How can reverse flow be avoided?
What will be an ideal response?
To avoid reverse flow you should keep your equipment must in good condition, never use an oxygen cylinder with less than 50 psig in it, always independently bleed his hoses before lighting the torch, and never light both gases at once.
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A heat pump is to deliver 59 kW of heat to a warm space, while using 15 kW of power. Determine the coefficient of performance of the heat pump.
Given: Q?H = ?59 kW; W? = ?15 kW What will be an ideal response?
Geophysicists concerned with water are called hydrologists
Indicate whether the statement is true or false
In accordance with the general principle of measuring net quantities, excavation and backfill quantities are calculated using "____."
A. depth measure B. composite measure C. bank measure D. hold measure
A condensing gas furnace uses ____ from a condensing type heat exchanger to increase the furnace efficiency.
A. sensible heat B. latent heat C. superheat D. subcooling