1
How have temperature control systems traditionally been regulated?
2
Which load profile will benefit the most from a demand driven control system?
3
What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
4
How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
5
Which of the following isn’t one of the main benefits of the CM pump range?
6
Why is ammonia an efficient coolant?
7
Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
Test results
Congratulations. You have passed the test and completed the 29 - Introduction to temperature control
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Q: How have temperature control systems traditionally been regulated?
A: Constant speed pumps and throttling valves regulating the amount of water entering the heat exchanger.
Q: How have temperature control systems traditionally been regulated?
A: Constant pressure valves regulating the amount of water entering the heat exchanger.
Q: How have temperature control systems traditionally been regulated?
A: Three way valves controlling the amount of water entering the pump.
Q: Which load profile will benefit the most from a demand driven control system?
A: Low flow rate with relatively few peak periods during the day.
Q: Which load profile will benefit the most from a demand driven control system?
A: High flow rate with relatively few low flow periods during the day.
Q: Which load profile will benefit the most from a demand driven control system?
A: Varying flow rate with relatively often periods with full flow and no flow.
Q: What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
A: Intelligent three way valves controlling the amount of water to the pump and heat exchanger accordingly.
Q: What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
A: 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.
Q: What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
A: Thermos element three way valves controlling the amount of water to the heat exchangers.
Q: How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
A: Equip the pump with external cooling.
Q: How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
A: Equip the pump with double-shaft seals or air-cooled top.
Q: How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
A: Isolating the pump and install heat tracing.
Q: Which of the following isn’t one of the main benefits of the CM pump range?
A: Reliability
Q: Which of the following isn’t one of the main benefits of the CM pump range?
A: Global usage
Q: Which of the following isn’t one of the main benefits of the CM pump range?
A: External control
Q: Why is ammonia an efficient coolant?
A: Ammonia is able to absorb large amount of heat when it evaporates.
Q: Why is ammonia an efficient coolant?
A: Ammonia is easy to pump.
Q: Why is ammonia an efficient coolant?
A: Ammonia is a natural coolant with zero ozone depletion.
Q: Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
A: The viscosity and density of propylene glycol is higher than tap water.
Q: Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
A: The viscosity and density of propylene glycol is lower than tap water.
Q: Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
A: Propylene glycol has a lower specific heat capacity and therefor requires a higher flow.
Q: What is the ratio between the capital investment and running costs of a temperature control system?
A: 20:1
Q: What is the ratio between the capital investment and running costs of a temperature control system?
A: 1:1
Q: What is the ratio between the capital investment and running costs of a temperature control system?
A: 1:20