Water flow gas calorimeter | Gas calorimeter GTSY-4

NegotiableUpdate on 05/06

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Overview

GTSY-4 Water Flow Gas Calorimeter _ Water Flow Calorimeter for Testing High and Low Calorific Values of Pipeline Gas, Gas, Liquefied Petroleum Gas, Coke Oven Gas, Carbonized Gas, Water Gas, Semi Water Gas, and Generator Gas $r $n Measurement Range: 6.7-125.6MJ/m3 $r $n Correction Factor: ≥ 99% r $n Coefficient:>0.5% r $n Accuracy: ≤ 1%

Product Details

Water flow gas calorimeter
Model: GTSY-4

Item number: ZH10277

Product Introduction:
A water flow gas calorimeter (hereinafter referred to as a calorimeter) is an instrument used to measure the high and low calorific values of pipeline gas, liquefied petroleum gas, coke oven gas, carbonized gas, water gas, semi water gas, and generator gas. Currently used for quality inspection of urban gas calorific value, thermal efficiency testing of gas stoves and water heaters, as well as scientific research experiments in the gas industry.
The significance of our company's production of water flow gas calorimeter:
S - represents the structure of a water flow vertical tube bundle heat exchanger
Y - represents precision laboratory use
4- Indicates that the production belongs to the fourth level
Instruments for testing the high and low calorific values of pipeline gas, gas, liquefied petroleum gas, coke oven gas, carbonized gas, water gas, semi water gas, and generator gas
Measurement range: 6.7-125.6MJ/m3
Correction factor: ≥ 99%
Coefficient:>0.5%
Accuracy: ≤ 1%
requirement
The measurement range of the calorimeter is 6.7-125.6MJ/m3.
The correction factor of the calorimeter should be between (0.99~1.01).
The repeatability of the calorimeter should be less than 0.8%.
The calorimeter body should not leak water, the regulator should be able to adjust normally, and the fasteners should be loose.
test conditions
The ambient temperature is (15-30) ℃, which is (1.5-2.5) ℃ higher than the water temperature. The water temperature fluctuation is less than 0.1 ℃, and the room temperature fluctuation during the calibration process does not exceed ± 1 ℃.
Calorimeters and calibration equipment should be placed in an environment affected by thermal radiation and strong air convection.
Indoor ventilation devices are installed to remove smoke.
Before the calibration begins, the water temperature inside the gas humidifier, wet gas flowmeter, and gas stabilizer should reach equilibrium with room temperature, with a temperature difference not exceeding ± 0.5 ℃.
Thermal measurement principle
The principle of measuring calorific value with a water flow type gas calorimeter is to burn a gas sample under constant pressure and equal temperature air conditions, cool the gas products after combustion to the original gas temperature, and cool the water vapor generated by the hydrogen containing components in the gas into condensed water. The total heat is absorbed by the water flow, and the test calorific value of the gas is calculated based on the water volume and water flow temperature rise of the calorimeter. Then, the correction values that need to be considered during the testing process are converted to the gas calorific value under standard conditions, expressed in kJ/m3. The calorific value of gas measured in this way is called the high calorific value, also known as the total calorific value or gross calorific value. The lower heating value of the gas is obtained by subtracting the gasification heat of the condensed water from the higher heating value.
Instrument structure
1. Calorimeter body: The main structure is a combustion heat absorbing cylinder, which is a vertical tube bundle smoke air flow water flow heat exchanger designed with the characteristics of the upper Junkers type. It is composed of 48 circular arrangement of φ 8.5 × 0.5mm copper tubes, with silver welding joints, chrome plating on the surface, and stainless steel shell.
2. Burner and top cover: The burner and top cover are the key components of the calorimeter. Due to the significant differences in combustion characteristics of gases with different calorific values, different diameter nozzles and other components need to be selected. The water flow gas calorimeter burner has 9 nozzles of different diameters, 2 inlet ports of different forms, and 2 top covers of different sizes for users to choose from.
3. Air humidifier: The calorimeter adopts a controlled air humidifier. The air in the humidifier is sprayed with water to reach a humidity of 90-95%, mixed with dry air that has not been humidified, and the air outlet is adjusted to achieve a humidity of 80 ± 5%. There are dry and wet bulb thermometers on the mixer, and the temperature difference between the dry and wet bulb thermometers can be used to determine the humidity of the air.
4. Gas humidifier: The calorimeter is equipped with a closed gas humidifier. The gas is humidified to achieve a wet saturation state, with the purpose of: firstly, keeping the heat measurement process in a wet equilibrium state, and secondly, preventing a significant decrease in water volume in the flow meter during the testing process.
5. Glass rotor flowmeter: The calorimeter is equipped with a glass rotor flowmeter. The pressure of the gas is regulated by a glass rotor flowmeter to control the heat load within the specified range. The characteristic of a glass rotor flowmeter is to adjust the amplitude of gas pressure rise and fall by adjusting the spring with a knob.
6. Voltage regulator: The calorimeter is equipped with a bell shaped water seal voltage regulator. Use the top pressure block to adjust its load and achieve gas pressure regulation.
7. Gas flowmeter: The calorimeter is equipped with a BSD0.5 wet flowmeter (with a division value of 0.02L), and the structure is described in the instruction manual.
8. Standard volume bottle and holder: The calorimeter uses a 2.5-liter glass standard volume bottle. Placed on the volumetric flask holder, with a volume of 2.5 liters between the upper and lower engraved lines. A standard volumetric flask is used for fine calibration of gas flow meters, which can obtain the calibration value of the flow meter reading per revolution.
9. Grade II standard thermometer; The calorimeter is equipped with two Class II standard mercury thermometers. The range is (0~50) ℃, with a division value of 0.1 ℃, used to measure the water temperature at the inlet and outlet of the calorimeter. (Insert depth 6mm away from the homogenizer)
Testing equipment
Precision mercury thermometer with a range of (0-50) ℃ and a division value of 0.1 ℃.
Mercury pressure gauge with a division value of 10pa (0.1mb).
Balance or electronic scale, with a load of 10kg and a division value of ≤ 1g.
Electronic stopwatch with a division value of 0.01s.
Wet gas flowmeter, with a range of 5L and a division value of 0.02L.
Mercury thermometer, with a range of (0-50) ℃ and a division value of 0.2 ℃.
Two water containers with a capacity of ≥ 5L.
High level water tank with a capacity of ≥ 300L.
Measuring cylinder, with a volume of 50ml and a division value of 1ml.
test preparation
Connect the instrument according to Figure 8, keep the main body vertical, clamp the burner inlet pipe tightly, and after ventilation, the pressure on the flow meter is 50mmH2O. Turn off the gas source and keep the pressure unchanged for 5 minutes. Remove the pipe clamp.
Calibrate the wet flowmeter with a standard volumetric flask and obtain the correction factor f1
Adjust the inlet valve to ensure that there is always overflow from the inlet and outlet cups during the testing process.
Select the burner nozzle according to the allowable high calorific value of the tested gas.
Open the gas valve, exhaust air from the burner, turn the flow meter 1-2 times, ignite the burner, adjust the inlet of the burner, and make the flame have a clear inner flame cone.
Adjust the glass rotor flowmeter and bell jar stabilizer to meet the thermal load requirements. (Refer to Appendix 7)
Adjust the air humidifier vent knob to achieve a relative humidity of 76% to 84%.
Install the burner and adjust the inlet valve to achieve a temperature difference of (10-12) ℃ between the inlet and outlet water.
Adjust the exhaust valve to make the exhaust temperature lower than room temperature by (0.5-1.0) ℃.
Instrument testing
The experiment can only begin when the temperature fluctuation at the outlet of the calorimeter is less than 0.2 ℃, and the gaseous water produced by combustion condenses and drips evenly from the condensate pipe, indicating that the calorimeter is in equilibrium.
Read the pressure of the mercury pressure gauge (with an allowable error of 10Pa) and the room temperature (with an allowable error of *. 2 ℃).
Read the gas pressure (allowable error 9.8Pa) and gas temperature (allowable *. 2 ℃) inside the flowmeter.
Read the dry and wet bulb temperatures and flue gas temperature of the air humidifier (with an allowable error of 0.5 ℃).
When the pointer of the calorimeter points to a certain reading, rotate the calorimeter outlet switch valve (0 position) to allow water to flow into the water container and start collecting water.
For every 0.5L movement of the calorimeter pointer, the inlet water temperature (reading up to 0.01 ℃) is immediately read out by the magnifying glass. When reading the outlet water temperature for the 10th time (with an experimental air consumption of 5L), the outlet switching valve is immediately rotated to the other side to weigh the water in the container.
Repeat steps 5-6 three times in a row.
Note: When the relative difference is greater than 0.5%, the test result effect will be retested.