Chilled water flow meter is a flowmeter that can be utilized to measure low temperature water. Common chilled water flowmeters embrace electromagnetic move meters, turbine flow meters and ultrasonic move meters. Used in condensing systems, chillers or HVAC. there are multiple flow and vitality measurement opportunities in chilled water methods and Apure offers a range of chilled water circulate meter technologies which might be significantly nicely fitted to this difficult application. Some considerations for drive expertise selection include set up necessities, accuracy requirements and upkeep implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are easy to put in in new or current systems, present accurate measurements over a extensive range of circulate regulation, and supply years of trouble-free service in closed-loop hydronic systems.
For installations requiring the very best accuracy, similar to price allocation, performance contracting or sub-metering, in-line electromagnetic flowmeters may be the most effective resolution. But there is no best chilled water move meter, solely the most acceptable one. This is because the small print of each pipeline application are completely different. According to the actual measurement state of affairs, choose the most suitable flowmeter. It can save plenty of time and price.
Depending on the necessities of the chilled water utility, other Apure meters may be more appropriate. Please evaluate the meters below or be at liberty 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 flow meter in chilled water?
In order to ensure the correct measurement of chilled water circulate meter, the installation place and methodology should be appropriately chosen
Requirements for straight pipe part: it should be put in horizontally on the pipe (the pipe tilt is lower than 5). During set up, เกจอาร์กอน must be concentric with the pipe axis and flow course should be constant. The length of the upstream pipe should be no much less than 2D straight pipe section. If the set up site permits, it is suggested that the upstream straight pipe section be 20D and the downstream pipe section be 5D.
Requirements for piping: The inside diameter of the upstream and downstream piping of the set up level is similar as that of the flowmeter.
Requirements on by-pass pipe: In order to ensure that the maintenance of the flowmeter does not affect the conventional 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 ought to be set on the same time. Flow control valve to be put in within the downstream of the circulate meter, the upstream installed cut-off valve must be absolutely open when in use, to avoid the upstream part of the fluid produced unstable move phenomenon.
The necessities of the exterior environment: it’s best to install in the indoor, should be installed in 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 make sure the service lifetime of the flowmeter, the filter ought to be installed in entrance of the straight pipe part of the flowmeter.
Installation web site: The flowmeter ought to be put in in a spot that is easy to take care of and free from sturdy electromagnetic interference and thermal radiation.
What are the restrictions of electromagnetic flowmeter at low temperature?
The low-temperature resistance of the data.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic circulate meters measure chilled water flow?
Ultrasonic flowmeter can measure the flow price. The temperature mustn’t exceed -40℃~160℃. Requires an entire take a look at tube and uniform medium. It can show instantaneous move price, move rate, cumulative move price and cumulative running time.
Ultrasonic calorimeter can measure heat supply, flow rate and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water flow rate of a chiller??
The following is our expertise sharing: chiller chilled water circulate measurement approach. We hope it will be useful to you.
1. Chiller into and out of the water pressure detection of water pipes
By detecting the return water strain and outlet water stress values. Check the water flow rate of the chiller underneath the inlet and outlet water strain difference in the random guide of the chiller.
Refer to the corresponding unit water move rate table or chart within the manual. Thus, determine whether the refrigeration system is regular or not.
And by this difference to determine which part of the transmission pipe resistance value is higher. And develop the corresponding rectification plan and action.
2. Test the refrigerator return water temperature and water temperature (the unit must be in regular condition)
After half-hour of power 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 may be learn when the unit is operating. The distinction must be about 4-6 levels.
If the distinction between the inlet and outlet water temperatures is simply too giant, the water system is flowing too little water by way of the plates. This may trigger the gear to fail to operate properly or be broken.
3. Pump working current detection
By detecting the running current of the fridge water pump, and the rated present for comparability. You can decide whether or not the actual water circulate is larger than or lower than the rated water move of the pump.
Combined with the earlier parameters complete judgment. In order to get an accurate chiller system check and evaluation 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 move in the water side heat exchanger isn’t enough, 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 beneath zero degrees.
In addition, it’s necessary to get rid of the drop of evaporating stress and evaporating temperature brought on by low water temperature setting value.
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 beneath the normal water circulate. The compressor suction temperature is usually greater than 0℃. Below this worth, the water system problem must be excluded.
Extended reading:
Solvent flow meter
Sewage flowmeter
Oil and fuel flow meter
Relation between circulate and pressuree
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Chilled water flow meter is a flowmeter that can be utilized to measure low temperature water. Common chilled water flowmeters embody electromagnetic flow meters, turbine move meters and ultrasonic flow meters. Used in condensing systems, chillers or HVAC. there are a quantity of move and energy measurement opportunities in chilled water techniques and Apure offers a spread of chilled water circulate meter applied sciences that are particularly properly suited for this difficult utility. Some concerns for drive expertise choice embody installation necessities, accuracy necessities and upkeep implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are simple to install in new or current techniques, provide accurate measurements over a extensive range of flow regulation, and offer years of trouble-free service in closed-loop hydronic systems.
For installations requiring the best accuracy, corresponding to price allocation, performance contracting or sub-metering, in-line electromagnetic flowmeters may be the most effective resolution. But there isn’t a best chilled water flow meter, only probably the most acceptable one. This is as a outcome of the small print of each pipeline software are completely different. According to the precise measurement state of affairs, select the most suitable flowmeter. It can save lots of time and value.
Depending on the requirements of the chilled water application, different Apure meters may be extra appropriate. Please evaluate the meters under or be happy to contact us for an extra 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 move meter in chilled water?
In order to make sure the accurate measurement of chilled water circulate meter, the installation place and method have to be correctly chosen
Requirements for straight pipe section: it have to be installed horizontally on the pipe (the pipe tilt is less than 5). During installation, the flowmeter axis ought to be concentric with the pipe axis and move direction ought to be consistent. 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 suggested that the upstream straight pipe section be 20D and the downstream pipe section be 5D.
Requirements for piping: The inner 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 guarantee that the upkeep of the flowmeter does not have an result on 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 at the identical time. Flow control valve to be put in within the downstream of the flow meter, the upstream put in cut-off valve must be fully open when in use, to keep away from the upstream part of the fluid produced unstable flow phenomenon.
The necessities of the exterior surroundings: it is best to install in the indoor, should be put in within the outdoor, 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 life of the flowmeter, the filter ought to be installed in front of the straight pipe part of the flowmeter.
Installation website: The flowmeter must be installed in a spot that is straightforward to take care of 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 information.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic circulate meters measure chilled water flow?
Ultrasonic flowmeter can measure the circulate fee. The temperature shouldn’t exceed -40℃~160℃. Requires a complete test tube and uniform medium. It can show instantaneous circulate rate, circulate rate, cumulative circulate fee and cumulative working time.
Ultrasonic calorimeter can measure heat provide, move rate and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water flow rate of a chiller??
The following is our experience sharing: chiller chilled water move measurement technique. We hope it will be helpful to you.
1. Chiller into and out of the water pressure detection of water pipes
By detecting the return water pressure and outlet water stress values. Check the water move price of the chiller under the inlet and outlet water stress difference within the random guide of the chiller.
Refer to the corresponding unit water flow fee table or chart in the manual. Thus, decide whether or not the refrigeration system is regular or not.
And by this distinction to determine which part of the transmission pipe resistance worth is higher. And develop the corresponding rectification plan and action.
2. Test the fridge 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 through the unit control system parameters.
The inlet water temperature and outlet water temperature may be learn when the unit is running. The distinction must be about 4-6 levels.
If the distinction between the inlet and outlet water temperatures is too massive, the water system is flowing too little water by way of the plates. This might cause the tools to fail to function properly or be damaged.
3. Pump running current detection
By detecting the working present of the fridge water pump, and the rated current for comparison. You can determine whether the actual water circulate is greater than or lower than the rated water circulate of the pump.
Combined with the earlier parameters comprehensive 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 30 minutes
The compressor suction temperature is detected to be decrease than zero levels. It signifies that the water move within the water side heat exchanger just isn’t sufficient, which causes the evaporation temperature and evaporation strain to drop.
and causes Freon to nonetheless 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 levels.
In addition, it’s essential to remove the drop of evaporating strain and evaporating temperature caused by low water temperature setting worth.
Non-standard low water temperature unit can be thought-about normal so lengthy as the compressor suction superheat degree is 6-8 levels Celsius.
So underneath the conventional water flow. The compressor suction temperature is generally higher than 0℃. Below this value, the water system problem needs to be excluded.
Extended studying:
Solvent circulate meter
Sewage flowmeter
Oil and gas circulate meter
Relation between circulate and pressuree