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What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?

Question 2 of 8
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How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?

Question 3 of 8
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Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?

Question 4 of 8
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Why is ammonia an efficient coolant?

Question 5 of 8
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Which load profile will benefit the most from a demand driven control system?

Question 6 of 8
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What is the ratio between the capital investment and running costs of a temperature control system?

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

Question 8 of 8
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How have temperature control systems traditionally been regulated?

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1: What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
Intelligent three way valves controlling the amount of water to the pump and heat exchanger accordingly.
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1: What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
Intelligent pumps equipped with temperature sensors that measure the outlet temperature and signal the pump to regulate its flow accordingly – without the use of valves.
1: What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
Thermos element three way valves controlling the amount of water to the heat exchangers.
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2: 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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2: 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.
2: 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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3: 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.
3: 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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3: 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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4: Why is ammonia an efficient coolant?
Ammonia is able to absorb large amount of heat when it evaporates.
4: Why is ammonia an efficient coolant?
Ammonia is easy to pump.
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4: Why is ammonia an efficient coolant?
Ammonia is a natural coolant with zero ozone depletion.
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5: Which load profile will benefit the most from a demand driven control system?
Low flow rate with relatively few peak periods during the day.
5: Which load profile will benefit the most from a demand driven control system?
High flow rate with relatively few low flow periods during the day.
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5: Which load profile will benefit the most from a demand driven control system?
Varying flow rate with relatively often periods with full flow and no flow.
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6: What is the ratio between the capital investment and running costs of a temperature control system?
20:1
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6: What is the ratio between the capital investment and running costs of a temperature control system?
1:1
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6: What is the ratio between the capital investment and running costs of a temperature control system?
1:20
7: Which of the following isn’t one of the main benefits of the CM pump range?
Reliability
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7: Which of the following isn’t one of the main benefits of the CM pump range?
Global usage
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7: Which of the following isn’t one of the main benefits of the CM pump range?
External control
8: How have temperature control systems traditionally been regulated?
Constant speed pumps and throttling valves regulating the amount of water entering the heat exchanger.
8: How have temperature control systems traditionally been regulated?
Constant pressure valves regulating the amount of water entering the heat exchanger.
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8: How have temperature control systems traditionally been regulated?
Three way valves controlling the amount of water entering the pump.
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