Chilled water flow meter is a flowmeter that can be utilized to measure low temperature water. Common chilled water flowmeters include electromagnetic move meters, turbine move meters and ultrasonic flow meters. Used in condensing methods, chillers or HVAC. there are multiple flow and vitality measurement alternatives in chilled water techniques and Apure offers a spread of chilled water circulate meter applied sciences which might be particularly properly suited to this difficult utility. Some concerns for drive technology choice embody installation necessities, accuracy requirements and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are straightforward to put in in new or existing systems, provide accurate measurements over a variety of flow regulation, and supply years of trouble-free service in closed-loop hydronic systems.
For installations requiring the highest accuracy, such as price allocation, performance contracting or sub-metering, in-line electromagnetic flowmeters may be the most effective answer. But there is no greatest chilled water flow meter, only the most appropriate one. This is as a result of the main points of each pipeline application are totally different. According to the actual measurement situation, choose probably the most suitable flowmeter. It can save a lot of time and cost.
Depending on the requirements of the chilled water utility, different Apure meters could additionally be more appropriate. Please evaluation the meters beneath or feel free to contact us for an extra conversation.
AYT Digital Liquid Magnetic Flow Meter
Learn More AYT Digital Liquid Magnetic Flow Meter
AFT Split Type Electromagnetic Flow Meter
Learn More AFT Split Type Electromagnetic Flow Meter
ACT Insertion Type Magnetic Flowmeter
Learn More ACT Insertion Type Magnetic Flowmeter
LWGY Liquid Turbine Flow Meter
Learn More LWGY Liquid Turbine Flow Meter
APT Air Vortex Flow Transmitter
Learn More APT Air Vortex Flow Transmitter
TUF Clamp On Ultrasonic Flow Meter
Learn More TUF Clamp On Ultrasonic Flow Meter
FAQ
Where to installation flow meter in chilled water?
In order to ensure the correct measurement of chilled water flow meter, the installation position and technique should be appropriately chosen
Requirements for straight pipe section: it have to be put in horizontally on the pipe (the pipe tilt is less than 5). During set up, the flowmeter axis must be concentric with the pipe axis and move direction ought to be constant. The length of the upstream pipe must be no less than 2D straight pipe part. If the set up site permits, it is suggested that the upstream straight pipe part be 20D and the downstream pipe part be 5D.
Requirements for piping: The inside diameter of the upstream and downstream piping of the installation point is similar as that of the flowmeter.
Requirements on by-pass pipe: In order to make certain that the maintenance of the flowmeter doesn’t affect the normal use of the medium, the cut-off valve (cut-off valve) ought to be put in on the entrance and rear pipes of the turbine flowmeter, and the by-pass pipe must be set on the similar time. Flow control valve to be put in in the downstream of the flow meter, the upstream installed cut-off valve have to be totally open when in use, to avoid the upstream a part of the fluid produced unstable circulate phenomenon.
The necessities of the exterior environment: it is best to put in in the indoor, must be put in within the out of doors, must use sunscreen, rain. Lightning protection measures, so as not to have an effect on service life.
Requirements for impurities in the medium: In order to make sure the service lifetime of the flowmeter, the filter must be put in in front of the straight pipe part of the flowmeter.
Installation web site: The flowmeter ought to be put in in a place that is straightforward to take care of and free from robust electromagnetic interference and thermal radiation.
What are the constraints of electromagnetic flowmeter at low temperature?
The low-temperature resistance of the information.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic move meters measure chilled water flow?
Ultrasonic flowmeter can measure the flow price. The temperature should not exceed -40℃~160℃. Requires a complete check tube and uniform medium. It can show instantaneous circulate fee, circulate rate, cumulative flow price and cumulative running time.
Ultrasonic calorimeter can measure heat provide, move fee and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water circulate fee of a chiller??
The following is our experience sharing: chiller chilled water flow measurement method. We hope will in all probability be useful to you.
1. Chiller into and out of the water stress detection of water pipes
By detecting the return water strain and outlet water strain values. Check the water move price of the chiller underneath the inlet and outlet water stress difference in the random guide of the chiller.
Refer to the corresponding unit water move fee table or chart within the guide. Thus, determine whether the refrigeration system is regular or not.
And by this distinction to discover out which section of the transmission pipe resistance worth is larger. And develop the corresponding rectification plan and motion.
2. Test the fridge return water temperature and water temperature (the unit must be in normal condition)
After half-hour of energy on, verify the system or chilled water system inlet and outlet thermometer by way of the unit control system parameters.
The inlet water temperature and outlet water temperature could be read when the unit is working. The difference should be about 4-6 levels.
If the distinction between the inlet and outlet water temperatures is merely too large, the water system is flowing too little water through the plates. This could trigger the gear to fail to function properly or be damaged.
3. Pump operating present detection
By detecting the working present of the refrigerator water pump, and the rated current for comparison. You can determine whether the precise water circulate is bigger than or less than the rated water move of the pump.
Combined with the previous parameters complete judgment. In order to get an correct chiller system test and evaluation report.
4. Compressor copper tube suction temperature detection (only when the refrigeration operation)
If the refrigerator and freezer is turned on after half-hour
The compressor suction temperature is detected to be decrease than zero degrees. It signifies that the water circulate within the water aspect heat exchanger is not sufficient, which causes the evaporation temperature and evaporation pressure to drop.
and causes Freon to nonetheless evaporate and take in heat from the suction tube flowing from the evaporator to the compressor. It will lead to the compressor suction temperature under zero degrees.
In addition, it’s essential to get rid of the drop of evaporating stress and evaporating temperature attributable to low water temperature setting value.
Non-standard low water temperature unit can be thought of regular so lengthy as the compressor suction superheat degree is 6-8 levels Celsius.
So underneath the conventional water circulate. The compressor suction temperature is usually larger than 0℃. Below this worth, the water system problem must be excluded.
Extended studying:
Solvent circulate meter
Sewage flowmeter
Oil and fuel move meter
Relation between move and straine
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Chilled water flow meter is a flowmeter that can be used to measure low temperature water. Common chilled water flowmeters include electromagnetic move meters, turbine flow meters and ultrasonic flow meters. Used in condensing methods, chillers or HVAC. there are multiple circulate and energy measurement opportunities in chilled water methods and Apure presents a range of chilled water circulate meter technologies which are particularly well suited to this difficult application. Some concerns for drive technology choice include set up requirements, accuracy necessities and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are easy to put in in new or present techniques, provide accurate measurements over a variety of flow regulation, and offer years of trouble-free service in closed-loop hydronic systems.
For installations requiring the best accuracy, such as value allocation, efficiency contracting or sub-metering, in-line electromagnetic flowmeters may be one of the best solution. But there is not a best chilled water move meter, only probably the most acceptable one. This is as a outcome of the primary points of each pipeline application are different. According to the actual measurement scenario, choose the most suitable flowmeter. It can save a lot of time and price.
Depending on the necessities of the chilled water utility, different Apure meters may be extra suitable. Please evaluation the meters below or feel free to contact us for a further dialog.
AYT Digital Liquid Magnetic Flow Meter
Learn More AYT Digital Liquid Magnetic Flow Meter
AFT Split Type Electromagnetic Flow Meter
Learn More AFT Split Type Electromagnetic Flow Meter
ACT Insertion Type Magnetic Flowmeter
Learn More ACT Insertion Type Magnetic Flowmeter
LWGY Liquid Turbine Flow Meter
Learn More LWGY Liquid Turbine Flow Meter
APT Air Vortex Flow Transmitter
Learn More APT Air Vortex Flow Transmitter
TUF Clamp On Ultrasonic Flow Meter
Learn More TUF Clamp On Ultrasonic Flow Meter
FAQ
Where to installation flow meter in chilled water?
In order to make sure the correct measurement of chilled water move meter, the installation position and method should be appropriately chosen
Requirements for straight pipe section: it should be put in horizontally on the pipe (the pipe tilt is less than 5). During set up, the flowmeter axis should be concentric with the pipe axis and circulate course must be constant. The size of the upstream pipe must be no much less than 2D straight pipe part. If the installation website permits, it is recommended that the upstream straight pipe section be 20D and the downstream pipe part be 5D.
Requirements for piping: The internal diameter of the upstream and downstream piping of the installation level is identical as that of the flowmeter.
Requirements on by-pass pipe: In order to make sure that the maintenance of the flowmeter does not affect the traditional use of the medium, the cut-off valve (cut-off valve) ought to be put in on the front and rear pipes of the turbine flowmeter, and the by-pass pipe ought to be set on the identical time. Flow control valve to be put in in the downstream of the flow meter, the upstream installed cut-off valve have to be totally open when in use, to avoid the upstream part of the fluid produced unstable move phenomenon.
The requirements of the exterior environment: it is best to install within the indoor, should be put in in the outside, must use sunscreen, rain. Lightning protection measures, so as not to have an effect on service life.
Requirements for impurities in the medium: In order to make sure the service life of the flowmeter, the filter must be put in in front of the straight pipe part of the flowmeter.
Installation site: The flowmeter should be put in in a place that is easy to take care of and free from sturdy electromagnetic interference and thermal radiation.
What are the constraints of electromagnetic flowmeter at low temperature?
The low-temperature resistance of the information.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic flow meters measure chilled water flow?
Ultrasonic flowmeter can measure the move fee. The temperature mustn’t exceed -40℃~160℃. Requires a whole check tube and uniform medium. It can display instantaneous flow price, circulate fee, cumulative flow price and cumulative working time.
Ultrasonic calorimeter can measure warmth supply, flow rate and temperature monitoring. Air conditioning heating and cooling capacity measurement.
How to measure the chilled water circulate fee of a chiller??
The following is our experience sharing: chiller chilled water circulate measurement approach. We hope it will be helpful to you.
1. Chiller into and out of the water strain detection of water pipes
By detecting the return water stress and outlet water strain values. Check the water move fee of the chiller underneath the inlet and outlet water strain distinction in the random handbook of the chiller.
Refer to the corresponding unit water circulate fee table or chart in the guide. Thus, determine whether or not the refrigeration system is normal or not.
And by this distinction to discover out which section of the transmission pipe resistance worth is higher. And develop the corresponding rectification plan and action.
2. Test the refrigerator return water temperature and water temperature (the unit needs to be in regular condition)
After half-hour of energy on, examine the system or chilled water system inlet and outlet thermometer via the unit management system parameters.
The inlet water temperature and outlet water temperature can be learn when the unit is working. The difference have to be about 4-6 degrees.
If the difference between the inlet and outlet water temperatures is just too large, the water system is flowing too little water through the plates. This may cause the gear to fail to operate properly or be broken.
3. Pump working current detection
By detecting the running present of the refrigerator water pump, and the rated current for comparison. ไดอะแฟรม can determine whether or not the actual water flow is bigger than or less than the rated water circulate of the pump.
Combined with the earlier parameters comprehensive judgment. In order to get an accurate chiller system check and analysis report.
four. Compressor copper tube suction temperature detection (only when the refrigeration operation)
If the fridge and freezer is turned on after 30 minutes
The compressor suction temperature is detected to be decrease than zero levels. It implies that the water circulate within the water side heat exchanger just isn’t enough, which causes the evaporation temperature and evaporation stress to drop.
and causes Freon to nonetheless evaporate and take in warmth from the suction tube flowing from the evaporator to the compressor. It will result in the compressor suction temperature below zero degrees.
In addition, it is necessary to eliminate the drop of evaporating stress and evaporating temperature attributable to low water temperature setting value.
เพรสเชอร์เกจ -standard low water temperature unit may be thought-about regular as lengthy as the compressor suction superheat diploma is 6-8 degrees Celsius.
So underneath the conventional water move. The compressor suction temperature is usually greater than 0℃. Below this value, the water system drawback needs to be excluded.
Extended studying:
Solvent flow meter
Sewage flowmeter
Oil and gasoline circulate meter
Relation between flow and stresse