Chilled water circulate meter is a flowmeter that can be used to measure low temperature water. Common chilled water flowmeters embrace electromagnetic flow meters, turbine move meters and ultrasonic flow meters. Used in condensing systems, chillers or HVAC. there are multiple move and vitality measurement opportunities in chilled water techniques and Apure presents a spread of chilled water circulate meter technologies which would possibly be particularly well suited to this difficult software. Some issues for drive technology choice include installation requirements, accuracy necessities and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are straightforward to install in new or present methods, present correct measurements over a variety of circulate regulation, and provide years of trouble-free service in closed-loop hydronic techniques.
For installations requiring the highest accuracy, corresponding to cost allocation, efficiency contracting or sub-metering, in-line electromagnetic flowmeters may be the best solution. But there is not any best chilled water move meter, only essentially the most acceptable one. This is as a end result of the details of every pipeline utility are completely different. According to the actual measurement scenario, select essentially the most appropriate flowmeter. It can save plenty of time and price.
Depending on the necessities of the chilled water utility, other Apure meters may be more suitable. Please review the meters beneath or be happy to contact us for a further 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 circulate meter in chilled water?
In order to ensure the correct measurement of chilled water move meter, the installation position and technique should be accurately chosen
Requirements for straight pipe section: it should be installed 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 flow path must be consistent. The size of the upstream pipe ought to be a minimum of 2D straight pipe part. If the installation site permits, it is suggested that the upstream straight pipe part be 20D and the downstream pipe part be 5D.
Requirements for piping: The inner diameter of the upstream and downstream piping of the set up point is the same as that of the flowmeter.
Requirements on by-pass pipe: In order to guarantee that the maintenance of the flowmeter doesn’t affect the normal use of the medium, the cut-off valve (cut-off valve) must be installed on the entrance and rear pipes of the turbine flowmeter, and the by-pass pipe ought to be set at the identical time. Flow control valve to be put in in the downstream of the flow meter, the upstream put in cut-off valve have to be absolutely open when in use, to keep away from the upstream a half of the fluid produced unstable circulate phenomenon.
The requirements of the exterior surroundings: it’s best to put in within the indoor, have to be put in within the outdoor, should use sunscreen, rain. Lightning safety measures, in order to not have an effect on service life.
Requirements for impurities in the medium: In order to ensure the service life of the flowmeter, the filter should be installed in entrance of the straight pipe part of the flowmeter.
Installation website: The flowmeter should be put in in a place that is easy to maintain and free from strong electromagnetic interference and thermal radiation.
What are the limitations of electromagnetic flowmeter at low temperature?
The low-temperature resistance of the info.
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 complete check tube and uniform medium. It can show instantaneous circulate price, circulate rate, cumulative move rate and cumulative operating time.
Ultrasonic calorimeter can measure warmth provide, move rate and temperature monitoring. Air conditioning heating and cooling capacity measurement.
How to measure the chilled water move rate of a chiller??
The following is our expertise sharing: chiller chilled water flow measurement approach. We hope it goes to be useful to you.
1. Chiller into and out of the water stress detection of water pipes
By detecting the return water pressure and outlet water strain values. Check the water move fee of the chiller under the inlet and outlet water pressure distinction within the random handbook of the chiller.
Refer to the corresponding unit water move rate desk or chart within the manual. Thus, determine whether or not the refrigeration system is normal or not.
And by this difference to discover out which section of the transmission pipe resistance value is greater. And develop the corresponding rectification plan and action.
2. Test the fridge return water temperature and water temperature (the unit must be in normal condition)
After half-hour of energy on, check the system or chilled water system inlet and outlet thermometer by way of the unit management system parameters.
The inlet water temperature and outlet water temperature could be learn when the unit is working. The difference must be about 4-6 degrees.
If the distinction between the inlet and outlet water temperatures is too large, the water system is flowing too little water via the plates. This might trigger the tools to fail to function properly or be broken.
three. Pump working current detection
By detecting the operating current of the fridge water pump, and the rated current for comparison. You can decide whether the actual water move is greater than or lower than the rated water flow of the pump.
Combined with the earlier parameters comprehensive judgment. In order to get an correct chiller system take a look at and analysis report.
4. 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 0 levels. It means that the water flow in the water aspect heat exchanger just isn’t sufficient, which causes the evaporation temperature and evaporation stress to drop.
and causes Freon to still evaporate and take up heat from the suction tube flowing from the evaporator to the compressor. It will lead to the compressor suction temperature beneath zero degrees.
In addition, it’s necessary to get rid of the drop of evaporating strain and evaporating temperature attributable to low water temperature setting worth.
Non-standard low water temperature unit could be thought of normal as lengthy as the compressor suction superheat diploma is 6-8 degrees Celsius.
So under the conventional water flow. The compressor suction temperature is generally greater than 0℃. Below this value, the water system drawback needs to be excluded.
Extended studying:
Solvent circulate meter
Sewage flowmeter
Oil and fuel move meter
Relation between flow and straine
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Chilled water circulate meter is a flowmeter that can be used to measure low temperature water. Common chilled water flowmeters embody electromagnetic flow meters, turbine circulate meters and ultrasonic move meters. Used in condensing methods, chillers or HVAC. there are a number of circulate and power measurement opportunities in chilled water systems and Apure presents a range of chilled water move meter technologies which might be particularly well suited for this challenging application. Some concerns for drive technology selection include set up requirements, accuracy requirements and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are easy to put in in new or present methods, provide accurate measurements over a wide range of flow regulation, and offer years of trouble-free service in closed-loop hydronic systems.
For installations requiring the very best accuracy, corresponding to price allocation, performance contracting or sub-metering, in-line electromagnetic flowmeters could additionally be the best solution. But there is not any best chilled water flow meter, only the most appropriate one. This is as a end result of the major points of each pipeline utility are totally different. According to the actual measurement situation, choose the most appropriate flowmeter. It can save lots of time and cost.
Depending on the requirements of the chilled water utility, other Apure meters may be more suitable. Please review the meters under or feel free to contact us for an additional 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 set up circulate meter in chilled water?
In order to ensure the correct measurement of chilled water circulate meter, the installation place and methodology have to be accurately selected
Requirements for straight pipe section: it should be put in horizontally on the pipe (the pipe tilt is lower than 5). During installation, the flowmeter axis ought to be concentric with the pipe axis and flow path should be constant. The length of the upstream pipe ought to be no much less than 2D straight pipe part. If the set up site permits, it is strongly recommended that the upstream straight pipe part be 20D and the downstream pipe section be 5D.
Requirements for piping: The internal diameter of the upstream and downstream piping of the installation point is the same as that of the flowmeter.
Requirements on by-pass pipe: In order to ensure 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 entrance and rear pipes of the turbine flowmeter, and the by-pass pipe should be set on the same time. Flow control valve to be installed within the downstream of the circulate meter, the upstream put in cut-off valve must be fully open when in use, to avoid the upstream part of the fluid produced unstable flow phenomenon.
The requirements of the exterior surroundings: it is best to install within the indoor, have to be installed in the out of doors, should use sunscreen, rain. Lightning safety measures, in order to not affect service life.
Requirements for impurities within the medium: In order to make sure the service lifetime of the flowmeter, the filter ought to be put in in front of the straight pipe section of the flowmeter.
Installation web site: The flowmeter ought to be put in in a place that’s easy to keep up 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 info.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic circulate meters measure chilled water flow?
Ultrasonic flowmeter can measure the move fee. The temperature mustn’t exceed -40℃~160℃. Requires an entire take a look at tube and uniform medium. It can show instantaneous move fee, flow rate, cumulative move price and cumulative running time.
Ultrasonic calorimeter can measure warmth provide, flow price and temperature monitoring. Air conditioning heating and cooling capacity measurement.
How to measure the chilled water move rate of a chiller??
The following is our expertise sharing: chiller chilled water move measurement method. We hope it goes to 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 stress values. Check the water move rate of the chiller under the inlet and outlet water pressure distinction in the random manual of the chiller.
Refer to the corresponding unit water circulate fee desk or chart in the guide. Thus, decide whether the refrigeration system is normal or not.
And by this difference to determine which section of the transmission pipe resistance value is greater. And develop the corresponding rectification plan and motion.
2. Test the fridge return water temperature and water temperature (the unit needs to be in regular condition)
After 30 minutes of energy on, examine the system or chilled water system inlet and outlet thermometer by way of the unit management system parameters.
The inlet water temperature and outlet water temperature could be read when the unit is running. The difference have to be about 4-6 levels.
If the difference between the inlet and outlet water temperatures is simply too large, the water system is flowing too little water by way of the plates. This might cause the tools to fail to function correctly or be damaged.
three. Pump running current detection
By detecting the operating current of the refrigerator water pump, and the rated current for comparison. You can determine whether the actual water circulate is larger than or lower than the rated water flow of the pump.
Combined with the previous parameters complete judgment. In order to get an correct chiller system test and analysis report.
four. Compressor copper tube suction temperature detection (only when the refrigeration operation)
If the refrigerator and freezer is turned on after 30 minutes
The compressor suction temperature is detected to be decrease than 0 levels. It signifies that the water circulate in the water side heat exchanger just isn’t enough, which causes the evaporation temperature and evaporation strain to drop.
and causes Freon to still evaporate and take in heat from the suction tube flowing from the evaporator to the compressor. It will result in the compressor suction temperature under 0 degrees.
In addition, it’s necessary to remove the drop of evaporating stress and evaporating temperature attributable to low water temperature setting worth.
Non-standard low water temperature unit may be thought of regular so lengthy as the compressor suction superheat diploma is 6-8 levels Celsius.
So underneath the normal water circulate. The compressor suction temperature is mostly greater than 0℃. Below this worth, the water system downside must be excluded.
Extended studying:
Solvent move meter
Sewage flowmeter
Oil and fuel flow meter
Relation between flow and stresse