JPH0121417B2 - - Google Patents

Info

Publication number
JPH0121417B2
JPH0121417B2 JP57101883A JP10188382A JPH0121417B2 JP H0121417 B2 JPH0121417 B2 JP H0121417B2 JP 57101883 A JP57101883 A JP 57101883A JP 10188382 A JP10188382 A JP 10188382A JP H0121417 B2 JPH0121417 B2 JP H0121417B2
Authority
JP
Japan
Prior art keywords
water temperature
air conditioning
amount
conditioning load
temperature
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.)
Expired
Application number
JP57101883A
Other languages
Japanese (ja)
Other versions
JPS58219344A (en
Inventor
Yasuo Noda
Kazuyuki Kamimura
Yasushi Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Azbil Corp
Original Assignee
Azbil Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Azbil Corp filed Critical Azbil Corp
Priority to JP57101883A priority Critical patent/JPS58219344A/en
Publication of JPS58219344A publication Critical patent/JPS58219344A/en
Publication of JPH0121417B2 publication Critical patent/JPH0121417B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/50—Load

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は、冷凍機、ボイラ等の熱源機器を用い
る空調装置における熱量演算方法の改良に関する
ものである。 第１図は、熱源機器として冷凍機を用いた場合
の計装図であり、冷凍機R1〜R3により冷却され
た冷水は、ポンプP1〜P3により圧送され、ヘツ
ダH1を介してフアンコイルユニツト等の空調負
荷ALへ供給されたうえ、ヘツダH2を介して冷凍
機R1〜R3へ還流し、冷凍機R1〜R3は、演算回路
等を有する制御器CONにより、起動、停止およ
びベーン開度等が制御されるものとなつている。 また、ヘツダH1からの給水温度を温度センサ
T1により検出すると共に、給水量を流量計Ｆに
より検出する一方、温度センサT2によりヘツダ
H2への還水温度を検出し、これらの検出々力に
基づく次式の演算により空調負荷量すなわち空調
負荷ALにおいて消費される熱量を求め、これに
応じて冷凍機R1〜R3のベーン開度を制御してい
る。 Ｑ＝FV（θ2−θ1）×ｋ ………(1) たゞし、Ｑは求める熱量、FVは流量計の検
出々力、θ1は温度センサT1の検出々力、θ2は温度
センサT2の検出々力、ｋは熱量換算係数である。 しかし、ヘツダH1からの給水がヘツダH2へ還
流するまでの間には、配管および空調負荷ALの
状況に応じて時間差が生じており、第２図のとお
り、流量計Ｆの検出々力FVを反比例する形によ
り時間差Tcが変化するものとなつている。 したがつて、流量を一定としても、現在の給水
温度と還水温度とを(1)式の演算に用いたのでは、
現在の還水温度が現在の給水温度と必ずしも対応
しないため、演算結果に誤差の生ずる欠点を有す
るものとなつている。 本発明は、従来のかゝる欠点を根本的に解消す
る目的を有し、現在の還水温度と、給水量に応じ
て定まる所定時間前の給水温度とを用いて空調負
荷量を求めることにより、演算結果の誤差を排除
した極めて効果的な、熱量演算方法を提供するも
のである。 以下、実施例を示す第３図により本発明の詳細
を説明する。 第３図は、制御器CON内へ収容される熱量演
算回路のブロツク図であり、流量計Ｆの検出々力
FVおよび温度センサT2の検出々力θ2は、直接(1)
式の演算を行なう演算回路CAL1へ与えられてい
るが、温度センサT1の検出々力θ1は、書込回路
WRを介してメモリMMの各アドレスへ時間の経
過に応じて順次に格納されたうえ、読出回路RD
により、検出々力FVに応じて読出アドレスが指
定され、これによつて読出された値が演算回路
CAL1へ与えられるものとなつている。 なお、メモリMMの内容は下表のとおりとなつ
ており、時間の推移に応じて各アドレスの内容が
順次にシフトするものとなつている。 The present invention relates to an improvement in a calorific value calculation method in an air conditioner using heat source equipment such as a refrigerator or a boiler. FIG. 1 is an instrumentation diagram when a refrigerator is used as a heat source device. Chilled water cooled by refrigerators R 1 to R 3 is pumped by pumps P 1 to P 3 , and is sent through a header H 1. The air is supplied to the air conditioning load AL such as the fan coil unit, and is then returned to the refrigerators R1 to R3 via the header H2 . , starting, stopping, vane opening, etc. are controlled. In addition, a temperature sensor detects the water supply temperature from header H1 .
At the same time , the flow meter F detects the amount of water supplied, while the temperature sensor T 2 detects the amount of water supplied to the header.
The temperature of the return water to H 2 is detected, and the air conditioning load amount, that is, the amount of heat consumed in the air conditioning load AL, is determined by calculating the following formula based on these detected forces, and the temperature of the refrigerators R 1 to R 3 is calculated accordingly. Controls the vane opening. Q=FV(θ 2 −θ 1 )×k……(1) Where, Q is the required amount of heat, FV is the detection force of the flowmeter, θ 1 is the detection force of the temperature sensor T 1 , θ 2 is the detection power of the temperature sensor T2 , and k is the heat conversion coefficient. However, there is a time difference between the water supply from header H 1 and the return to header H 2 depending on the status of the piping and air conditioning load AL, and as shown in Figure 2, the detection power of flowmeter F is The time difference Tc is changed by being inversely proportional to FV. Therefore, even if the flow rate is constant, if the current feed water temperature and return water temperature are used in the calculation of equation (1),
Since the current return water temperature does not necessarily correspond to the current feed water temperature, this method has the drawback of causing errors in the calculation results. The present invention aims to fundamentally eliminate such drawbacks of the conventional system, by determining the air conditioning load amount using the current return water temperature and the water supply temperature a predetermined time before, which is determined according to the amount of water supply. , provides an extremely effective calorific value calculation method that eliminates errors in calculation results. The details of the present invention will be explained below with reference to FIG. 3 showing an embodiment. Figure 3 is a block diagram of the calorific value calculation circuit housed in the controller CON, and shows the detection power of the flowmeter F.
The sensing force θ 2 of FV and temperature sensor T 2 is directly (1)
The detected force θ 1 of the temperature sensor T 1 is given to the calculation circuit CAL 1 that calculates the formula, but the detection force θ 1 of the temperature sensor T 1 is given to the writing circuit
It is sequentially stored in each address of memory MM via WR as time passes, and readout circuit RD
The read address is specified according to the detected power FV, and the read value is sent to the arithmetic circuit.
It is given to CAL 1 . Note that the contents of the memory MM are as shown in the table below, and the contents of each address are shifted sequentially according to the passage of time.

【表】【table】

Claims (1)

【特許請求の範囲】[Claims] １ 給水量および給水温度ならびに還水温度に基
づき空調負荷量を求める熱量演算方法において、
予め前記給水量に応じた遅れの所定時間を定め、
現在の前記還水温度とメモリに記憶された前記所
定時間前の前記給水温度とを用いて前記空調負荷
量を求めることを特徴とする熱量演算方法。1. In the calorific value calculation method for calculating the air conditioning load amount based on the water supply amount, supply water temperature, and return water temperature,
A predetermined delay time is determined in advance according to the water supply amount,
A calorific value calculation method, characterized in that the air conditioning load amount is determined using the current return water temperature and the supply water temperature stored in a memory a predetermined time ago.
JP57101883A 1982-06-14 1982-06-14 Calculating method of calorific value Granted JPS58219344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57101883A JPS58219344A (en) 1982-06-14 1982-06-14 Calculating method of calorific value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57101883A JPS58219344A (en) 1982-06-14 1982-06-14 Calculating method of calorific value

Publications (2)

Publication Number Publication Date
JPS58219344A JPS58219344A (en) 1983-12-20
JPH0121417B2 true JPH0121417B2 (en) 1989-04-20

Family

ID=14312332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57101883A Granted JPS58219344A (en) 1982-06-14 1982-06-14 Calculating method of calorific value

Country Status (1)

Country Link
JP (1) JPS58219344A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122199A (en) * 1984-07-06 1986-01-30 Takenaka Komuten Co Ltd Data measuring device of heat exchanger group

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609623Y2 (en) * 1979-04-28 1985-04-04 松下電器産業株式会社 Thermal generator output control device

Also Published As

Publication number Publication date
JPS58219344A (en) 1983-12-20

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