What is the ratio between the capital investment and running costs of a temperature control system?
Which component is often ‘the weakest link’ in centrifugal pumps?
How high is the suction lift of the self-priming CM pump?
Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
Which load profile will benefit the most from a demand driven control system?
What is the expected payback time of an investment in system optimisation?
How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
Why is ammonia an efficient coolant?
Test results
Congratulations. You have passed the test and completed the 29 - Introduction to temperature control
Achieved badges:
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
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: Shaft seal
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: O-rings
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: Flange
Q: How high is the suction lift of the self-priming CM pump?
A: Up to 5 metres
Q: How high is the suction lift of the self-priming CM pump?
A: Up to 8 metres
Q: How high is the suction lift of the self-priming CM pump?
A: Up to 10 metres
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: 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 expected payback time of an investment in system optimisation?
A: 1-12 months
Q: What is the expected payback time of an investment in system optimisation?
A: 1-5 years
Q: What is the expected payback time of an investment in system optimisation?
A: System optimization is rarely economical valuable but should be done due to environmental concerns
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: 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.