Podcast
Questions and Answers
What is the fundamental difference between a hot oil system and a hot water heating system?
What is the fundamental difference between a hot oil system and a hot water heating system?
- The type of heat source employed
- The operating pressure of the system
- The heat transfer efficiency
- The boiling point of the fluid used (correct)
Why are heat transfer fluids (HTF), especially hot oils, preferred in high temperature process applications?
Why are heat transfer fluids (HTF), especially hot oils, preferred in high temperature process applications?
- Because of their rapid heat dissipation ability
- Because they require high pressures to operate effectively
- As they exhibit much lower vapor pressure than steam (correct)
- Due to their low energy efficiency
What was a significant drawback of the original oils used as heat transfer fluids?
What was a significant drawback of the original oils used as heat transfer fluids?
- Incompatibility with metal working applications
- Stability issues at temperatures beyond rated levels (correct)
- Poor energy efficiency
- High vapor pressure
Why are hot oil systems often registered at lower levels than equivalent steam systems under jurisdictional regulations?
Why are hot oil systems often registered at lower levels than equivalent steam systems under jurisdictional regulations?
What component is responsible for creating and maintaining the required circulation in a hot oil system?
What component is responsible for creating and maintaining the required circulation in a hot oil system?
In what applications are heat transfer fluids, especially hot oils, widely used?
In what applications are heat transfer fluids, especially hot oils, widely used?
Why should the pump be located below the expansion tank?
Why should the pump be located below the expansion tank?
Why are centrifugal pumps preferred over gear pumps in liquid thermal systems?
Why are centrifugal pumps preferred over gear pumps in liquid thermal systems?
What is a common method of cooling the circulating pumps in thermal systems?
What is a common method of cooling the circulating pumps in thermal systems?
Which equipment is central to the return system in thermal plants?
Which equipment is central to the return system in thermal plants?
What are some auxiliary equipment typically found in thermal systems?
What are some auxiliary equipment typically found in thermal systems?
What is the main advantage of using a heat transfer fluid system over steam?
What is the main advantage of using a heat transfer fluid system over steam?
Why is the choice of heat transfer fluid (HTF) crucial for a high process temperature vapor system?
Why is the choice of heat transfer fluid (HTF) crucial for a high process temperature vapor system?
What is the main function of the expansion tank in a heat transfer fluid system?
What is the main function of the expansion tank in a heat transfer fluid system?
What is the main difference between a vapour phase heat transfer system and a liquid thermal system?
What is the main difference between a vapour phase heat transfer system and a liquid thermal system?
What may cause blockage of pipes and valves in heat transfer fluid systems?
What may cause blockage of pipes and valves in heat transfer fluid systems?
Why are liquid thermal systems preferred to use centrifugal pumps over gear pumps?
Why are liquid thermal systems preferred to use centrifugal pumps over gear pumps?
Which type of pump is the most preferable in liquid thermal systems due to the availability of higher flow rates?
Which type of pump is the most preferable in liquid thermal systems due to the availability of higher flow rates?
What is the main reason for incorporating an expansion tank in a heat transfer fluid system?
What is the main reason for incorporating an expansion tank in a heat transfer fluid system?
What is the main difference between radiant and convection heaters used in heat transfer fluid systems?
What is the main difference between radiant and convection heaters used in heat transfer fluid systems?
Why is it crucial to clean the system thoroughly before recharging it with fresh heat transfer fluid?
Why is it crucial to clean the system thoroughly before recharging it with fresh heat transfer fluid?
What type of potential hazards are associated with heat transfer fluid systems?
What type of potential hazards are associated with heat transfer fluid systems?
What is the primary function of an expansion tank in a liquid thermal system?
What is the primary function of an expansion tank in a liquid thermal system?
Why are fired heaters typically lined with refractory brick and insulating material?
Why are fired heaters typically lined with refractory brick and insulating material?
What is the main advantage of using a combination radiant and convection heater in heat transfer fluid systems?
What is the main advantage of using a combination radiant and convection heater in heat transfer fluid systems?
Why does leaked hot oil pose a serious hazard in heat transfer fluid systems?
Why does leaked hot oil pose a serious hazard in heat transfer fluid systems?
'Exposed piping systems are extremely hot' represents what type of hazard?
'Exposed piping systems are extremely hot' represents what type of hazard?
'Liquid thermal systems consist of a pump, fired heater, and expansion tank' highlights what key component?
'Liquid thermal systems consist of a pump, fired heater, and expansion tank' highlights what key component?
What is the purpose of an expansion tank in a hot oil system?
What is the purpose of an expansion tank in a hot oil system?
Why are multiple burners in a heater not required to all be lit?
Why are multiple burners in a heater not required to all be lit?
What is the purpose of a burner flame failure device in a hot oil system?
What is the purpose of a burner flame failure device in a hot oil system?
Why is a low hot oil flow indicating device essential in a hot oil system?
Why is a low hot oil flow indicating device essential in a hot oil system?
What does a high stack temperature indicator in a hot oil system signify?
What does a high stack temperature indicator in a hot oil system signify?
What function does an emergency shutdown device serve in a hot oil system?
What function does an emergency shutdown device serve in a hot oil system?
Why are two hot oil pumps usually installed in a hot oil system?
Why are two hot oil pumps usually installed in a hot oil system?
What role does a pressure/safety relief valve play in a hot oil system?
What role does a pressure/safety relief valve play in a hot oil system?
'Allowing a small amount of hot oil to flow backwards through the pump via a small bypass line' is recommended for what purpose in a hot oil system?
'Allowing a small amount of hot oil to flow backwards through the pump via a small bypass line' is recommended for what purpose in a hot oil system?
What is one reason why an expansion tank should be monitored daily in a hot oil system?
What is one reason why an expansion tank should be monitored daily in a hot oil system?
