KR101609677B1 - 공진주파수를 이용한 천연가스의 발열량 측정장치 - Google Patents
공진주파수를 이용한 천연가스의 발열량 측정장치 Download PDFInfo
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- KR101609677B1 KR101609677B1 KR1020150097209A KR20150097209A KR101609677B1 KR 101609677 B1 KR101609677 B1 KR 101609677B1 KR 1020150097209 A KR1020150097209 A KR 1020150097209A KR 20150097209 A KR20150097209 A KR 20150097209A KR 101609677 B1 KR101609677 B1 KR 101609677B1
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- calorific value
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/014—Resonance or resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/021—Gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/021—Gases
- G01N2291/0217—Smoke, combustion gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/102—Number of transducers one emitter, one receiver
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- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
도 2는 본 발명에 따른 측정챔버의 상세 구성도,
도 3은 본 발명을 설명하기 위한 비열(K)과 음속의 상관 그래프,
도 4은 본 발명에 따른 공진주파수를 이용한 천연가스의 발열량 측정장치의 제어 수순이다.
12: 유입구 12: 유출구
14,15: 반구형몸체
16: 정밀온도센서 20: 음파출력부
30: 음파가변발생부 40: 음파수신부
50: 증폭부 60: 제어부
Claims (4)
- 내부에 구형태의 공간부(11)를 가지도록 형성되고, 천연가스(G)가 유입되는 유입구(14)와, 유입된 천연가스가 유출되는 유출구(15)가 천공 형성되며, 상기 공간부의 일측에는 음파출력부(20)가 설치되고, 이에 대향되는 반대 측에는 음파수신부(40)가 설치되는 측정챔버(10);
가청 주파수 범위를 가지는 음향을 공간부(11)로 출력하는 음파출력부(20);
상기 음파출력부(20)로 가청 주파수 대역의 음파를 순차적으로 가변하여 출력하여 주는 음파가변발생부(30);
상기 공간부(11)를 통해 전송되어 오는 음향를 수신하는 음파수신부(40);
상기 음파수신부(40)로부터 수신된 미약한 신호를 증폭하는 증폭부(50); 및
상기 음파가변발생부(30)로 가청주파수 대역의 주파수를 선형적으로 또 순차적으로 발생하도록 명령 제어하고, 상기 증폭부(50)를 통하여 입력되는 수신 음파 주파수 중 공진이 최대한 일어나는 공진주파수를 측정 검출하며, 상기 측정된 공진주파수를 이용하여 챔버 공간부(11) 내부에 투입된 천연가스의 음속을 산출하고, 산출된 음속을 회귀분석식에 대입하여 천연가스(G)의 발열량을 산출하는 제어부(60)를 포함하고;
상기 제어부(60)는 아래의 수식을 이용하여 천연가스의 발열량을 산출하는 것을 특징으로 하는 공진주파수를 이용한 천연가스의 발열량 측정장치.
여기서, ρstd=표준밀도, Pstd=표준압력, R=기체상수, Tstd=표준온도, k=비열비, Mw=몰질량, Hm=질량 발열량, Hv=체적 발열량임. - 삭제
- 삭제
- 삭제
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KR1020150097209A KR101609677B1 (ko) | 2015-07-08 | 2015-07-08 | 공진주파수를 이용한 천연가스의 발열량 측정장치 |
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KR1020150097209A KR101609677B1 (ko) | 2015-07-08 | 2015-07-08 | 공진주파수를 이용한 천연가스의 발열량 측정장치 |
Publications (1)
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KR101609677B1 true KR101609677B1 (ko) | 2016-04-07 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11231198B2 (en) * | 2019-09-05 | 2022-01-25 | Trane International Inc. | Systems and methods for refrigerant leak detection in a climate control system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002522104A (ja) | 1998-08-03 | 2002-07-23 | ジェームズ アール モールト | 吐息ガス質量の測定を用いた呼吸ガス分析方法および装置 |
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002522104A (ja) | 1998-08-03 | 2002-07-23 | ジェームズ アール モールト | 吐息ガス質量の測定を用いた呼吸ガス分析方法および装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11231198B2 (en) * | 2019-09-05 | 2022-01-25 | Trane International Inc. | Systems and methods for refrigerant leak detection in a climate control system |
US11971183B2 (en) | 2019-09-05 | 2024-04-30 | Trane International Inc. | Systems and methods for refrigerant leak detection in a climate control system |
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