JP3747055B2 - Charge apportionment method for hot water storage system for apartment houses - Google Patents

Charge apportionment method for hot water storage system for apartment houses Download PDF

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JP3747055B2
JP3747055B2 JP2002370665A JP2002370665A JP3747055B2 JP 3747055 B2 JP3747055 B2 JP 3747055B2 JP 2002370665 A JP2002370665 A JP 2002370665A JP 2002370665 A JP2002370665 A JP 2002370665A JP 3747055 B2 JP3747055 B2 JP 3747055B2
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Prior art keywords
hot water
household
water storage
water supply
amount
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JP2002370665A
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JP2004198086A (en
Inventor
勝五 五十嵐
敏雄 広川
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Corona Corp
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Corona Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、複数世帯で共用される集合住宅用貯湯式給湯装置の料金按分方法に関するものである。
【0002】
【従来の技術】
従来よりこの種のものは、マンションやアパート等の集合住宅において、各世帯に専用の貯湯式給湯装置が設置されているものであった。(例えば特許文献1)
【0003】
【特許文献1】
特開平5−5558号公報
【0004】
【発明が解決しようとする課題】
しかし、この従来のものでは世帯数分の貯湯式給湯装置が必要で、設備コストが多額となってしまう欠点があるため、複数世帯で1台の貯湯式給湯装置を共用するようにすれば設備コストを下げることができる。
【0005】
ところが、貯湯式給湯装置は時間帯別契約電力が供給され、電力単価が安価な深夜時間帯に必要な湯量を沸き上げるようにし、給湯負荷が突発的に大きくなって湯切れが予測される場合は昼間時間帯に足りなくなった分を電力単価の高い昼間電力を利用して沸き増しするものであるので、一定温度の湯を給湯するのに要するコストが時間帯により変動する。そのため、各世帯へ個別に適正な料金を按分することができないものであった。
【0006】
【問題点を解決するための手段】
この発明はこの点に着目し上記欠点を解決する為、特にその構成を、時間帯別電灯契約の電源が接続され、沸き上げた温水を貯湯して複数世帯に給湯する貯湯式給湯装置において、前記貯湯式給湯装置から各世帯へ分岐された複数の給湯配管にそれぞれ設けられた各世帯毎の使用湯量を積算する使用湯量計と、前記貯湯式給湯装置から各世帯へ分岐された複数の給水配管にそれぞれ設けられた各世帯毎の使用水量を積算する使用水量計と、各世帯の全ての使用水量を積算する総水量計と、前記貯湯式給湯装置の消費電力を時間帯別に積算する電力計とを設け、前記貯湯式給湯装置の電力量料金を各世帯毎の使用湯量の比により各世帯に按分し、各世帯の全ての水道料金を各世帯毎の使用湯量および使用水量の合計の比により各世帯に按分するようにしたものである。
【0009】
【発明の実施の形態】
次に、この発明に係る集合住宅用貯湯式給湯装置の電力量料金按分方法の一実施形態について説明すると、1はアパート等の集合住宅2に設置された貯湯式給湯装置で、ここでは1階と2階の二世帯に給湯を行うものである。
【0010】
3は貯湯式給湯装置1から各世帯に分岐された給湯配管4に設けられた使用湯量計、5は各世帯に分岐された給水配管6に設けられた使用水量計で、各世帯毎の使用湯量および使用水量を積算するものである。そして、7は各世帯の任意の場所に設けられた湯水混合栓で、ユーザーはこの湯水混合栓7を所望の湯温に調整して給湯するようにしているものである。
【0011】
8は前記貯湯式給湯装置1の動力源となる電源で、電力需要の昼夜の平準化のために深夜時間帯の電力量料金が安く、昼間時間帯の電力量料金が高く設定された時間帯別電灯契約の電源である。9は時間帯別電灯契約の電源8の各時間帯毎の消費電力を積算する電力計、10は各時間帯毎の電力単価を記憶している電力単価記憶部、11は各時間帯毎の消費電力量と電力単価とから使用電力の電力量料金を算出する電力量料金算出部である。ここで、前記電力単価記憶部10は電力単価を書き換える手段(図示せず)を有して単価のタイムリーな更新が可能とし、電力単価の変動に対応可能としている。
【0012】
また、12は全ての使用水量を積算する総水量計、13は水道料金の単価を記憶している水道単価記憶部、14は総使用水量から水道料金を算出する水道料金算出部である。ここで、前記水道単価記憶部13は単価を書き換える手段(図示せず)を有して単価のタイムリーな更新が可能とし、水道単価の変動に対応可能としている。
【0013】
ここで複数世帯で共用される貯湯式給湯装置1は、ヒートポンプ式給湯機より構成されており、15は湯水を貯湯する貯湯タンク16を有した貯湯タンクユニット、17は貯湯タンク16内の湯水を加熱するヒートポンプ回路18を有したヒーポンユニットである。
【0014】
前記貯湯タンクユニット15の貯湯タンク16は、上端に出湯管19と、下端に給水管20とが接続され、さらに、下部にヒーポン循環回路21を構成するヒーポン往き管21aと、上部にヒーポン戻り管21bとが接続され、前記ヒーポン往き管21aから取り出した貯湯タンク16内の湯水をヒートポンプユニット17によって沸き上げて、ヒーポン戻り管21bから貯湯タンク16内に戻して貯湯され、給水管20からの給水により貯湯タンク16内の湯水が押し上げられて貯湯タンク16内上部の高温水が出湯管19から押し出されて給湯されるものである。
【0015】
22は出湯管19に設けられた電動ミキシング弁で、給水管20から分岐された給水バイパス管23からの湯水と出湯管19からの湯水とを、その下流に設けられている給湯温度センサ24の検出温度が予め定められた所定の給湯温度(ここでは60℃)になるように混合比率を調整するものである。
【0016】
次に、前記ヒートポンプユニット17は、圧縮機25と凝縮器としての冷媒−水熱交換器26と電子膨張弁27と強制空冷式の蒸発器28とで構成された加熱手段としてのヒートポンプ回路18と、貯湯タンク16内の湯水を前記ヒーポン循環回路21を介して冷媒−水熱交換器26に循環させるヒーポン循環ポンプ29とを備えており、ヒートポンプ回路18内には冷媒として二酸化炭素が用いられて超臨界ヒートポンプサイクルを構成しているものである。なお、冷媒に二酸化炭素を用いているので、低温水を電熱ヒータなしで約90℃の高温まで沸き上げることが可能なものである。
【0017】
ここで、前記冷媒−水熱交換器26は冷媒と被加熱水たる貯湯タンク16内の湯水とが対向して流れる対向流方式を採用しており、超臨界ヒートポンプサイクルでは熱交換時において冷媒は超臨界状態のまま凝縮されるため効率良く高温まで被加熱水を加熱することができ、被加熱水の冷媒−水熱交換器20入口温度と冷媒の出口温度との温度差が一定になるように前記電子膨張弁27または圧縮機25を制御することで、被加熱水の冷媒−水熱交換器26の入口温度が5〜20℃程度の低い温度であるとCOP(エネルギー消費効率)が3.0以上のとても良い状態で被加熱水を加熱することが可能なものである。
【0018】
このように貯湯タンク16内の湯水を沸き上げるときに消費される電力は電力計9によって時間帯別に監視され、電力単価記憶部10に記憶された各時間帯別の電力単価を用いて電力量料金算出部11によって電力量料金Xが算出される。
【0019】
そして、各世帯が給湯を行えば、貯湯式給湯装置1は貯湯タンク16内に貯められた高温の湯と給水バイパス管23からの水とを電動ミキシング弁22で一定温度になるよう混合して給湯する。そして各世帯において湯水混合栓7で所望の湯温に調整して給湯される。
【0020】
このとき、総水量計12は各世帯を合わせた全使用水量eを積算し、使用湯量計3および使用水量計5は各世帯毎の使用湯量a、bおよび使用水量c、dを積算する。そして、水道料金算出部14が水道単価記憶部13に記憶された水道単価と全使用水量eとから水道料金を算出し、そして、各世帯毎の使用湯量および使用水量の合計の比から各世帯毎の水道料金Yを算出可能としている。すなわち、世帯Vでの水道料金Y(V)は、Y・(a+c)/eで算出され、世帯Wでの水道料金Y(W)は、Y・(b+d)/eで算出される。よって、水道料金を各世帯へ個別に正確に按分することができる。
【0021】
そして、30は前記使用湯量計3で検出する各世帯の使用湯量の比と電力量料金算出部11で算出された電力量料金とから各世帯に按分する電力量料金を算出する電力量料金按分部30で、世帯Vに按分される電力量料金X(V)は、X・a/(a+b)で算出され、世帯Wに按分される電力量料金X(W)は、X・b/(a+b)で算出されることとなる。
【0022】
このように電力量料金を使用湯量の比によって按分するようにしているので、複数世帯で1台の貯湯式給湯装置1を共用することが可能となり、集合住宅の設備コストを下げることが可能となると共に、給湯にかかる電力量料金を各世帯へ個別に不公平感なく適正に按分することができるものである。
【0023】
なお、この一実施形態では1台の貯湯式給湯装置を2世帯で共用した例を示したが、これに限定されることなく、1台の貯湯式給湯装置を3、4世帯で共用するようにしても良い。また、集合住宅内の上下階の世帯で1台の貯湯式給湯装置を共用するので、重量物である貯湯式給湯装置を上階に上げる必要がなく設置容易となるものであるが、これに限定されることなく、同階の複数世帯で1台の貯湯式給湯装置を共用するようにしても良い。
【0024】
【発明の効果】
以上のように、本発明によれば、複数世帯で1台の貯湯式給湯装置を共用することが可能となり、集合住宅の設備コストを下げることが可能となると共に、給湯にかかる電力量料金、および水道料金を各世帯へ個別に不公平感なく適正に按分することができるものである。
【図面の簡単な説明】
【図1】本発明の一実施形態の貯湯式給湯装置の概略構成図。
【符号の説明】
1 貯湯式給湯装置
2 集合住宅
3 使用湯量計
4 給湯配管
8 電源
11 電力量料金算出部
30 電力量料金按分部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a charge apportioning method for a hot water storage hot water supply apparatus for an apartment house shared by a plurality of households.
[0002]
[Prior art]
Conventionally, in this type of apartment, a dedicated hot water storage hot water supply device has been installed in each household in an apartment house such as an apartment or an apartment. (For example, Patent Document 1)
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 5-5558
[Problems to be solved by the invention]
However, this conventional type requires the number of hot water storage hot water supply devices for the number of households and has the disadvantage of increasing the equipment cost. Cost can be reduced.
[0005]
However, when hot water storage type hot water supply equipment is supplied with contracted electric power by time zone, the amount of hot water required during midnight hours when the unit price of electricity is low is boiled, and the hot water supply load suddenly increases and hot water is expected to run out Is used to increase the amount of the shortage of daytime power using daytime power with a high power unit price, so the cost required to supply hot water at a constant temperature varies depending on the time of day. For this reason, it was impossible to apportion the appropriate fee individually to each household.
[0006]
[Means for solving problems]
This invention pays attention to this point, and in order to solve the above drawbacks, in particular, in the hot water storage type hot water supply apparatus that is connected to the power source of the lighting contract according to time zone, stores hot water that has been boiled and supplies hot water to a plurality of households, A hot water meter for integrating the amount of hot water used for each household provided in each of a plurality of hot water supply pipes branched from the hot water storage type hot water supply device to each household, and a plurality of water supplies branched from the hot water storage type hot water supply device to each household A water meter that integrates the amount of water used for each household installed in the piping, a total water meter that totals the amount of water used by each household, and a power that integrates the power consumption of the hot water storage hot water supply system by time zone The electricity charge of the hot water storage type hot water supply device is apportioned to each household according to the ratio of the amount of hot water used for each household, and all the water charges for each household are the sum of the amount of hot water used and the amount of water used for each household. Apportion to each household according to the ratio Those were Unishi.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a method for apportioning electric energy charges for a hot water storage hot water supply apparatus for an apartment house according to the present invention will be described. 1 is a hot water storage hot water supply apparatus installed in an apartment house 2 such as an apartment. And hot water is supplied to two households on the second floor.
[0010]
3 is a hot water meter provided in a hot water supply pipe 4 branched from the hot water storage hot water supply device 1 to each household, and 5 is a water consumption meter provided in a water supply pipe 6 branched into each household. The amount of hot water and the amount of water used are integrated. Reference numeral 7 denotes a hot and cold water mixing tap provided at an arbitrary location in each household. The user adjusts the hot water and water mixing tap 7 to a desired hot water temperature to supply hot water.
[0011]
8 is a power source serving as a power source for the hot water storage type hot water supply device 1, in order to level the power demand day and night, the power charge in the midnight time zone is low and the power charge in the daytime time zone is set high. It is a power source for a separate light contract. 9 is a power meter that integrates the power consumption of each time zone of the power supply 8 of the lamp contract according to time zone, 10 is a power unit price storage unit that stores the power unit price for each time zone, and 11 is for each time zone It is an electric energy charge calculation part which calculates the electric energy charge of electric power used from electric power consumption and an electric power unit price. Here, the electric power unit price storage unit 10 has means (not shown) for rewriting the electric power unit price so that the unit price can be updated in a timely manner and can cope with fluctuations in the electric power unit price.
[0012]
Reference numeral 12 denotes a total water meter that adds up all the used water amounts, 13 denotes a water unit price storage unit that stores the unit price of the water rate, and 14 denotes a water rate calculation unit that calculates a water rate from the total amount of water used. Here, the water-price unit storage unit 13 has means (not shown) for rewriting the unit price so that the unit price can be updated in a timely manner and can cope with fluctuations in the water-price unit.
[0013]
Here, a hot water storage hot water supply apparatus 1 shared by a plurality of households is composed of a heat pump hot water heater, 15 is a hot water storage tank unit having a hot water storage tank 16 for storing hot water, and 17 is hot water in the hot water storage tank 16. It is a heat pump unit having a heat pump circuit 18 for heating.
[0014]
The hot water storage tank 16 of the hot water storage tank unit 15 has a hot water discharge pipe 19 connected to the upper end, a water supply pipe 20 connected to the lower end, a heat pump forward pipe 21a constituting a heat pump circulation circuit 21 in the lower part, and a heat pump return pipe in the upper part. The hot water in the hot water storage tank 16 taken out from the heat pump outlet pipe 21a is boiled up by the heat pump unit 17, returned to the hot water storage tank 16 from the heat pump return pipe 21b, and hot water is stored. As a result, hot water in the hot water storage tank 16 is pushed up, and hot water in the upper part of the hot water storage tank 16 is pushed out from the hot water discharge pipe 19 to supply hot water.
[0015]
An electric mixing valve 22 is provided in the hot water supply pipe 19. The hot water from the water supply bypass pipe 23 branched from the water supply pipe 20 and the hot water from the hot water discharge pipe 19 are connected to a hot water supply temperature sensor 24 provided downstream thereof. The mixing ratio is adjusted so that the detected temperature becomes a predetermined hot water supply temperature (60 ° C. in this case).
[0016]
Next, the heat pump unit 17 includes a compressor 25, a refrigerant-water heat exchanger 26 as a condenser, an electronic expansion valve 27, and a forced air-cooled evaporator 28, and a heat pump circuit 18 as heating means. A heat pump circulation pump 29 for circulating hot water in the hot water storage tank 16 to the refrigerant-water heat exchanger 26 through the heat pump circulation circuit 21, and carbon dioxide is used as the refrigerant in the heat pump circuit 18. It constitutes a supercritical heat pump cycle. Since carbon dioxide is used as the refrigerant, low-temperature water can be boiled up to a high temperature of about 90 ° C. without an electric heater.
[0017]
Here, the refrigerant-water heat exchanger 26 employs a counter flow system in which the refrigerant and hot water in the hot water storage tank 16 which is heated water are opposed to each other. In the supercritical heat pump cycle, the refrigerant is exchanged during heat exchange. Since it is condensed in the supercritical state, the water to be heated can be efficiently heated to a high temperature so that the temperature difference between the refrigerant-water heat exchanger 20 inlet temperature and the refrigerant outlet temperature becomes constant. By controlling the electronic expansion valve 27 or the compressor 25, the COP (energy consumption efficiency) is 3 when the inlet temperature of the refrigerant-water heat exchanger 26 to be heated is a low temperature of about 5 to 20 ° C. It is possible to heat the water to be heated in a very good state of 0 or more.
[0018]
In this way, the electric power consumed when boiling the hot water in the hot water storage tank 16 is monitored by the wattmeter 9 for each time zone, and the electric energy is used using the power unit price for each time zone stored in the power unit price storage unit 10. Electricity charge X is calculated by the charge calculation unit 11.
[0019]
And if each household supplies hot water, the hot water storage type hot water supply apparatus 1 mixes the hot water stored in the hot water storage tank 16 and the water from the water supply bypass pipe 23 at a constant temperature by the electric mixing valve 22. Hot water. In each household, hot water is adjusted to a desired hot water temperature with the hot water mixing tap 7 and hot water is supplied.
[0020]
At this time, the total water meter 12 adds up the total water usage e for each household, and the hot water usage meter 3 and the usage water meter 5 add up the hot water usage a, b and the usage water volumes c, d for each household. Then, the water rate calculator 14 calculates a water rate from the unit price of water and the total amount of water used e stored in the unit price storage unit 13, and each household from the ratio of the amount of hot water used and the amount of water used for each household. Each water charge Y can be calculated. That is, the water charge Y (V) for the household V is calculated as Y · (a + c) / e, and the water charge Y (W) for the household W is calculated as Y · (b + d) / e. Therefore, it is possible to apportion the water rate accurately to each household individually.
[0021]
30 is an electric energy charge apportioning for calculating an electric energy charge to be distributed to each household from the ratio of the hot water usage of each household detected by the hot water meter 3 and the electric energy charge calculated by the electric energy charge calculation unit 11. In part 30, the electricity charge X (V) apportioned to household V is calculated by X · a / (a + b), and the electricity charge X (W) apportioned to household W is X · b / ( a + b).
[0022]
Since the electricity charge is apportioned according to the ratio of the amount of hot water used, a single hot water storage hot water supply device 1 can be shared by multiple households, and the facility cost of the housing complex can be reduced. At the same time, the electricity charge for hot water supply can be appropriately distributed to each household without unfairness.
[0023]
In this embodiment, an example in which one hot water storage type hot water supply apparatus is shared by two households has been shown. However, the present invention is not limited to this, and one hot water storage type hot water supply apparatus is shared by three or four households. Anyway. In addition, since the upper and lower floor households in the apartment house share one hot water storage type hot water supply device, it is not necessary to raise the heavy hot water storage type hot water supply device to the upper floor. Without limitation, a single hot water storage type hot water supply apparatus may be shared by a plurality of households on the same floor.
[0024]
【The invention's effect】
As described above, according to the present invention, it is possible to share a single hot water storage type hot water supply apparatus among a plurality of households, and it is possible to reduce the facility cost of an apartment house, and to charge the amount of power required for hot water supply , And water charges can be apportioned appropriately to each household without unfairness.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a hot water storage type hot water supply apparatus according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hot water storage type hot water supply apparatus 2 Apartment house 3 Hot water meter 4 Hot water supply pipe 8 Power supply 11 Electricity charge calculation part 30 Electricity charge apportioning part

Claims (1)

時間帯別電灯契約の電源が接続され、沸き上げた温水を貯湯して複数世帯に給湯する貯湯式給湯装置において、前記貯湯式給湯装置から各世帯へ分岐された複数の給湯配管にそれぞれ設けられた各世帯毎の使用湯量を積算する使用湯量計と、前記貯湯式給湯装置から各世帯へ分岐された複数の給水配管にそれぞれ設けられた各世帯毎の使用水量を積算する使用水量計と、各世帯の全ての使用水量を積算する総水量計と、前記貯湯式給湯装置の消費電力を時間帯別に積算する電力計とを設け、
前記貯湯式給湯装置の電力量料金を各世帯毎の使用湯量の比により各世帯に按分し、
各世帯の全ての水道料金を各世帯毎の使用湯量および使用水量の合計の比により各世帯に按分するようにした
ことを特徴とする集合住宅用貯湯式給湯装置の料金按分方法。
In the hot water storage hot water supply system that is connected to the power supply of the lighting contract according to time zone and stores hot water that has been boiled to supply hot water to multiple households, each hot water supply pipe branched from the hot water storage hot water supply apparatus to each household is provided. A hot water meter for integrating the amount of hot water used for each household, and a water meter for integrating the amount of water used for each household provided in each of a plurality of water supply pipes branched from the hot water storage hot water supply device to each household; A total water meter that integrates all the water usage of each household and a power meter that integrates the power consumption of the hot water storage hot water supply system by time zone,
The electricity charge of the hot water storage hot water supply device is apportioned to each household according to the ratio of the amount of hot water used for each household,
All water charges for each household are distributed to each household according to the ratio of the amount of hot water used and the total amount of water used for each household.
A charge apportioning method for a hot water storage hot water supply system for an apartment house.
JP2002370665A 2002-12-20 2002-12-20 Charge apportionment method for hot water storage system for apartment houses Expired - Fee Related JP3747055B2 (en)

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JP5090019B2 (en) * 2007-03-07 2012-12-05 パナソニック株式会社 Hot water storage water heater
JP5220082B2 (en) * 2010-11-01 2013-06-26 三菱電機株式会社 Water heater control device, control system, control program, and control method
JP2013096591A (en) * 2011-10-28 2013-05-20 Sekisui Chem Co Ltd Hot water supply system
JP6103935B2 (en) * 2012-12-28 2017-03-29 三菱電機株式会社 Electricity information providing system, apportioned electric energy calculation

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