SU834430A1 - Method of measuring single tube circuit hydraulic resistance - Google Patents
Method of measuring single tube circuit hydraulic resistance Download PDFInfo
- Publication number
- SU834430A1 SU834430A1 SU792753781A SU2753781A SU834430A1 SU 834430 A1 SU834430 A1 SU 834430A1 SU 792753781 A SU792753781 A SU 792753781A SU 2753781 A SU2753781 A SU 2753781A SU 834430 A1 SU834430 A1 SU 834430A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- hydraulic resistance
- circuit
- coolant
- temperature
- determining
- Prior art date
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
(54) СПОСОБ ОПРЕДЕЛЕНИЯ ГИДРАВЛИЧЕСКОГО СОПРОТИВЛЕНИЯ КОНТУРА ЕСТЕСТВЕННОЙ ЦИРКУЛЯЦИИ(54) METHOD FOR DETERMINING HYDRAULIC RESISTANCE TO THE CIRCUIT OF THE NATURAL CIRCULATION
1one
Изобретение относитс к энергетике и может быть использовано при определении гидравлического сопротивлени контуров естественной циркул ции теплотехнических систем.The invention relates to energy and can be used in determining the hydraulic resistance of the circuits of natural circulation of heat engineering systems.
Известен способ 1 определени гидравлического сопротивлени контура естественной циркул ции теплоносител путем измерени разности температур последнего между входом и выходом обогреваемого участка контура при двух различных тепловых режимах и последующего определени гидравлического сопротивлени по формулеThe known method 1 determines the hydraulic resistance of the natural circulation circuit of the coolant by measuring the temperature difference of the latter between the inlet and outlet of the heated section of the circuit under two different thermal conditions and then determining the hydraulic resistance by the formula
AP(G)A(T)-G-t-B(T)-G2, где ДР - гидравлическое сопротивление; G - весовой расход теплоносител ;AP (G) A (T) -G-t-B (T) -G2, where DR is flow resistance; G is the weight flow of the coolant;
Т - температура;T is the temperature;
А (Т), В (Т)-коэффициенты, завис щие от режимных параметров.A (T), B (T) are coefficients depending on operating conditions.
Недостатком известного способа вл етс низка точность и узкий диапазон возможности применени .The disadvantage of this method is the low accuracy and narrow range of applicability.
Цель изобретени - повышение точности и расширение возможности применени .The purpose of the invention is to improve the accuracy and expansion of the application.
Указанна цель достигаетс тем, что дополнительно измер ют расход теплон осител , и все измерени провод т в стационарных режимах, а коэффициенты А (Т), В (Т) рассчитывают по формуламThis goal is achieved by additionally measuring the heat consumption of the ositel, and all measurements are carried out in stationary modes, and the coefficients A (T), B (T) are calculated using the formulas
ACT)f,.(uT,|f.-AT,|i)ACT) f,. (UT, | f.-AT, | i)
Qt-CiiQt-Cii
&(Т) & (T)
Qt-QiQt-Qi
где 8 -производна where 8 is a derivative
плотности поdensity
10ten
температуре;temperature;
Н - рассто ние между центрами теплоотвода и теплосъема контура; G - весовой расход теплоносител ; ЛТ - разность температур между выходом и входом обогреваемого участка контура.H is the distance between the centers of the heat sink and the heat removal circuit; G is the weight flow of the coolant; LT - the temperature difference between the output and the input of the heated section of the circuit.
Индексы 1 и 2 соответствуют двум различным стационарным режимам, в которых пррведены измерени .Indexes 1 and 2 correspond to two different stationary modes in which measurements were taken.
Дл применени предлагаемого способа определени гидравлического сопротивлени контура естественной циркул ции в действующих теплотехнических устройствах данные , необходимые дл расчета, можно получить непосредственно во врем эксплуатации с помощью обычно имеющихс в таких устройствах измерителей температуры и расхода .In order to apply the proposed method for determining the hydraulic resistance of the natural circulation circuit in operating thermal engineering devices, the data necessary for the calculation can be obtained directly during operation with the help of commonly used temperature and flow meters in such devices.
Применение предлагаемого способа позволит существенно повысить точность определени гидравлического сопротивлени контура естественной циркул ции. The application of the proposed method will significantly improve the accuracy of determining the hydraulic resistance of the natural circulation circuit.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792753781A SU834430A1 (en) | 1979-04-13 | 1979-04-13 | Method of measuring single tube circuit hydraulic resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792753781A SU834430A1 (en) | 1979-04-13 | 1979-04-13 | Method of measuring single tube circuit hydraulic resistance |
Publications (1)
Publication Number | Publication Date |
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SU834430A1 true SU834430A1 (en) | 1981-05-30 |
Family
ID=20822506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU792753781A SU834430A1 (en) | 1979-04-13 | 1979-04-13 | Method of measuring single tube circuit hydraulic resistance |
Country Status (1)
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SU (1) | SU834430A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102661845B (en) * | 2012-05-10 | 2015-04-22 | 华北电力大学 | Visualized narrow rectangular natural circulation system |
-
1979
- 1979-04-13 SU SU792753781A patent/SU834430A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102661845B (en) * | 2012-05-10 | 2015-04-22 | 华北电力大学 | Visualized narrow rectangular natural circulation system |
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