1
What is the expected payback time of an investment in system optimisation?
2
Which load profile will benefit the most from a demand driven control system?
3
How have temperature control systems traditionally been regulated?
4
Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
5
Which component is often ‘the weakest link’ in centrifugal pumps?
6
Which temperature control systems hold the greatest potential for optimisation?
7
What is the ratio between the capital investment and running costs of a temperature control system?
8
What is the most efficient and simple way of controlling heating, cooling and refrigeration systems?
Test results
Congratulations. You have passed the test and completed the 29 - Introduction to temperature control
Achieved badges:
01.
Q: What is the expected payback time of an investment in system optimisation?
A: 1-12 months
01.
Q: What is the expected payback time of an investment in system optimisation?
A: 1-5 years
01.
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
02.
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.
02.
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.
02.
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.
03.
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.
03.
Q: How have temperature control systems traditionally been regulated?
A: Constant pressure valves regulating the amount of water entering the heat exchanger.
03.
Q: How have temperature control systems traditionally been regulated?
A: Three way valves controlling the amount of water entering the pump.
04.
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.
04.
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.
04.
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.
05.
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: Shaft seal
05.
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: O-rings
05.
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: Flange
06.
Q: Which temperature control systems hold the greatest potential for optimisation?
A: Temperature controlled pump in single circulation systems.
06.
Q: Which temperature control systems hold the greatest potential for optimisation?
A: Unregulated temperature control systems that do not adapt operation according to the load.
06.
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.
07.
Q: What is the ratio between the capital investment and running costs of a temperature control system?
A: 20:1
07.
Q: What is the ratio between the capital investment and running costs of a temperature control system?
A: 1:1
07.
Q: What is the ratio between the capital investment and running costs of a temperature control system?
A: 1:20
08.
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.
08.
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.
08.
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.