JPH067033B2 - Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used therefor - Google Patents
Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used thereforInfo
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- JPH067033B2 JPH067033B2 JP17817788A JP17817788A JPH067033B2 JP H067033 B2 JPH067033 B2 JP H067033B2 JP 17817788 A JP17817788 A JP 17817788A JP 17817788 A JP17817788 A JP 17817788A JP H067033 B2 JPH067033 B2 JP H067033B2
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は蓄冷材を蓄えた蓄冷式保冷庫（以後、記載上の
煩雑さを避けるために、単に保冷庫と呼ぶこともある）
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cold storage type cold storage in which a cold storage material is stored (hereinafter, may be simply referred to as a cold storage to avoid complexity in description).
Regarding
［従来の技術］ 従来、保冷庫に備えられた保冷運転開始後の蓄冷材の残
存保冷可能時間を、客観的に把握するということは行わ
れておらず、人的経験により、主観的に把握するに止ま
っていた。このため、標準条件で想定された蓄冷材の標
準保冷可能時間から保冷運転開始経過時間をを勘案し
て、保冷庫の配送時間等の管理が行われていた。[Prior Art] Conventionally, it has not been objectively grasped the remaining cold storage time of the cold storage material after the start of the cold insulation operation provided in the cold storage, and it is subjectively understood by human experience. I had to stop. Therefore, the delivery time of the cold storage is managed in consideration of the standard cold storage time of the cold storage material assumed under the standard conditions and the elapsed time of the cold storage operation start.
［発明が解決しようとする課題］ しかしながら、蓄冷材の保冷能力には限界があり、外気
温度の変動により、その残存保冷可能時間が変動してし
まうため、標準保冷可能時間に基づく保冷庫の管理で
は、蓄冷材の現実の残存保冷可能時間を客観的に把握す
ることができず、標準保冷可能時間に基づいた画一的な
管理しか行なえないという問題があった。このため、場
合によっては、蓄冷材の温度が上昇して、冷凍製品等の
品質を損なってしまう問題もある。[Problems to be Solved by the Invention] However, there is a limit to the cold storage capacity of the cold storage material, and the remaining cold storage time fluctuates due to fluctuations in the outside air temperature. However, there is a problem that the actual remaining heat retention time of the cold storage material cannot be objectively grasped and only uniform management based on the standard heat retention time can be performed. Therefore, in some cases, there is a problem that the temperature of the cold storage material rises and the quality of the frozen product or the like is impaired.
そこで、本発明の技術的課題は、上記欠点に鑑み、蓄冷
材の残存保冷可能時間を客観的に正確に把握し、弾力的
な保冷庫の管理を行うことが可能な蓄冷式保冷庫及びそ
れに使用される蓄冷材の残存保冷可能時間の演算及び表
示方法を提供するものである。Therefore, the technical problem of the present invention is, in view of the above drawbacks, objectively and accurately grasp the remaining cold storage time of the cold storage material, and a cold storage cold storage box capable of elastically managing the cold storage box and it The present invention provides a method for calculating and displaying the remaining coolable time of the cold storage material used.
［課題を解決するための手段］ 本発明によれば、予め定められた初期吸熱量Ｑｏ（ｋｃ
ａｌ）を持つ蓄冷材を利用して、予め定められた断熱性
能Ｋ・Ａ（ｋｃａｌ／ｈ℃）を有する保冷庫の庫内の冷
却を行う蓄冷式保冷庫において、前記蓄冷式保冷庫の外
部の空気温度Ｔｅ（℃）を検出するための外気温度セン
サと、前記蓄冷式保冷庫の内部の空気温度Ｔｉ（℃）を
検出するための庫内温度センサと、前記外気及び庫内温
度センサの検出値を所定時間間隔τ（ｈ）毎に読込み、
前記空気温度Ｔｅと前記空気温度Ｔｉの温度差ΔＴ
（℃）を求め、前記断熱性能Ｋ・Ａに該温度差ΔＴを掛
けることにより、前記蓄冷材の単位時間当りの消費熱量
ｑ（ｋｃａｌ／ｈ）を求め、この単位時間当りの消費熱
量ｑを前記蓄冷材を前記保冷庫に設置した時からの経過
時間ｎ・τで積分する（ｑ（τ）・τ＋ｑ（２・τ）・
τ＋…＋ｑ（ｎ・τ）・τ）ことにより、前記蓄冷材の
現時点での消費熱量Ｑｃ（ｎ・τ）を求め、前記消費熱
量Ｑｃを前記初期吸熱量Ｑｏから引くことにより、前記
蓄冷材の残りの吸熱量Ｑｒ（ｋｃａｌ）を求め、該残り
の吸熱量Ｑｒを前記単位時間当りの消費熱量ｑで割るこ
とにより、前記蓄冷材の残存保冷可能時間ｔｅ（ｈ）を
求める演算手段と、前記残存保冷可能時間ｔｅを表示す
る表示手段と を有することを特徴とする蓄冷式保冷庫が得られる。[Means for Solving the Problem] According to the present invention, a predetermined initial heat absorption amount Qo (kc
a) in a cold storage cooler that cools the inside of the cold storage having a predetermined heat insulation performance KA (kcal / h ° C) by using a cold storage material having Of the outside air temperature sensor for detecting the air temperature Te (° C.), the inside temperature sensor for detecting the air temperature Ti (° C.) inside the cold storage cool box, and the outside air and inside temperature sensors Read the detected value at every predetermined time interval τ (h),
Temperature difference ΔT between the air temperature Te and the air temperature Ti
(° C.), and the heat insulation performance K · A is multiplied by the temperature difference ΔT to obtain the heat consumption amount q (kcal / h) of the regenerator material per unit time, and the heat consumption amount q per unit time is Integrate with the elapsed time n · τ from the time when the cold storage material is installed in the cold storage (q (τ) · τ + q (2 · τ) ·
τ + ... + q (n · τ) · τ) determines the current heat consumption Qc (n · τ) of the regenerator material, and subtracts the consumed heat amount Qc from the initial heat absorption amount Qo to obtain the regenerator material. Of the remaining heat absorption amount Qr (kcal) of the above, and by dividing the remaining heat absorption amount Qr by the heat consumption amount q per unit time, calculating means for calculating the remaining coolable time te (h) of the regenerator material, And a display unit that displays the remaining coolable time te.
さらに、本発明によれば、予め定められた初期吸熱量Ｑ
ｏ（ｋｃａｌ）を持つ蓄冷材を利用して、予め定められ
た断熱性能Ｋ・Ａ（ｋｃａｌ／ｈ℃）を有する保冷庫の
庫内の冷却を行う場合に、前記蓄冷材を前記保冷庫に設
置した後の前記蓄冷材の使用可能時間を演算し表示する
方法において、所定時間間隔τ（ｈ）毎に、前記保冷庫
の外部の空気温度Ｔｅ（℃）と前記保冷庫の内部の空気
温度Ｔｉ（℃）とを読込み、前記保冷庫の外部の空気温
度Ｔｅと前記保冷庫の内部の空気温度Ｔｉの温度差ΔＴ
＝Ｔｅ−Ｔｉ（℃）を求め、前記断熱性能Ｋ・Ａに該温
度差ΔＴを掛けることにより、前記蓄冷材の単位時間当
りの消費熱量ｑ＝Ｋ・Ａ・ΔＴを（ｋｃａｌ／ｈ）を求
め、該単位時間当りの消費熱量ｑを前記蓄冷材を前記保
冷庫に設置した時からの経過時間ｎ・τで積分する（ｑ
（τ）・τ＋ｑ（２・τ）・τ＋…＋ｑ（ｎ・τ）・
τ）ことにより、前記蓄冷材の現時点での消費熱量Ｑｃ
（ｎ・τ）を求め、前記消費熱量Ｑｃを前記初期吸熱量
Ｑｏから引くことにより、前記蓄冷材の残りの吸熱量Ｑ
ｒ＝Ｑｏ−Ｑｃ（ｋｃａｌ）を求め、該残りの吸熱量Ｑ
ｒを前記単位時間当りの消費熱量ｑで割ることにより、
前記蓄冷材の残存保冷可能時間ｔｅ＝Ｑｒ÷ｑ（ｈ）を
求め、前記残存保冷可能時間ｔｅを表示するステップを
有することを特徴とする保冷庫に使用される蓄冷材の残
存保冷可能時間の演算及び表示方法が得られる。Further, according to the present invention, a predetermined initial heat absorption amount Q
When the inside of a cold storage having a predetermined heat insulation performance K · A (kcal / h ° C) is cooled by using the cold storage having o (kcal), the cold storage is transferred to the cold storage. In a method of calculating and displaying the usable time of the regenerator material after installation, the air temperature Te (° C) outside the cool box and the air temperature inside the cool box are set at predetermined time intervals τ (h). The temperature difference ΔT between the air temperature Te outside the cool box and the air temperature Ti inside the cool box is read by reading Ti (° C.).
= Te−Ti (° C.) and multiplying the heat insulation performance K · A by the temperature difference ΔT, the heat consumption amount q = K · A · ΔT of the cold storage material per unit time is calculated as (kcal / h). Then, the heat consumption amount q per unit time is integrated with the elapsed time n · τ from the time when the regenerator material is installed in the cool box (q
(Τ) ・ τ + q (2 ・ τ) ・ τ + ... + q (n ・ τ) ・
τ), the current heat consumption Qc of the cold storage material
(N · τ) is calculated and the consumed heat amount Qc is subtracted from the initial absorbed heat amount Qo to obtain the remaining absorbed heat amount Q of the regenerator material.
r = Qo−Qc (kcal) is obtained, and the remaining heat absorption Q
By dividing r by the heat consumption q per unit time,
The remaining coolable time te = Qr ÷ q (h) of the cold storage material is obtained, and the remaining coolable time te is displayed. A calculation and display method can be obtained.
［実施例］ 次に、本発明の実施例を図面を参照して説明する。[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.
第１図に示すように、１は保冷庫（図示しない）の外気
温度Ｔｅを検出する外気温度センサ、２は保冷庫内の空
気温度Ｔｉを検出する庫内温度センサであり、保冷庫内
に内蔵されたマイクロコンピュータ３は、これら外気温
度センサ１及び庫内温度センサ２からの検出信号を受
け、これに基づいて蓄冷材の残存保冷可能時間ｔｅを演
算し、液晶表示器４に、その残存保冷可能時間ｔｅを表
示する。As shown in FIG. 1, 1 is an outside air temperature sensor that detects an outside air temperature Te of a cool box (not shown), and 2 is an inside temperature sensor that detects an air temperature Ti in the cool box. The built-in microcomputer 3 receives the detection signals from the outside air temperature sensor 1 and the inside temperature sensor 2, calculates the remaining coolable time te of the regenerator material based on the detection signals, and displays it on the liquid crystal display 4. Displays the cool storage time te.
いま、蓄冷材の最大ストレスとなる庫内空気温度−２０
℃を、冷凍モードに想定し、その保冷時間を１６時間と
して、蓄冷材の重量が選定される。また、外気温度条件
を３５℃とする。Now, the internal air temperature that is the maximum stress of the cold storage material is -20
The weight of the regenerator material is selected by assuming that the temperature is in the freezing mode at 16 ° C. for 16 hours. The outside air temperature condition is 35 ° C.
これより、蓄冷材は保冷庫の内蔵している冷却ユニット
（図示せず）の冷却運転の始動により、冷却完了（凍結
温度以下）まで冷却される。蓄冷材をその凍結温度より
５℃過冷却した場合の蓄冷材の初期吸熱量Ｑｏを下記の
第１式に示す。As a result, the regenerator material is cooled to the completion of cooling (below the freezing temperature) by starting the cooling operation of the cooling unit (not shown) incorporated in the cool box. The initial heat absorption amount Qo of the regenerator material when supercooling the regenerator material by 5 ° C. from its freezing temperature is shown in the following first equation.
Ｑｏ＝ＭＬ＋５ＭＣ(kcal) … ここで、Ｍ：蓄冷材の重量，Ｌ：蓄冷材の融解潜熱(kca
l/kg)，Ｃ：蓄冷材の比熱(kcal/kg℃)である。Qo = ML + 5MC (kcal) ... where M: weight of the regenerator material, L: latent heat of fusion of the regenerator material (kca)
l / kg), C: Specific heat of the regenerator material (kcal / kg ° C).
次に、保冷運転が開始されると、保冷庫内への外気から
の侵入熱量が、単位時間当りの消費熱量ｑとして、時々
刻々と蓄冷材の初期吸熱量Ｑｏを消費する。この単位時
間当りの消費熱量ｑは下記の第２式で表される。Next, when the cold storage operation is started, the amount of heat entering the cold storage from the outside air consumes the initial heat absorption amount Qo of the cold storage material moment by moment as the heat consumption amount q per unit time. The heat consumption q per unit time is expressed by the following second equation.
ｑ＝Ｋ・Ａ・ΔＴ … ここで、Ｋ：保冷庫の熱伝導率(kcal/m2h℃)，Ａ：保冷
庫の表面積（ｍ2），ΔＴ：外気温度Ｔｅと庫内温度Ｔ
ｉの差（℃）。なお、Ｋ・Ａは保冷庫の断熱性能と呼ば
れ、保冷庫の形状により定まる定数であり、現仕様にお
いては、Ｋ・Ａ＝３(kcal/h℃)とする。q = K · A · ΔT Here, K: thermal conductivity of cold storage (kcal / m 2 h ° C), A: surface area of cold storage (m 2 ), ΔT: outside air temperature Te and internal temperature T
Difference of i (° C). Note that K · A is called the heat insulation performance of the cool box, and is a constant determined by the shape of the cool box. In the current specifications, K · A = 3 (kcal / h ° C).
よって、単位時間当りの消費熱量ｑを保冷運転経過時間
で積分した消費熱量Ｑｃを、初期吸熱量Ｑｏから引いた
残りの熱量が、残りの吸熱量Ｑｒとなる。そして、この
残りの吸熱量Ｑｒを現時点の単位時間当りの消費熱量ｑ
で割ることにより、蓄冷材の残存保冷可能時間ｔｅが得
られる。Therefore, the remaining amount of heat obtained by subtracting the amount of heat consumption Qc obtained by integrating the amount of heat consumption q per unit time over the elapsed time for cold storage operation from the initial amount of heat absorption Qo becomes the remaining amount of heat absorption Qr. Then, the remaining heat absorption amount Qr is used as the heat consumption amount q per unit time at the present time.
By dividing by, the remaining coolable time te of the regenerator material can be obtained.
なお、一日の外気温度の変化を、気象データ等から判断
して、その将来の消費熱量を仮想した値で残りの吸熱量
Ｑｒを割ることも可能である。Note that it is also possible to judge the change in the outside air temperature for one day from meteorological data or the like, and divide the remaining heat absorption amount Qr by a value that is a hypothetical amount of future heat consumption.
次に、マイクロコンピュータ３の演算手順を、第２図を
参照して説明する。Next, the calculation procedure of the microcomputer 3 will be described with reference to FIG.
まず、蓄冷材の初期吸熱量Ｑｏ(kcal)と、保冷庫１の断
熱性能Ｋ・Ａとが、上述したように設定され、保冷運転
が開始される(step100)。なお、保冷運転初期時間にお
いては、消費熱量Ｑｃは０である。First, the initial heat absorption amount Qo (kcal) of the cold storage material and the heat insulation performance K · A of the cool box 1 are set as described above, and the cool operation is started (step 100). Note that the heat consumption amount Qc is 0 at the initial time of the cold insulation operation.
保冷開始後、所定時間τの経過を監視する(step101)。
所定時間τの経過後、外気温度Ｔｅ及び庫内温度Ｔｉ
を、外気温度センサ１及び庫内温度センサ２から読込む
(step102)。次に、外気温度Ｔｅ及び庫内温度Ｔｉとの
温度差ΔＴを求める(step103)。求めた温度差ΔＴに断
熱性能Ｋ・Ａを掛けて、単位時間当りの蓄冷材の消費熱
量ｑを求める(step104)。この単位時間当りの消費熱量
ｑを、保冷運転開始時からの経過時間ｎ・τで積分（ｑ
（τ）・τ＋ｑ（２・τ）・τ＋…＋ｑ（ｎ・τ）・
τ）、又は、累積して、現時点での消費熱量Ｑｃ（ｎ・
τ）を求める(step105)。そして、消費熱量Ｑｃを初期
吸熱量Ｑｏから引くことにより、蓄冷材の残りの吸熱量
Ｑｒを求める(step106)。残存保冷可能時間ｔｅを現時
点での単位時間当りの蓄冷材の消費熱量ｑで割ることに
より求める(step107)。最後に、残存保冷可能時間ｔｅ
を数値を以て、液晶表示する(step108)。After the cold preservation is started, the progress of a predetermined time τ is monitored (step 101).
After elapse of a predetermined time τ, the outside air temperature Te and the inside temperature Ti
Is read from the outside air temperature sensor 1 and the inside temperature sensor 2.
(step 102). Next, a temperature difference ΔT between the outside air temperature Te and the inside temperature Ti is obtained (step 103). The obtained temperature difference ΔT is multiplied by the heat insulation performance K · A to obtain the heat consumption amount q of the regenerator material per unit time (step 104). This heat consumption amount q per unit time is integrated by the elapsed time n · τ from the start of the cold insulation operation (q
(Τ) ・ τ + q (2 ・ τ) ・ τ + ... + q (n ・ τ) ・
τ), or cumulatively, the heat consumption amount Qc (n
τ) is calculated (step 105). Then, the heat absorption amount Qc is subtracted from the initial heat absorption amount Qo to obtain the remaining heat absorption amount Qr of the regenerator material (step 106). The remaining coolable time te is calculated by dividing the heat consumption amount q of the regenerator material per unit time at the present time (step 107). Finally, the remaining coolable time te
Is displayed on the liquid crystal with a numerical value (step 108).
なお、以下に揚げる要素をも考慮した残存保冷可能時間
ｔｅの演算を行うことは、本発明の目的に合致すること
は明白である。It should be noted that it is obvious that the calculation of the remaining cold storage possible time te in consideration of the following frying elements is consistent with the object of the present invention.
蓄冷運転の冷却状態に伴う初期吸熱量Ｑｏの変動。Variation of the initial heat absorption amount Qo with the cooling state of the cold storage operation.
保冷運転中の保冷庫のドアの開閉め又は、外気温度の
急変に伴う消費熱量の変動。Changes in the amount of heat consumed due to opening and closing the doors of the cold storage during cold storage operation or due to sudden changes in the outside air temperature.
負荷（収納荷物）の収納量の変化に伴う消費熱量の変
動。Fluctuations in heat consumption due to changes in the amount of load (luggage) stored.
［発明の効果］ 以上の説明から分かるように、本発明によれば、外気か
ら保冷庫内へ侵入する熱量を消費熱量として、リアルタ
イムで客観的に把握して、正確な蓄冷材の残存保冷可能
時間を得ることができるから、弾力的な保冷庫の管理を
行うことが可能となる。[Effects of the Invention] As can be seen from the above description, according to the present invention, the amount of heat that enters the cool box from the outside air can be objectively grasped in real time as the consumed heat amount, and accurate cold storage of the cold storage material can be performed. Since time can be obtained, it is possible to flexibly manage the cool box.
第１図は本発明の実施例に係るブロック図、第２図は第
１図に示すマイクロコンピュータの演算手順を示すフロ
ーチャートである。 １…外気温度センサ、２…庫内温度センサ、３…マイク
ロコンピュータ、４…表示器。FIG. 1 is a block diagram according to an embodiment of the present invention, and FIG. 2 is a flow chart showing a calculation procedure of the microcomputer shown in FIG. DESCRIPTION OF SYMBOLS 1 ... Outside air temperature sensor, 2 ... Chamber temperature sensor, 3 ... Microcomputer, 4 ... Indicator.
Claims (2)
ｌ）を持つ蓄冷材を利用して、予め定められた断熱性能
Ｋ・Ａ（ｋｃａｌ／ｈ℃）を有する蓄冷式保冷庫の庫内
の冷却を行う蓄冷式保冷庫において、 前記蓄冷式保冷庫の外部の空気温度Ｔｅ（℃）を検出す
るための外気温度センサと、 前記蓄冷式保冷庫の内部の空気温度Ｔｉ（℃）を検出す
るための庫内温度センサと、 前記外気及び庫内温度センサの検出値を所定時間間隔τ
（ｈ）毎に読込み、前記空気温度Ｔｅと前記空気温度Ｔ
ｉの温度差ΔＴ（℃）を求め、前記断熱性能Ｋ・Ａに該
温度差ΔＴを掛けることにより、前記蓄冷材の単位時間
当りの消費熱量ｑ（ｋｃａｌ／ｈ）を求め、この単位時
間当りの消費熱量ｑを前記蓄冷材を前記蓄冷式保冷庫に
設置した時からの経過時間ｎ・τで積分する（ｑ（τ）
・τ＋ｑ（２・τ）・τ＋…＋ｑ（ｎ・τ）・τ）こと
により、前記蓄冷材の現時点での消費熱量Ｑｃ（ｎ・
τ）を求め、前記消費熱量Ｑｃを前記初期吸熱量Ｑｏか
ら引くことにより、前記蓄冷材の残りの吸熱量Ｑｒ（ｋ
ｃａｌ）を求め、該残りの吸熱量Ｑｒを前記単位時間当
りの消費熱量ｑで割ることにより、前記蓄冷材の残存保
冷可能時間ｔｅ（ｈ）を求める演算手段と、 前記残存保冷可能時間ｔｅを表示する表示手段と を有することを特徴とする蓄冷式保冷庫。1. A predetermined initial heat absorption amount Qo (kca)
In the cold storage cold storage for cooling the inside of the cold storage cold storage having a predetermined heat insulation performance K · A (kcal / h ° C) by using the cold storage material having l), said cold storage cold storage An outside air temperature sensor for detecting an outside air temperature Te (° C), an inside temperature sensor for detecting an inside air temperature Ti (° C) of the cold storage cooler, the outside air and the inside temperature The detection value of the sensor is set to a predetermined time interval τ
(H) Read every time, the air temperature Te and the air temperature T
The temperature difference ΔT (° C.) of i is calculated, and the heat insulation performance K · A is multiplied by the temperature difference ΔT to calculate the heat consumption amount q (kcal / h) of the regenerator material per unit time. The heat consumption q of is integrated by the elapsed time n · τ from when the regenerator material is installed in the regenerator (q (τ))
· Τ + q (2 · τ) · τ + ... + q (n · τ) · τ), by the current heat consumption Qc (n ·
τ) is calculated and the consumed heat amount Qc is subtracted from the initial heat absorption amount Qo to obtain the remaining heat absorption amount Qr (k
cal), and the remaining heat absorption amount Qr is divided by the heat consumption amount q per unit time to obtain a remaining coolable time te (h) of the regenerator material, and the remaining coolable time te. A cold-storage cold storage characterized by having display means for displaying.
ｌ）を持つ蓄冷材を利用して、予め定められた断熱性能
Ｋ・Ａ（ｋｃａｌ／ｈ℃）を有する蓄冷式保冷庫の庫内
の冷却を行う場合に、前記蓄冷材を前記蓄冷式保冷庫に
設置した後の前記蓄冷材の使用可能時間を演算し表示す
る方法において、 所定時間間隔τ（ｈ）毎に、前記蓄冷式保冷庫の外部の
空気温度Ｔｅ（℃）と前記蓄冷式保冷庫の内部の空気温
度Ｔｉ（℃）とを読込み、 前記蓄冷式保冷庫の外部の空気温度Ｔｅと前記蓄冷式保
冷庫の内部の空気温度Ｔｉの温度差ΔＴ＝Ｔｅ−Ｔｉ
（℃）を求め、 前記断熱性能Ｋ・Ａに該温度差ΔＴを掛けることによ
り、前記蓄冷材の単位時間当りの消費熱量ｑ＝Ｋ・Ａ・
ΔＴを（ｋｃａｌ／ｈ）を求め、 該単位時間当りの消費熱量ｑを前記蓄冷材を前記蓄冷式
保冷庫に設置した時からの経過時間ｎ・τで積分する
（ｑ（τ）・τ＋ｑ（２・τ）・τ＋…＋ｑ（ｎ・τ）
・τ）ことにより、前記蓄冷材の現時点での消費熱量Ｑ
ｃ（ｎ・τ）を求め、 前記消費熱量Ｑｃを前記初期吸熱量Ｑｏから引くことに
より、前記蓄冷材の残りの吸熱量Ｑｒ＝Ｑｏ−Ｑｃ（ｋ
ｃａｌ）を求め、 該残りの吸熱量Ｑｒを前記単位時間当りの消費熱量ｑで
割ることにより、前記蓄冷材の残存保冷可能時間ｔｅ＝
Ｑｒ÷ｑ（ｈ）を求め、 前記残存保冷可能時間ｔｅを表示する ステップを有することを特徴とする蓄冷式保冷庫に使用
される蓄冷材の残存保冷可能時間の演算及び表示方法。2. A predetermined initial heat absorption amount Qo (kca)
When the inside of a cold storage type cold storage having a predetermined heat insulation performance K · A (kcal / h ° C) is cooled by using the cold storage material having l), the cold storage material is used as the cold storage type cold storage. In a method of calculating and displaying the usable time of the regenerator material after it is installed in a refrigerator, at a predetermined time interval τ (h), the air temperature Te (° C) outside the regenerator and the regenerator The air temperature Ti (° C.) inside the refrigerator is read, and the temperature difference ΔT = Te−Ti between the air temperature Te outside the cold storage cool storage and the air temperature Ti inside the cold storage cool storage.
(° C.), and the heat insulation performance K · A is multiplied by the temperature difference ΔT to obtain the heat consumption amount q = K · A · of the regenerator material per unit time.
ΔT is calculated as (kcal / h), and the heat consumption amount q per unit time is integrated by the elapsed time n · τ from the time when the cold storage material is installed in the cold storage cooler (q (τ) · τ + q ( 2 ・ τ) ・ τ +… + q (n ・ τ)
・ Tau), the heat consumption Q of the regenerator material at the present time
c (n · τ) is calculated and the consumed heat amount Qc is subtracted from the initial heat absorption amount Qo to obtain the remaining heat absorption amount Qr = Qo−Qc (k
cal), and the remaining heat absorption amount Qr is divided by the heat consumption amount q per unit time to obtain the remaining coolable time te =
A method of calculating and displaying the remaining coolable time of a cold storage material used in a cold storage type cold storage, comprising the step of obtaining Qr ÷ q (h) and displaying the remaining coolable time te.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17817788A JPH067033B2 (en) | 1988-07-19 | 1988-07-19 | Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17817788A JPH067033B2 (en) | 1988-07-19 | 1988-07-19 | Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0229578A JPH0229578A (en) | 1990-01-31 |
| JPH067033B2 true JPH067033B2 (en) | 1994-01-26 |
Family
ID=16043954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17817788A Expired - Lifetime JPH067033B2 (en) | 1988-07-19 | 1988-07-19 | Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067033B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03162361A (en) * | 1989-11-20 | 1991-07-12 | Toshiba Corp | Gathering device |
| JP3899993B2 (en) * | 2002-04-19 | 2007-03-28 | 株式会社デンソー | Air conditioner for vehicles |
| JP4934349B2 (en) * | 2006-05-12 | 2012-05-16 | 東洋熱工業株式会社 | Operation control method of ice heat storage system |
| JP2017040466A (en) * | 2015-08-21 | 2017-02-23 | 大日本印刷株式会社 | Accommodation unit, temperature management system, and program |
| JP6697736B2 (en) * | 2016-03-25 | 2020-05-27 | パナソニックＩｐマネジメント株式会社 | Cold storage management system and cold storage management device |
| JP2019086220A (en) * | 2017-11-07 | 2019-06-06 | パナソニックＩｐマネジメント株式会社 | Cold storage and cold storage control system |
| JP7165890B2 (en) * | 2018-10-09 | 2022-11-07 | パナソニックＩｐマネジメント株式会社 | Cold storage device |
| CN112651679A (en) * | 2019-10-10 | 2021-04-13 | 中车石家庄车辆有限公司 | Cold chain transportation route planning method and device and computer equipment |
-
1988
- 1988-07-19 JP JP17817788A patent/JPH067033B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0229578A (en) | 1990-01-31 |
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