JPH08242705A - Heater using warm water boiler - Google Patents
Heater using warm water boilerInfo
- Publication number
- JPH08242705A JPH08242705A JP7081728A JP8172895A JPH08242705A JP H08242705 A JPH08242705 A JP H08242705A JP 7081728 A JP7081728 A JP 7081728A JP 8172895 A JP8172895 A JP 8172895A JP H08242705 A JPH08242705 A JP H08242705A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water boiler
- boiler
- heat exchangers
- heat exchanger
- 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.)
- Granted
Links
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Greenhouses (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、温水ボイラを用いた
加温装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device using a hot water boiler.
【０００２】[0002]
【従来の技術】温室、例えば、水稲育苗用温室では、所
定の温度に保つために、各種の加熱装置が使用されてい
る。例えば、温水を、温室に配置した放熱器（熱交換
器）に供給することによって温室内を加温していた。ま
た、熱源として蒸気を用いた場合、この蒸気を直接温室
内に吹き込んで加温したり、蒸気を熱交換器に供給して
加熱し、凝縮したドレンをのみを系外に排出するように
構成したものがある。しかしこれらには、それぞれ以下
のような問題があった。まず最初に、温水を熱交換器に
供給して温室内を加温する方法においては、温水の温度
が低く（一般に60℃程度）、熱交換器の単位表面積当り
の放熱量が低いため、熱交換器が大形化する。また、熱
交換器としてエロフィン管（フィン付管の一種）を用い
る場合、配管長さが長くなると共に、ピット配管も難し
くなり、工事費も増加する。更に、配管長さが長いた
め、圧損が大きくなり、温水を熱交換器に循環供給する
ための循環ポンプの能力も大きく設定する必要が合っ
て、ランニングコストが高くなる。次に、蒸気を温室内
に直接吹出して、温室内を加温する方法においては、高
温の蒸気が温室内に充満するため、非常に危険である。
更にこの方法の場合、温室の壁に水滴が付着し、変色す
るため美観を損ねる。また、この方法や、ドレンを系外
に排出する方法においては、ボイラへの補給水を常時行
なう必要がある。2. Description of the Related Art In a greenhouse, for example, a greenhouse for raising rice seedlings, various heating devices are used to maintain a predetermined temperature. For example, the inside of a greenhouse is heated by supplying hot water to a radiator (heat exchanger) arranged in the greenhouse. When steam is used as a heat source, the steam is blown directly into the greenhouse to heat it, or the steam is supplied to a heat exchanger to heat it and only the condensed drain is discharged to the outside of the system. There is something I did. However, each of them had the following problems. First of all, in the method of heating the inside of the greenhouse by supplying hot water to the heat exchanger, the temperature of the hot water is low (generally about 60 ° C) and the amount of heat released per unit surface area of the heat exchanger is low. Exchanger becomes larger. Further, when an erotic fin tube (a type of finned tube) is used as the heat exchanger, the piping length becomes long, pit piping becomes difficult, and the construction cost increases. Further, since the length of the pipe is long, the pressure loss becomes large, and the ability of the circulation pump to circulate and supply the hot water to the heat exchanger needs to be set to be large, which increases the running cost. Next, in the method in which steam is directly blown into the greenhouse to heat the inside of the greenhouse, high temperature steam fills the inside of the greenhouse, which is extremely dangerous.
Furthermore, in the case of this method, water droplets adhere to the wall of the greenhouse and discolor, which impairs the appearance. Further, in this method and the method of discharging the drain out of the system, it is necessary to constantly supply water to the boiler.
【０００３】[0003]
【発明が解決しようとする課題】すなわち、この発明が
解決しようとする課題は、熱交換器の放熱量を増大させ
ることにより熱交換器を小形化し、また、循環ポンプの
小容量化を図ることによってランニングコストを低減し
た温水ボイラを用いた加温装置を提供することである。That is, the problem to be solved by the present invention is to reduce the size of the heat exchanger by increasing the heat radiation amount of the heat exchanger and to reduce the capacity of the circulation pump. Accordingly, it is an object of the present invention to provide a heating device using a hot water boiler with reduced running cost.
【０００４】[0004]
【課題を解決するための手段】この発明は、上述の課題
を解決するためになされたもので、温水ボイラと、被加
熱箇所に設置した熱交換器と、前記温水ボイラと前記熱
交換器との間に接続した温水の循環流路と、前記温水ボ
イラまたは循環流路に、内部の温水を加圧する加圧手段
を設けたことを特徴とする温水ボイラを用いた加温装置
である。The present invention has been made to solve the above-mentioned problems, and includes a hot water boiler, a heat exchanger installed at a heated location, the hot water boiler and the heat exchanger. A heating device using a hot water boiler, characterized in that a hot water circulating flow path connected between the hot water boiler and the hot water boiler or the circulating flow path is provided with a pressurizing means for pressurizing hot water inside.
【０００５】[0005]
【作用】この発明に係る温水ボイラを用いた加温装置に
よるときは、循環流路の途中に設けた熱交換器への熱源
としての温水を加圧状態で供給できる。また、前述の構
成により温水ボイラと熱交換器を循環流路によって閉鎖
系とすることができる。In the heating device using the hot water boiler according to the present invention, hot water as a heat source to the heat exchanger provided in the middle of the circulation passage can be supplied under pressure. Moreover, the hot water boiler and the heat exchanger can be made into a closed system by a circulation flow path by the above-mentioned structure.
【０００６】[0006]
【実施例】以下、この発明を図面を参照しながら説明す
る。尚、図１は、この発明に係るボイラを用いた加温装
置の一実施例を示す図面である。図面において、熱源で
ある温水を発生するための温水ボイラ(10)は、例えば貫
流式ボイラであって、被加熱箇所に設置した熱交換器(1
1)(12)に対して循環流路(13)によって接続してある。こ
のような接続により、蒸気を直接温室内に吹出す方法に
比べ、温室内に高温蒸気が流れ込まないため、安全性が
高い。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 is a drawing showing an embodiment of a heating device using the boiler according to the present invention. In the drawings, a hot water boiler (10) for generating hot water that is a heat source is, for example, a once-through boiler, and a heat exchanger (1
It is connected to (1) and (12) by a circulation channel (13). With such a connection, high-temperature steam does not flow into the greenhouse, so that the safety is high as compared with the method of directly blowing the steam into the greenhouse.
【０００７】この循環流路(13)中に接続した熱交換器(1
1)(12)は、並列接続状態となっており、例えば、一方は
温室のピット内に、他方は壁面に設置される。この熱交
換器(11)(12)としては、例えば、フィン付管を循環流路
(13)の一部としてそのまま用いたものや、複数本のフィ
ン付管をユニット形式状に構成したもの等を用いること
ができる。前記循環流路(13)における温水ボイラ(10)と
熱交換器(11)(12)との間には、熱交換器(11)(12)に温水
を供給するための循環ポンプ(14)(15)を接続してある。
各循環ポンプ(14)(15)は、対応する熱交換器(11)(12)と
それぞれ直列に接続されており、この状態で、前記温水
ボイラ(10)に対して互いに並列接続状態となっている。[0007] The heat exchanger (1
1) and 12) are connected in parallel, for example, one is installed in a pit of a greenhouse and the other is installed on a wall surface. As the heat exchangers (11) and (12), for example, a finned tube is used as a circulation flow path.
It is possible to use the one used as it is as a part of (13), the one having a plurality of finned tubes in a unit form, or the like. A circulation pump (14) for supplying hot water to the heat exchangers (11) and (12) between the hot water boiler (10) and the heat exchangers (11) and (12) in the circulation flow path (13). (15) is connected.
Each circulation pump (14) (15) is connected in series with the corresponding heat exchanger (11) (12), and in this state, they are connected in parallel with each other to the hot water boiler (10). ing.
【０００８】この循環流路(13)には、温水ボイラ(10)，
熱交換器(11)(12)，循環流路(13)で構成される閉回路内
の温水を加圧する加圧手段(16)を設けてある。前記加圧
手段(16)は、図示する実施例においては、温水ボイラ(1
0)への給水手段としても機能する加圧用ポンプ(16)であ
って、循環流路(13)における温水ボイラ(10)の上流側に
接続してある。更にこの循環流路(13)には、前記加圧用
ポンプ(16)の上流側に膨張タンク(17)を接続してある。
この膨張タンク(17)は、運転時の温水の膨張による圧力
上昇の吸収し、圧力の平衡を保つためのものである。
尚、この発明の加温装置は、従来の蒸気を熱源とするも
ののようにボイラへの給水は、常時行なう必要はない
が、初期起動時（例えば、最初の起動時や全ブロー後の
再起動時等）や、洩れなどにより、循環流路(13)内の圧
力を上昇させる際には、この加圧用ポンプ(16)により循
環経路(13)を介して供給する。In the circulation flow path (13), a hot water boiler (10),
A pressurizing means (16) for pressurizing hot water in a closed circuit composed of the heat exchangers (11) and (12) and the circulation channel (13) is provided. The pressurizing means (16) is a hot water boiler (1
A pressurizing pump (16) that also functions as a water supply means to (0), and is connected to the upstream side of the hot water boiler (10) in the circulation flow path (13). Further, an expansion tank (17) is connected to the circulation passage (13) on the upstream side of the pressurizing pump (16).
The expansion tank (17) is for absorbing a pressure increase due to expansion of hot water during operation and for maintaining a pressure balance.
Note that the heating device of the present invention does not need to constantly supply water to the boiler unlike the conventional device using steam as a heat source, but at the time of initial startup (for example, at initial startup or after restarting after all blows) When the pressure in the circulation flow path (13) is increased due to leakage or the like), the pressure pump (16) supplies the pressure through the circulation path (13).
【０００９】以上の構成において、温水ボイラ(10)を起
動し、循環ポンプ(14)(15)を起動させると、温水は、循
環ポンプ(14)(15)により、対応する熱交換器(11)(12)に
向けて圧送される。そして、この温水は、熱交換器(11)
(12)において、温室内を加熱した後、循環流路(13)を介
して温水ボイラ(10)内に還流し、再度加熱されて熱交換
器(11)(12)に向けて圧送される。ここで、前記循環流路
(13)は、温水ボイラ(10)、並びに熱交換器(11)(12)を接
続した密閉系となっており、加圧用ポンプ(16)によって
循環流路(13)内の圧力は上昇している。そのため、この
循環流路(13)内の温水を高温に保つことができ、熱交換
器(11)(12)へもこの高温の温水を供給することができ
る。従って、熱交換器(11)(12)への供給熱量の増加が図
れる。換言すれば、熱交換器(11)(12)の小容量化が図れ
ることになる。また、この際の循環流路(13)内の温水の
圧力変動は、前記密閉式の膨張タンク(17)によって吸収
され、安全に高圧状態を維持することができる。更に、
温水ボイラ(10)への給水は、この循環流路(13)の温水ボ
イラ(10)への戻り側部分に接続した加圧用ポンプ(16)に
よって、前記循環流路(13)を介して行なわれる。In the above construction, when the hot water boiler (10) is started and the circulation pumps (14) and (15) are started, the hot water is supplied to the corresponding heat exchanger (11) by the circulation pumps (14) and (15). ) (12) is pumped. And this hot water is the heat exchanger (11)
In (12), after heating the inside of the greenhouse, it is returned to the hot water boiler (10) through the circulation flow path (13), heated again, and pumped toward the heat exchangers (11) and (12). . Here, the circulation channel
(13) is a closed system in which the hot water boiler (10) and the heat exchangers (11) and (12) are connected, and the pressure in the circulation passage (13) is increased by the pressurizing pump (16). ing. Therefore, the hot water in the circulation passage (13) can be kept at a high temperature, and the hot water can be supplied to the heat exchangers (11, 12). Therefore, the amount of heat supplied to the heat exchangers (11) and (12) can be increased. In other words, the heat exchangers (11) and (12) can be downsized. Further, the pressure fluctuation of the hot water in the circulation flow path (13) at this time is absorbed by the closed expansion tank (17), and the high pressure state can be safely maintained. Furthermore,
Water supply to the hot water boiler (10) is performed through the circulation flow path (13) by a pressurizing pump (16) connected to the return side portion of the circulation flow path (13) to the hot water boiler (10). Be done.
【００１０】以上の実施例においては、温水ボイラ(1
0)，熱交換器(11)(12)，循環流路(13)で構成される閉回
路内の温水を加圧する加圧手段(16)として、加圧用ポン
プを用いたもので、上述のような水稲育苗用等の温室に
好適なものである。しかし、この発明において、加圧手
段(16)は加圧用ポンプに限らるものではなく、要する
に、温水ボイラ(10)，熱交換器(11)(12)，循環流路(13)
で構成される閉回路内の温水を加圧するものであればよ
い。例えば図２に示すように、所定の高さの高架水槽(1
6') を設け、この高架水槽(16') と温水ボイラ(10)とを
逆止弁(18)を介して接続した構成とする。尚、前記逆止
弁(18)は、温水ボイラ(10)側の温水が高架水槽(16') に
逆流するのを防止するためのものである。この構成によ
れば、高架水槽(16') と温水ボイラ(10)の水頭圧差によ
って、前記閉回路内の温水を加圧することができる。In the above embodiment, the hot water boiler (1
0), the heat exchangers (11) (12), and the circulation flow path (13), a pressurizing pump is used as the pressurizing means (16) for pressurizing the hot water in the closed circuit. It is suitable for greenhouses for growing rice seedlings. However, in the present invention, the pressurizing means (16) is not limited to the pressurizing pump, and in short, the hot water boiler (10), the heat exchangers (11) (12), the circulation flow path (13).
It suffices to pressurize the hot water in the closed circuit constituted by. For example, as shown in Fig. 2, an elevated water tank (1
6 ') is provided and the elevated water tank (16') and the hot water boiler (10) are connected via a check valve (18). The check valve (18) is for preventing hot water on the hot water boiler (10) side from flowing back into the elevated water tank (16 '). According to this configuration, the hot water in the closed circuit can be pressurized by the head pressure difference between the elevated water tank (16 ′) and the hot water boiler (10).
【００１１】以上のように、この発明によれば、従来の
加熱装置に比べて高温の温水を用いることができるた
め、熱交換器(11)(12)の放熱量が増加し、熱交換器(11)
(12)を小容量化することができるので、材料費用が安
く、工期も大幅に短縮できる。例えば、熱交換器(11)(1
2)に供給する温水が、従来の倍の約 120℃とした場合に
は、エロフィン管の長さを約１／３に短縮することがで
きる。また、放熱量の増加により、温水の供給量の低減
化や配管の短縮化が図れることから、配管抵抗が低くな
り、循環ポンプ(14)(15)を容量の小さなものとすること
ができるため、ランニングコストの削減も達成できる。
例えば、前述のような、エロフィン管を熱交換器(11)(1
2)として用いたものの場合には、従来の約半分のランニ
ングコストとすることができる。また、熱交換器(11)と
してエロフィン管を用いる場合にはエロフィン管を含め
て配管長さを短くできるため、温室のピット内への配管
も容易で、工期も大幅に短縮でき、工事費も低減する。
また、このように温室のピットへの内配管とすることに
より、温室内スペースの有効利用が可能となる。また、
上述のようにピット内配管とした場合には、ピット内に
水が溜まった場合にも、熱交換器(11)(12)に供給する温
水が高温であるため、ピット内の水を蒸発させ、嵌挿す
ることができて、温室内を衛生的に保つこともできる。As described above, according to the present invention, since hot water having a higher temperature than that of the conventional heating device can be used, the heat radiation amount of the heat exchangers (11) (12) is increased, and the heat exchangers are increased. (11)
Since the capacity of (12) can be reduced, the material cost is low and the construction period can be greatly shortened. For example, the heat exchanger (11) (1
When the hot water supplied to 2) is about 120 ° C., which is twice the conventional value, the length of the erotic fin tube can be shortened to about 1/3. In addition, since the amount of heat dissipation can be reduced, the amount of hot water supplied can be reduced and the piping can be shortened, so the piping resistance can be reduced and the circulation pumps (14) (15) can be made smaller in capacity. Also, the running cost can be reduced.
For example, as described above, the erotic fin tube is used for the heat exchanger (11) (1
In the case of the one used as 2), the running cost can be about half that of the conventional one. Also, when using the erofin pipe as the heat exchanger (11), the length of the pipe including the erofin pipe can be shortened, so that it is easy to pipe into the pit of the greenhouse, and the construction period can be greatly shortened, and the construction cost is also low. Reduce.
In addition, by using the internal piping to the pit of the greenhouse in this way, the space inside the greenhouse can be effectively used. Also,
In the case of using the piping in the pit as described above, even if water accumulates in the pit, the hot water supplied to the heat exchangers (11) (12) is at a high temperature, so the water in the pit is evaporated. , It can be inserted, and the inside of the greenhouse can be kept hygienic.
【００１２】[0012]
【発明の効果】以上説明したように、この発明によれ
ば、従来の加熱装置に比べて、高温の温水を用いること
ができるため、熱交換器の放熱量を増加させ、熱交換器
を小容量化することができる。また、放熱量の増加によ
り、温水の供給量の低減化や配管の短縮化が図れること
から、配管抵抗が低くなり、循環ポンプを容量の小さな
ものとすることができるため、ランニングコストの削減
も達成できる。特に、熱交換器としてエロフィン管を用
いる場合にはエロフィン管を含めて配管長さを短くでき
るため、温室のピット内への配管も容易で、工期も大幅
に短縮でき、工事費も低減する。また、このように温室
のピットへの内配管とすることにより、温室内スペース
の有効利用が可能である。As described above, according to the present invention, hot water having a higher temperature can be used as compared with the conventional heating device, so that the heat radiation amount of the heat exchanger is increased and the heat exchanger is reduced in size. Capacitance can be achieved. In addition, since the amount of heat dissipation can be reduced to reduce the supply of hot water and shorten the piping, the piping resistance can be reduced and the circulation pump can be made smaller, which also reduces the running cost. Can be achieved. In particular, when the erofin tube is used as the heat exchanger, the length of the tube including the erofin tube can be shortened, so that the piping into the pit of the greenhouse is easy, the construction period can be greatly shortened, and the construction cost can be reduced. Further, by using the internal piping to the pit of the greenhouse in this way, the space inside the greenhouse can be effectively used.
【図１】この発明の一実施例を示す図面である。FIG. 1 is a drawing showing an embodiment of the present invention.
【図２】この発明の他の実施例を示す図面である。FIG. 2 is a view showing another embodiment of the present invention.
(10) 温水ボイラ (11) 熱交換器 (12) 熱交換器 (13) 循環流路 (14) 循環ポンプ (15) 循環ポンプ (16) 加圧手段（加圧ポンプ） (16') 加圧手段（高架水槽） (17) 膨張タンク (18) 逆止弁 (10) Hot water boiler (11) Heat exchanger (12) Heat exchanger (13) Circulating flow path (14) Circulating pump (15) Circulating pump (16) Pressurizing means (pressurizing pump) (16 ') Pressurizing Means (Elevated Water Tank) (17) Expansion Tank (18) Check Valve
Claims (1)
た熱交換器(11)(12)と、前記温水ボイラ(10)と前記熱交
換器(11)(12)との間に接続した温水の循環流路(13)と、
前記温水ボイラ(10)または循環流路(13)に、内部の温水
を加圧する加圧手段(16)を設けたことを特徴とする温水
ボイラを用いた加温装置。1. A hot water boiler (10), heat exchangers (11) (12) installed at a heated location, and between the hot water boiler (10) and the heat exchangers (11) (12). With the circulation channel (13) of the hot water connected,
A heating device using a hot water boiler, characterized in that a pressurizing means (16) for pressurizing hot water inside is provided in the hot water boiler (10) or the circulation flow path (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7081728A JP2907056B2 (en) | 1995-03-13 | 1995-03-13 | Heating device using hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7081728A JP2907056B2 (en) | 1995-03-13 | 1995-03-13 | Heating device using hot water boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08242705A true JPH08242705A (en) | 1996-09-24 |
| JP2907056B2 JP2907056B2 (en) | 1999-06-21 |
Family
ID=13754484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7081728A Expired - Lifetime JP2907056B2 (en) | 1995-03-13 | 1995-03-13 | Heating device using hot water boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2907056B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007322029A (en) * | 2006-05-30 | 2007-12-13 | Chugoku Electric Power Co Inc:The | Hot water heat supply system by steam pressurization method |
| JP2007322026A (en) * | 2006-05-30 | 2007-12-13 | Chugoku Electric Power Co Inc:The | Hot water heat supply system by gas pressurization method |
| JP2013031401A (en) * | 2011-08-02 | 2013-02-14 | Toyota Kosan Kk | Snow melting device of multi-span type vinyl house |
-
1995
- 1995-03-13 JP JP7081728A patent/JP2907056B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007322029A (en) * | 2006-05-30 | 2007-12-13 | Chugoku Electric Power Co Inc:The | Hot water heat supply system by steam pressurization method |
| JP2007322026A (en) * | 2006-05-30 | 2007-12-13 | Chugoku Electric Power Co Inc:The | Hot water heat supply system by gas pressurization method |
| JP4578437B2 (en) * | 2006-05-30 | 2010-11-10 | 中国電力株式会社 | Hot water heat supply system by steam pressurization method |
| JP2013031401A (en) * | 2011-08-02 | 2013-02-14 | Toyota Kosan Kk | Snow melting device of multi-span type vinyl house |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2907056B2 (en) | 1999-06-21 |
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