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Why does a cooling system using propylene glycol require pumps with oversized motors?

Question 2 of 5
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Which of the following isn’t one of the main benefits of the CM pump range?

Question 3 of 5
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What percentage of energy savings can a temperature-controlled, demand-driven system deliver?

Question 4 of 5
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What is the expected payback time of an investment in system optimisation?

Question 5 of 5
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What method does Grundfos recommend to control the transference of energy in a heating, cooling, or refrigeration system?

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1: Why does a cooling system using propylene glycol require pumps with oversized motors?
Because the viscosity and density of propylene glycol is higher than tap water.
1: Why does a cooling system using propylene glycol require pumps with oversized motors?
Because the viscosity and density of propylene glycol is lower than tap water.
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1: Why does a cooling system using propylene glycol require pumps with oversized motors?
Because propylene glycol has a lower specific heat capacity and therefore requires a higher flow.
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2: Which of the following isn’t one of the main benefits of the CM pump range?
Reliability
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2: Which of the following isn’t one of the main benefits of the CM pump range?
Global usage
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2: Which of the following isn’t one of the main benefits of the CM pump range?
External control
3: What percentage of energy savings can a temperature-controlled, demand-driven system deliver?
12%
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3: What percentage of energy savings can a temperature-controlled, demand-driven system deliver?
30%
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3: What percentage of energy savings can a temperature-controlled, demand-driven system deliver?
36%
4: What is the expected payback time of an investment in system optimisation?
1-12 months
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4: What is the expected payback time of an investment in system optimisation?
1-5 years
4: What is the expected payback time of an investment in system optimisation?
System optimization is rarely economical valuable but should be done due to environmental concerns.
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5: What method does Grundfos recommend to control the transference of energy in a heating, cooling, or refrigeration system?
Using constant-speed pumps with throttling valves to regulate the amount of water entering the heat exchanger.ng the heat exchanger.
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5: What method does Grundfos recommend to control the transference of energy in a heating, cooling, or refrigeration system?
Installing intelligent pumps equipped with temperature sensors that measure the outlet temperature so the pump can adjust its flow accordingly.r.
5: What method does Grundfos recommend to control the transference of energy in a heating, cooling, or refrigeration system?
Adding a frequency converter and a sensor that monitors and regulates the differential pressure.
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