Chilled water flow meter is a flowmeter that can be utilized to measure low temperature water. Common chilled water flowmeters embody electromagnetic circulate meters, turbine circulate meters and ultrasonic move meters. Used in condensing systems, chillers or HVAC. there are a quantity of circulate and vitality measurement opportunities in chilled water methods and Apure offers a spread of chilled water circulate meter technologies which would possibly be significantly properly fitted to this challenging application. Some concerns for drive know-how selection embrace set up necessities, accuracy necessities and maintenance implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are straightforward to install in new or existing methods, present correct measurements over a wide range of circulate regulation, and supply years of trouble-free service in closed-loop hydronic methods.
For installations requiring the best accuracy, similar to price allocation, performance contracting or sub-metering, in-line electromagnetic flowmeters may be the most effective solution. But there isn’t a best chilled water circulate meter, solely essentially the most acceptable one. This is as a result of the small print of each pipeline application are totally different. According to the actual measurement state of affairs, select the most suitable flowmeter. It can save a lot of time and price.
Depending on the necessities of the chilled water application, different Apure meters could also be more appropriate. Please evaluation the meters beneath or be at liberty to contact us for an additional 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 set up flow meter in chilled water?
In order to ensure the correct measurement of chilled water move meter, the set up place and methodology must be correctly selected
Requirements for straight pipe part: it must be installed horizontally on the pipe (the pipe tilt is lower than 5). During set up, the flowmeter axis must be concentric with the pipe axis and flow path ought to be consistent. The size of the upstream pipe should be no less than 2D straight pipe section. If the installation site permits, it is strongly recommended that the upstream straight pipe section 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 level is identical 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 should be set at the identical time. Flow control valve to be installed within the downstream of the move meter, the upstream installed cut-off valve must be totally open when in use, to keep away from the upstream a part of the fluid produced unstable move phenomenon.
The necessities of the external setting: it is best to install within the indoor, have to be put in in the outside, should use sunscreen, rain. Lightning protection measures, in order not to have an effect on service life.
Requirements for impurities in the medium: In order to ensure the service lifetime of the flowmeter, the filter must be put in in entrance of the straight pipe part of the flowmeter.
Installation website: The flowmeter must be put in in a spot that is easy to maintain 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 flow meters measure chilled water flow?
Ultrasonic flowmeter can measure the flow price. The temperature should not exceed -40℃~160℃. Requires an entire check tube and uniform medium. It can show instantaneous move price, circulate rate, cumulative circulate fee and cumulative running time.
Ultrasonic calorimeter can measure warmth provide, circulate fee and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water move rate of a chiller??
The following is our expertise sharing: chiller chilled water circulate measurement technique. 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 pressure values. Check the water move price of the chiller underneath the inlet and outlet water stress distinction within the random manual of the chiller.
Refer to the corresponding unit water flow price table or chart within the handbook. Thus, decide whether or not the refrigeration system is regular or not.
And by this distinction to determine which section of the transmission pipe resistance value is higher. 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 30 minutes of power on, examine the system or chilled water system inlet and outlet thermometer through the unit management system parameters.
The inlet water temperature and outlet water temperature may be read when the unit is operating. The difference have to be about 4-6 degrees.
If the distinction between the inlet and outlet water temperatures is simply too giant, the water system is flowing too little water via the plates. This could cause the equipment to fail to function properly or be damaged.
three. Pump running current detection
By detecting the running present of the fridge water pump, and the rated present for comparison. You can determine whether or not the precise water circulate is larger than or less 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 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 implies that the water move within the water aspect warmth exchanger just isn’t enough, which causes the evaporation temperature and evaporation stress to drop.
and causes Freon to still evaporate and take up warmth from the suction tube flowing from the evaporator to the compressor. It will lead to the compressor suction temperature below zero degrees.
In addition, it is necessary to eliminate the drop of evaporating pressure and evaporating temperature caused by low water temperature setting value.
Non-standard low water temperature unit can be thought of normal as long as the compressor suction superheat degree is 6-8 degrees Celsius.
So underneath the conventional water move. The compressor suction temperature is generally higher than 0℃. Below this worth, the water system problem must be excluded.
Extended reading:
Solvent flow meter
Sewage flowmeter
Oil and gasoline 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 include electromagnetic circulate meters, turbine circulate meters and ultrasonic flow meters. Used in condensing systems, chillers or HVAC. there are a number of circulate and energy measurement opportunities in chilled water systems and Apure provides a range of chilled water circulate meter technologies which are particularly well suited to this difficult application. Some considerations for drive know-how selection embody set up requirements, accuracy requirements and upkeep implications. Apure’s insertion turbine and insertion electromagnetic flowmeters are simple to install in new or present methods, provide accurate measurements over a variety of flow regulation, and offer years of trouble-free service in closed-loop hydronic systems.
For pressure gauge ออก หลัง requiring the very best accuracy, similar to price allocation, efficiency contracting or sub-metering, in-line electromagnetic flowmeters may be one of the best answer. But there is no best chilled water move meter, solely essentially the most applicable one. This is because the details of each pipeline software are completely different. According to the precise measurement scenario, select 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 also be extra suitable. Please evaluation the meters beneath or be at liberty 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 set up flow meter in chilled water?
In order to ensure the accurate measurement of chilled water circulate meter, the set up place and technique have to be accurately selected
Requirements for straight pipe part: it have to be put in 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 path must be constant. The size of the upstream pipe ought to be a minimal of 2D straight pipe part. If the installation website permits, it is suggested that the upstream straight pipe section be 20D and the downstream pipe part be 5D.
Requirements for piping: The inside diameter of the upstream and downstream piping of the set up point is similar as that of the flowmeter.
Requirements on by-pass pipe: In order to ensure that the maintenance of the flowmeter doesn’t affect the conventional use of the medium, the cut-off valve (cut-off valve) ought to be installed 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 circulate meter, the upstream installed cut-off valve must be totally open when in use, to avoid the upstream a part of the fluid produced unstable flow phenomenon.
The necessities of the external surroundings: it is best to put in in the indoor, have to be installed in the out of doors, should use sunscreen, rain. Lightning safety measures, in order to not have an effect on service life.
Requirements for impurities within the medium: In order to make sure the service lifetime of the flowmeter, the filter must be put in in entrance of the straight pipe section of the flowmeter.
Installation web site: The flowmeter should be installed in a spot that’s easy to hold 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 information.
The electrical insulation of the electromagnetic flowmeter transmitter.
Can ultrasonic circulate meters measure chilled water flow?
Ultrasonic flowmeter can measure the circulate price. The temperature mustn’t exceed -40℃~160℃. Requires a whole test tube and uniform medium. It can display instantaneous move rate, move rate, cumulative move fee and cumulative operating time.
Ultrasonic calorimeter can measure warmth provide, circulate fee and temperature monitoring. Air conditioning heating and cooling capability measurement.
How to measure the chilled water flow fee of a chiller??
The following is our experience sharing: chiller chilled water move measurement method. We hope it goes to be helpful to you.
1. Chiller into and out of the water stress detection of water pipes
By detecting the return water strain and outlet water pressure values. Check the water flow fee of the chiller under the inlet and outlet water stress distinction in the random handbook of the chiller.
Refer to the corresponding unit water flow fee table or chart within the manual. Thus, determine whether or not the refrigeration system is regular or not.
And by this distinction to determine which section of the transmission pipe resistance worth is larger. And develop the corresponding rectification plan and action.
2. Test the refrigerator return water temperature and water temperature (the unit needs to be in normal condition)
After half-hour of power on, examine the system or chilled water system inlet and outlet thermometer via the unit control system parameters.
The inlet water temperature and outlet water temperature can be learn when the unit is operating. The difference have to be about 4-6 degrees.
If the difference between the inlet and outlet water temperatures is simply too massive, the water system is flowing too little water via the plates. This may trigger the equipment to fail to operate correctly or be damaged.
3. Pump working present detection
By detecting the operating present of the refrigerator water pump, and the rated present for comparability. You can determine whether the actual water circulate is bigger than or lower than the rated water circulate of the pump.
Combined with the earlier parameters complete judgment. In order to get an correct chiller system take a look at 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 lower than 0 levels. It means that the water circulate within the water side warmth exchanger is not enough, which causes the evaporation temperature and evaporation strain to drop.
and causes Freon to still evaporate and take in warmth from the suction tube flowing from the evaporator to the compressor. It will lead to the compressor suction temperature under 0 degrees.
In addition, it is necessary to remove the drop of evaporating stress and evaporating temperature attributable to low water temperature setting worth.
Non-standard low water temperature unit can be thought-about regular so long as the compressor suction superheat degree is 6-8 degrees Celsius.
So beneath the traditional water flow. The compressor suction temperature is generally greater than 0℃. Below this worth, the water system downside must be excluded.
Extended reading:
Solvent circulate meter
Sewage flowmeter
Oil and fuel circulate meter
Relation between move and straine