well 7 through the hot spring well 7. This high-temperature water injection applies a water head pressure above the natural water level in the hot spring well 7, and this high-temperature water flows back into the hot spring well 7 or into the water retention layer 7a and is stored. On the other hand, when the water temperature in the heat exchanger 4 becomes 70°C or lower due to the supply of this city water to the heat exchanger 4 (S3), the solenoid valve 12d is closed (S4) and high temperature water is injected. stops.
このように、熱交換器４内の水温は所定温度範囲（７０
°ＣＡＴ、＜７５°Ｃ）に維持され、内燃機関１ａの冷
却水許容温度、即ち７５℃以」二となることがなく、か
つ、余剰排熱が温泉井戸７等に蓄熱される。In this way, the water temperature in the heat exchanger 4 is within a predetermined temperature range (70
CAT, <75°C), the temperature of the cooling water of the internal combustion engine 1a is maintained at a temperature that does not exceed the permissible temperature of 75°C, and surplus exhaust heat is stored in the hot spring well 7 and the like.
また、貯湯タンク９内の水温が６５℃以」二となったと
きは（Ｓ５）、電磁弁１２ｅを開とするとともに（８６
）、ポンプ１０ｂの駆動を停止する（Ｓ７）。このとき
、貯湯タング９の水位が温泉井戸７の自然水位より高く
なっているから、貯湯タンク９内の温泉水が注水配管系
１２を介して温泉井戸７内に注入され、温泉井戸７或い
は滞水層７ａ内に貯留される。また、ポンプ１０ｂの停
止により貯湯タンク９内の温泉水の加熱も停止している
。Further, when the water temperature in the hot water storage tank 9 becomes 65°C or higher (S5), the solenoid valve 12e is opened (86°C).
), the drive of the pump 10b is stopped (S7). At this time, since the water level in the hot water storage tank 9 is higher than the natural water level in the hot spring well 7, the hot spring water in the hot water storage tank 9 is injected into the hot spring well 7 via the water injection piping system 12, and the hot spring water in the hot spring well 7 or stagnant water is injected into the hot spring well 7 through the water injection piping system 12. It is stored in the water layer 7a. Further, due to the stoppage of the pump 10b, heating of the hot spring water in the hot water storage tank 9 is also stopped.
他方、このよう貯湯タンク９内の注水により貯湯タンク
９内の水位が低下したときは、水中ポンプ８ａの駆動に
より温泉井戸７から温泉水（３５℃〜４５℃）が貯湯タ
ンク９内に補充される。この温泉水の補充により水温が
６０℃以下となったときは（Ｓ８） 、電磁弁１２ｅを
閉とするとともに（Ｓ９）、ポンプ１０ｂを再度駆動す
る（Ｓ１０）。これにより、再度貯湯タンク９内の温泉
水を熱交換器４内の水により追い焚きを行う。On the other hand, when the water level in the hot water storage tank 9 decreases due to water injection into the hot water storage tank 9, the hot spring water (35°C to 45°C) is replenished into the hot water storage tank 9 from the hot spring well 7 by driving the submersible pump 8a. Ru. When the water temperature falls below 60° C. due to this hot spring water replenishment (S8), the solenoid valve 12e is closed (S9) and the pump 10b is driven again (S10). As a result, the hot spring water in the hot water storage tank 9 is reheated again using the water in the heat exchanger 4.
このように、熱交換器４内の蓄熱が貯湯タンク９内の温
泉水の追い焚きに利用され、かつ、貯７３タンク９内の
水温が６５℃以上となったときは温泉井戸７に戻される
から、熱交換器４内の水温の上昇が抑制される。従って
、熱交換器４内の高温水を温泉井戸７に注水することに
伴なう温泉成分の稀釈化、並びに市水の消費を抑制する
ことができる。In this way, the heat stored in the heat exchanger 4 is used to reheat the hot spring water in the hot water storage tank 9, and when the water temperature in the storage tank 9 reaches 65°C or higher, it is returned to the hot spring well 7. Therefore, an increase in the water temperature in the heat exchanger 4 is suppressed. Therefore, it is possible to suppress the dilution of the hot spring components caused by pouring the high temperature water in the heat exchanger 4 into the hot spring well 7, as well as the consumption of city water.
また、熱交換器４及び貯湯タンク９における余剰排熱が
温泉井戸７或いは滞水層７ａに蓄熱されるから、水中ポ
ンプ８ａを駆動するとき、温泉井戸７内の温泉水ととも
に貯湯タンク９内に給送され、給湯用の温水として有効
に利、用されることとなる。In addition, excess waste heat from the heat exchanger 4 and the hot water storage tank 9 is stored in the hot spring well 7 or the water reservoir layer 7a, so when the submersible pump 8a is driven, the hot spring water in the hot spring well 7 is released into the hot water storage tank 9. This will be effectively used as hot water for hot water supply.
更に、このように熱交換器４内の水が温泉井戸７内に貯
留され、温泉井戸７が熱交換器４の蓄熱部となるから、
熱交換器４を大型にすることなく、内燃機関１ａの排熱
が全て蓄熱される。Furthermore, since the water in the heat exchanger 4 is stored in the hot spring well 7 in this way, and the hot spring well 7 becomes the heat storage part of the heat exchanger 4,
All the exhaust heat of the internal combustion engine 1a is stored without increasing the size of the heat exchanger 4.
更にまた、温泉井戸７内の温泉水を熱交換器４内に導く
ものではないから、熱交換器４及び各熱交換部２ａ、３
ａが温泉水により破損するといった事態を起すことがな
い。Furthermore, since the hot spring water in the hot spring well 7 is not guided into the heat exchanger 4, the heat exchanger 4 and each heat exchange section 2a, 3
There is no possibility that a will be damaged by hot spring water.
更にまた、給水配管系５の市水は冷却回路６の凝縮器６
ａにより加熱されるから、冷房装置の排熱が熱交換器４
内への水の予熱として有効に利用されることとなる。Furthermore, the city water in the water supply piping system 5 is supplied to the condenser 6 of the cooling circuit 6.
Since the exhaust heat from the cooling device is heated by the heat exchanger 4
This will be effectively used to preheat the water inside.
（発明の効果）
以上説明したように、請求項（１）の発明によれば、冷
却水用熱交換部を通過した冷却水の水温が所定温度、例
えば許容冷却水温度以上となったときは、この熱交換器
内の蓄熱水が温泉井戸内に貯留されるため、従来の如く
蓄熱水を投棄することなく、温泉水とともに給湯用とし
て有効に利用できる。また、温泉井戸が熱交換器の蓄熱
部として利用されるから、熱交換器を大型にすることな
く、内燃機関の排熱を全て蓄熱できる。(Effects of the Invention) As explained above, according to the invention of claim (1), when the temperature of the cooling water that has passed through the cooling water heat exchanger reaches a predetermined temperature, for example, the allowable cooling water temperature, Since the heat-storage water in the heat exchanger is stored in the hot spring well, the heat-storage water can be effectively used for hot water supply along with the hot spring water, without having to be disposed of as in the past. Furthermore, since the hot spring well is used as the heat storage part of the heat exchanger, all of the exhaust heat from the internal combustion engine can be stored without increasing the size of the heat exchanger.
請求項（２）の発明によれば、ビルなどの建物に設置さ
れた冷房装置の冷却回路の排熱を給水配管系の予熱に利
用して排熱回収を行なわれ、装置全体の省エネルギーを
実現できるという利点を有する。According to the invention of claim (2), the exhaust heat of the cooling circuit of the air conditioner installed in a building or other building is used to preheat the water supply piping system and the exhaust heat is recovered, thereby realizing energy saving of the entire device. It has the advantage of being able to
第１図、第３図及び第４図は本発明の一実施例を示すも
ので、第１図は内燃機関の排熱利用装置の水回路図、第
２図は従来の内燃機関の排熱利用装置の水回路図、第３
図は電磁弁及びポンプの制御ブロック図、第４図は電磁
弁及びポンプの駆動制御を示すフローチャートである。
図中、１・・・コ・ジェネレーションユニット、１ａ・
・・内燃機関、２・・・冷却水配管系、３・・・排気配
管系、４・・・熱交換器、５・・・給水配管系、６・・
・冷却回路、７・・・温泉井戸、８・・・揚水配管系、
１４ａ。
１４ｂ・・・温度センサ。Figures 1, 3, and 4 show an embodiment of the present invention. Figure 1 is a water circuit diagram of an internal combustion engine exhaust heat utilization device, and Figure 2 is a conventional internal combustion engine exhaust heat utilization device. Water circuit diagram of the equipment used, Part 3
The figure is a control block diagram of the solenoid valve and pump, and FIG. 4 is a flowchart showing drive control of the solenoid valve and pump. In the figure, 1... Co-generation unit, 1a.
...Internal combustion engine, 2...Cooling water piping system, 3...Exhaust piping system, 4...Heat exchanger, 5...Water supply piping system, 6...
・Cooling circuit, 7...hot spring well, 8...pumping piping system,
14a. 14b...Temperature sensor.
Claims (2)
の熱を放出する排気用熱交換部を有する排気配管系と、 内燃機関の冷却水を循環するとともに一部に冷却水中の
熱を放出する冷却水用熱交換部を有する冷却水配管系と
、 前記排気用熱交換部及び前記冷却水用熱交換部と熱的に
接触し貯留した水が該各熱交換部により加熱される熱交
換器と、 温泉井戸の温泉水を汲上げる揚水配管系と、前記熱交換
器内に市水等の前記温泉水以外の水を給送する給水配管
系と、 前記冷却水用熱交換部を通過した冷却水が所定温度以上
となったとき前記熱交換器内の水を前記温泉井戸内に注
入する注水配管系とを備えたことを特徴とする内燃機関
の排熱利用装置。(1) An exhaust piping system having an exhaust heat exchange section that discharges the exhaust gas of the internal combustion engine and partially releases the heat in the exhaust gas; and an exhaust piping system that circulates the internal combustion engine's cooling water and partially releases the heat in the cooling water. A cooling water piping system having a cooling water heat exchange section for discharging; and a cooling water piping system having a heat exchange section for cooling water to be discharged; an exchanger, a pumping piping system for pumping up hot spring water from a hot spring well, a water supply piping system for feeding water other than the hot spring water, such as city water, into the heat exchanger, and the cooling water heat exchange section. An apparatus for utilizing waste heat of an internal combustion engine, comprising: a water injection piping system that injects water in the heat exchanger into the hot spring well when the cooling water that has passed reaches a predetermined temperature or higher.
換する熱交換器を設けた ことを特徴とする請求項（１）記載の内燃機関の排熱利
用装置。(2) The exhaust heat utilization device for an internal combustion engine according to claim (1), characterized in that the water supply piping system is provided with a heat exchanger for exchanging heat with exhaust heat of a cooling circuit of an air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1314281A JPH03175136A (en) | 1989-12-05 | 1989-12-05 | Device for utilizing exhaust heat of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1314281A JPH03175136A (en) | 1989-12-05 | 1989-12-05 | Device for utilizing exhaust heat of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03175136A true JPH03175136A (en) | 1991-07-30 |
Family
ID=18051476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1314281A Pending JPH03175136A (en) | 1989-12-05 | 1989-12-05 | Device for utilizing exhaust heat of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03175136A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013503298A (en) * | 2009-08-27 | 2013-01-31 | マクアリスター テクノロジーズ エルエルシー | Energy system for residential facilities support |
| KR20200076652A (en) * | 2018-12-19 | 2020-06-29 | 엘지전자 주식회사 | Auxiliary cooling water storage device and Energy generating device having the same |
-
1989
- 1989-12-05 JP JP1314281A patent/JPH03175136A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013503298A (en) * | 2009-08-27 | 2013-01-31 | マクアリスター テクノロジーズ エルエルシー | Energy system for residential facilities support |
| KR20200076652A (en) * | 2018-12-19 | 2020-06-29 | 엘지전자 주식회사 | Auxiliary cooling water storage device and Energy generating device having the same |
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