Kysymys 1 näistä 8
Edistyneille
How have temperature control systems traditionally been regulated?
Kysymys 2 näistä 8
Edistyneille
How high is the suction lift of the self-priming CM pump?
Kysymys 3 näistä 8
Edistyneille
Why is ammonia an efficient coolant?
Kysymys 4 näistä 8
Edistyneille
What is the ratio between the capital investment and running costs of a temperature control system?
Kysymys 5 näistä 8
Edistyneille
Which of the following isn’t one of the main benefits of the CM pump range?
Kysymys 6 näistä 8
Edistyneille
How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
Kysymys 7 näistä 8
Edistyneille
What is the expected payback time of an investment in system optimisation?
Kysymys 8 näistä 8
Edistyneille
Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
Kysymys 8 näistä 8
Edistyneille
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Onneksi olkoon. Olet läpäissyt testin ja suorittanut 29 - Introduction to temperature control
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1: How have temperature control systems traditionally been regulated?
Constant speed pumps and throttling valves regulating the amount of water entering the heat exchanger.
1: How have temperature control systems traditionally been regulated?
Constant pressure valves regulating the amount of water entering the heat exchanger.
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1: How have temperature control systems traditionally been regulated?
Three way valves controlling the amount of water entering the pump.
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2: How high is the suction lift of the self-priming CM pump?
Up to 5 metres
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2: How high is the suction lift of the self-priming CM pump?
Up to 8 metres
2: How high is the suction lift of the self-priming CM pump?
Up to 10 metres
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3: Why is ammonia an efficient coolant?
Ammonia is able to absorb large amount of heat when it evaporates.
3: Why is ammonia an efficient coolant?
Ammonia is easy to pump.
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3: Why is ammonia an efficient coolant?
Ammonia is a natural coolant with zero ozone depletion.
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4: What is the ratio between the capital investment and running costs of a temperature control system?
4: What is the ratio between the capital investment and running costs of a temperature control system?
4: What is the ratio between the capital investment and running costs of a temperature control system?
1:20
5: Which of the following isn’t one of the main benefits of the CM pump range?
Reliability
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5: Which of the following isn’t one of the main benefits of the CM pump range?
Global usage
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5: Which of the following isn’t one of the main benefits of the CM pump range?
External control
6: How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
Equip the pump with external cooling.
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6: How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
Equip the pump with double-shaft seals or air-cooled top.
6: How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
Isolating the pump and install heat tracing.
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7: What is the expected payback time of an investment in system optimisation?
1-12 months
7: What is the expected payback time of an investment in system optimisation?
1-5 years
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7: 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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8: Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
The viscosity and density of propylene glycol is higher than tap water.
8: Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
The viscosity and density of propylene glycol is lower than tap water.
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8: Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
Propylene glycol has a lower specific heat capacity and therefor requires a higher flow.
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