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In temperature control, how much higher are running costs compared to capital investment?

Question 2 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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How high is the suction lift of the self-priming CM pump?

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

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

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1: In temperature control, how much higher are running costs compared to capital investment?
20:1
1: In temperature control, how much higher are running costs compared to capital investment?
By a factor of 100 to 1.
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1: In temperature control, how much higher are running costs compared to capital investment?
By a factor of 50 to 1.
You can find the answer here >
2: 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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2: 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.
2: 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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3: How high is the suction lift of the self-priming CM pump?
Up to 5 metres
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3: How high is the suction lift of the self-priming CM pump?
Up to 8 metres
3: How high is the suction lift of the self-priming CM pump?
Up to 10 metres
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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: 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.
5: 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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5: 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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