8 questions Advanced

ECADEMY test

29 - Introduction to temperature control

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Question 2 of 8 Advanced

2 Which component is often ‘the weakest link’ in centrifugal pumps?

Question 5 of 8 Advanced

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

Question 6 of 8 Advanced

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

Question 8 of 8 Advanced

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Correct
01.
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.
Correct
02.
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: Shaft seal
Correct
03.
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.
Correct
04.
Q: Why is ammonia an efficient coolant?
A: Ammonia is able to absorb large amount of heat when it evaporates.
Correct
05.
Q: What is the ratio between the capital investment and running costs of a temperature control system?
A: 1:20
Correct
06.
Q: What is the expected payback time of an investment in system optimisation?
A: 1-5 years
Correct
07.
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.
Correct
08.
Q: Which temperature control systems hold the greatest potential for optimisation?
A: Three way valve Regulated temperature control systems that adapts operation according to the load.