The cooling capacity of screw chillers ranges from 92880Kcal/h to 744760Kcal/h, and the compressor power can range from 8KW to 1280kw. It can be widely used in various industries with a particularly large cooling capacity. There are 14 models to choose from. So what should we start with when choosing a screw chiller? Lets come look:
1. The selection of screw chillers should be based on the cold load and what to use. For refrigeration systems with long operating conditions with low load operation, it is suitable to select multi-head piston compressor units or screw compressor units for easy conditioning and energy saving. This is the double-head screw chiller that we often say. The change of the load, the chiller automatically determines the number of power-on, to ensure that the open compressor is in good working condition, thus saving energy.
2. The screw type chiller is selected, and the unit with higher coefficient of performance value is given priority. According to previous statistics, the normal chiller operating time under 100% load is about 1/4 of the running time. The operating time ratios of 100%, 75%, 50%, and 25% load in the sub-run time are approximately 2.3%, 41.5%, 46.1%, and 10.1%. Therefore, when selecting a chiller, priority should be given to the chiller model with a flatter efficiency curve. At the same time, the adjustment range of the chiller load should be considered in the design selection. The multi-head screw chiller has excellent partial load performance, and the screw chiller can be selected according to the actual situation of the factory.
3. When using a screw chiller, you should pay attention to the conditions of the nominal working condition. The actual cooling capacity of the chiller is related to the following two points:
a, cold water outlet temperature and flow;
b. Inlet water temperature, flow rate and fouling coefficient of cooling water.
4. When selecting a screw chiller , attention should be paid to the normal working range of the screw chiller of this type, mainly because the current limit of the motor is the current value of the shaft power under surface conditions.
5. When designing the screw chiller, it should be noted that under the nominal working condition, the outlet temperature of cold water should not exceed 15 °C, and the outdoor dry bulb temperature of the air-cooled unit should not exceed 43 °C. If it is necessary to pass the above categories, it is sufficient to understand whether the power of the motor is sufficient if the scope of use of the compressor is acceptable.
Features
10.1 inch high resolution color TFT display
Lightweight and portable design suitable for Ambulance,Emergency Transport
Three Working Modes : Monitoring , Surgery and Diagnosis.
Simple and friendly operating display interface.
Multi-display modes suitable for different applications: Standard Interface , Large font , ECG Standard Full Display ,OXY, Trend able BP Trend.
Built-in high capacity battery up to 3 hours of continuous work
Technique Specification
ECG
Lead Mode : 5 Leads ( I , ll , Ill , AVR , AVL , AVF , V )
Gain : 2.5mm / mV, 5.0mm /mV , 10mm /Mv, 20mm /mV
Heart Rate : 15-300 BPM ( Adult ) ; 15-350 BPM ( Neonatal )
Resolution : 1 BPM
Accuracy : ± 1%
Sensitivity > 200 uV ( Peak to peak )
ST measurement range : -2.0 ~+ 2.0 Mv
Accuracy : -0. 8mV~+ 0. 8mV : ± 0. 02mV or ± 10% , which is greater
Other Range : unspecified
Sweep speed : 12.5 mm / s , 25mm / s , 50mm / s
Bandwidth:
Diagnostic : 0.05~130 Hz
Monitor : 0.5~40 Hz
Surgery : 1~20 Hz
SPO2
Measuring Range : 0 ~ 100%
Resolution : 1%
Accuracy : 70%~100% ( ± 2 % )
Pulse Rate : 20-250 BPM
Resolution : 1 BPM
Accuracy : ± 3 BPM
Optinal Parameters :
Central monitoring system
Dual IBP
Etco 2
12-lead ECG
Nellcor SpO2
Sun Tech NIBP
NIBP
Method : Oscillometry
Measure mode Manual, Auto, STAT
Unit : mmHg , kPa
Measure and alarm range:
Adult Mode
SYS 40 ~ 280 mmHg
DIA 10 ~ 225 mmHg
MEAN 20 ~ 240 mmHg
Pediatric Mode
SYS 40 ~ 220 mmHg
DIA 10 ~ 160 mmHg
MEAN 20 ~ 170 mmHg
Neonatal Mode
SYS 40 ~ 135 mmHg
DIA 10 ~ 100 mmHg
MEAN 20 ~ 110 mmHg
Resolution : 1 mmHg
Accuracy : ± 5 mmHg
TEMP
Measure and Alarm Range : 0 ~ 50 C
Resolution : 0 . 1C
Accuracy : ± 0 . 1C
Standard Parameters
ECG, RESP, TEMP, NIBP, SPO2, PR
RESP
Method : Impedance between RA-LL or RALA
Measurement Range:
Adult : 10~120 BrPM
Neonatal / Pediatric : 7~150 BrPM
Resolution : 1 BrPM
Accuracy : ± 2 BrPM
Standard Configuration
No Item Qty
- 1 Main Unit 1
- 2 5-lead ECG cable 1
- 3 Disposable ECG Electrode 5
- 4 Adult Spo2 probe 1
- 5 Adult NIBP cuff 1
- 6 NIBP extension tube 1
- 7 Temperature probe 1
- 8 Power Cable 1
- 9 User Manual 1
- 10 Fuse 3
Patient Monitor,Portable Patlent Monltor,Patlent Monltor For Adult,Patlent Monltor For Baby
Guangzhou Sonostar Technologies Co., Limited , https://www.sonoeye.com